| 单词 | convergent |
| 例句 | A divergent thinker can come up with many different answers to a question, while a convergent thinker will come up with the one correct answer to a problem. Music and the Child 2016-06-14T00:00:00Z There may be some convergent evolution because there may be only one best solution to a certain environmental problem— something like two eyes, for example, for binocular vision at optical frequencies. Cosmos 1980-01-01T00:00:00Z They are—after all this time, from Zundert to now, through all their ups and downs, their divergent and convergent paths—bound together, brothers, friends. Vincent and Theo: The Van Gogh Brothers 2017-04-18T00:00:00Z With a whoop of delighted excitement the line broke; there was a convergent stampede towards that magnetic centre of attraction. Brave New World 1932-01-01T00:00:00Z When rocket propellant burned, it first produced a river of gas that flowed into the convergent section of the nozzle. October Sky 1999-04-01T00:00:00Z But when policies are more about means than ends – and mainstream ideology is basically convergent on the managerial centre – it's bound to happen. Have the leaders' debates changed British politics for good? Maybe 2010-04-23T09:13:00Z The appearance of similar characteristics in creatures that are not closely related, like the wings of birds, bats and the extinct flying reptiles called pterosaurs, is called convergent evolution. Hard-headed: prehistoric Texas reptile boasted bony domed skull 2016-09-22T04:00:00Z It may originate in a sort of erotic consecration, but love and pain, joy and punishment, seem increasingly convergent, at least in the ways that people express themselves online. Love, Death, and Begging for Celebrities to Kill You 2019-06-21T04:00:00Z Sure, there is some daunting talk of string theory and convergent series and the cosine of half pi Z, not to mention the varieties of infinity. | 'A Disappearing Number': Simon McBurney?s Play at Lincoln Center Festival 2010-07-16T22:29:00Z The world — or at least the people in it — become oddly convergent. In-work dining at Silicon Valley companies like Google and Facebook causes spike in divorce rate 2018-06-24T04:00:00Z “The Palace” is attempting to configure America perhaps not as a predestined fact but as a procession of unembellishable convergent realities—lenses over lenses over lenses. Throwing Weight Into Sound: Kaveh Akbar on Poetry and Power 2019-04-19T04:00:00Z As is now common with the aging enfant terrible, many convergent silhouettes were thrown into the couture cauldron - including draped hoods, men’s tuxedos and even silver silk sweat pants. ‘Calm’ Kardashian joins Emma Watson at Valentino 2014-07-09T04:00:00Z Whereas when they engage in very structured dance it helps their convergent thinking – trying to find the single answer to a problem. Peter Lovatt: 'Dancing can change the way you think' 2011-07-30T23:05:56Z They found that the biological changes that allow beetle mimic cockroaches to give birth to live young are similar to those found in aphids and tsetse flies, demonstrating convergent evolution, Benoit said. What do new moms and roaches have in common? 2023-10-20T04:00:00Z The aim was to “envision what kind of digital society we will have in the future,” to produce, “convergent policy.” Seoul maps road ahead for South Korea’s — and the world’s — tech future 2023-10-06T04:00:00Z "The snout of Hupehsuchus is highly convergent with modern baleen whales," the study concludes. Ancient filter-feeding reptile had a freaky similarity with modern whales 2023-08-09T04:00:00Z Carcinization is an example of a phenomenon called convergent evolution, which is when different groups independently evolve the same traits. Why Do Animals Keep Evolving into Crabs? 2023-06-01T04:00:00Z This phenomenon is called convergent evolution, where similar traits evolve independently in species that do not share a recent common ancestry. Fundamentals of Biology 2015-01-01T00:00:00Z When similar structures arise through evolution independently in different species it is called convergent evolution. Concepts of Biology 2013-04-25T00:00:00Z For instance, turbines built in convergent estuaries—bodies of water that narrow inland—will persist better than those in estuaries that stay the same width upriver. Tidal Power Faces a Fickle Future with Rising Seas 2023-04-19T04:00:00Z This is an example of convergent evolution, in which something functional emerges entirely separately. Mother Nature can't stop evolving eyes 2023-04-16T04:00:00Z “New fossils are showing more and more cases of convergent evolution,” Aureliano says, suggesting that part of what made dinosaurs so successful was this repeated development of key traits. Dinosaurs' Air Sacs Evolved Many Times and Let Them Take Over the World 2023-03-31T04:00:00Z This phenomenon, called convergent evolution, is one reason why protist classification is so challenging. Fundamentals of Biology 2015-01-01T00:00:00Z He added that "there has been convergent negligence by many other factors". Greek train crash station master "devastated", takes some blame 2023-03-02T05:00:00Z With sea level rise, these convergent waterways narrow farther inland, funneling tidal energy through a smaller space. Tidal Power Faces a Fickle Future with Rising Seas 2023-04-19T04:00:00Z "These parallels suggest convergent cognitive evolution most likely related to complex sociality and cooperation." These are the only 8 animals that can recognize themselves in the mirror (besides humans) 2023-02-03T05:00:00Z Despite their different origins, several of the new strains have chanced upon a similar combination of mutations to help scale the wall of immunity—a striking example of convergent evolution. Big COVID-19 waves may be coming, new Omicron strains suggest 2022-09-27T04:00:00Z Evolution may be convergent with similar traits evolving in multiple species or divergent with diverse traits evolving in multiple species that came from a common ancestor. Biology for AP Courses 2022-06-09T00:00:00Z In this case, we call the series convergent. Intermediate Algebra 2020-05-06T00:00:00Z But even convergent estuaries will be, on the whole, worse for tidal power generation in the future. Tidal Power Faces a Fickle Future with Rising Seas 2023-04-19T04:00:00Z This appears to be convergent evolution, Lautenschlager says, where the different species independently evolved away from round eyes. If T. Rex ’s Beady-Eyed Glare Terrifies You, It Should 2022-08-11T04:00:00Z If the integral is not convergent, answer “divergent.” Calculus, Vol 2 2016-03-30T00:00:00Z This phenomenon is called convergent evolution, where similar traits evolve independently in species that do not share a common ancestry. Biology for AP Courses 2022-06-09T00:00:00Z Two important patterns of macroevolution are adaptive radiation and convergent evolution. Miller & Levine Biology 2018-01-01T00:00:00Z At an ocean-continent convergent boundary, the oceanic plate is pushed under the continental plate in the same manner as at an ocean-ocean boundary. Physical Geology 2015-01-01T00:00:00Z This convergent boundary has a trench and mantle wedge and frequently, a volcanic arc. An Introduction to Geology 2017-01-01T00:00:00Z We conclude that ⎨1 − ⎝2⎠ ⎬ is a convergent sequence and its limit is 1. Calculus, Vol 2 2016-03-30T00:00:00Z Which situation is most likely an example of convergent evolution? Biology for AP Courses 2022-06-09T00:00:00Z When unrelated organisms develop similar physical characteristics to adapt to comparable ecological niches, convergent evolution has occurred. Miller & Levine Biology 2018-01-01T00:00:00Z Why does subduction not take place at a continent-continent convergent zone? Physical Geology 2015-01-01T00:00:00Z Unlike subduction-zone earthquakes, which tend to be located along a narrow swath near the convergent boundary, collision-zone earthquakes may occur hundreds of kilometers from the boundary between the plates. An Introduction to Geology 2017-01-01T00:00:00Z If a sequence is bounded and monotone, then it converges, but not all convergent sequences are monotone. Calculus, Vol 2 2016-03-30T00:00:00Z An example of convergent evolution is the development of the same function, swimming, in organisms that live in different parts of the globe, such as Arctic beluga whales and Antarctic right whales. Biology for AP Courses 2022-06-09T00:00:00Z Fascicles can be parallel, circular, convergent, pennate, fusiform, or triangular. Anatomy and Physiology 2013-06-19T00:00:00Z Many of Earth’s major earthquakes and volcanoes are associated with convergent boundaries. Physical Geology 2015-01-01T00:00:00Z Subduction Zones—Subduction zones, found at convergent plate boundaries, are where the largest and deepest earthquakes, called megathrust earthquakes, occur. An Introduction to Geology 2017-01-01T00:00:00Z Here we show that we can do the same thing for convergent power series. Calculus, Vol 2 2016-03-30T00:00:00Z Bioluminescence is an example of convergent evolution; 30 distinct lineages have acquired this characteristic, and all involve some form of a class of molecules called luciferins. Biology for AP Courses 2022-06-09T00:00:00Z When a muscle has a widespread expansion over a sizable area, but then the fascicles come to a single, common attachment point, the muscle is called convergent. Anatomy and Physiology 2013-06-19T00:00:00Z This area is not at a divergent or convergent boundary, and there is no evidence of an underlying mantle plume. Physical Geology 2015-01-01T00:00:00Z Maybe the most significant tectonic feature that occurred in the Cenozoic of North America was the conversion of the west coast of California from a convergent boundary subduction zone to a transform boundary. An Introduction to Geology 2017-01-01T00:00:00Z If the terms of a sequence approach a finite number L as n → ∞, we say that the sequence is a convergent sequence and the real number L is the limit of the sequence. Calculus, Vol 2 2016-03-30T00:00:00Z The independent evolution of the same or a similar biological trait is referred to as convergent evolution. Biology for AP Courses 2022-06-09T00:00:00Z The large muscle on the chest, the pectoralis major, is an example of a convergent muscle because it converges on the greater tubercle of the humerus via a tendon. Anatomy and Physiology 2013-06-19T00:00:00Z Contact metamorphism takes place around magma bodies in the upper part of the crust, which are also most common above convergent boundaries. Physical Geology 2015-01-01T00:00:00Z Thus, as the subduction zone consumed the mid-ocean ridge, the relative movement became transform instead of convergent, which went on to become the San Andreas Fault System. An Introduction to Geology 2017-01-01T00:00:00Z In the previous section, we stated that convergent sequences are bounded. Calculus, Vol 2 2016-03-30T00:00:00Z Give an example of convergent evolution and explain how it supports the theory of evolution by natural selection. Biology for AP Courses 2022-06-09T00:00:00Z The research also showed that convergent evolution — when unrelated species develop characteristics independently — is much more common than previously thought. Classifying animals by anatomy might not be best system, study says 2022-06-11T04:00:00Z Magma is produced at convergent boundaries and rises toward the surface, where it can form magma bodies in the upper part of the crust. Physical Geology 2015-01-01T00:00:00Z Even more amazingly, researchers such as Erich Jarvis of the Rockefeller University have shown that similar neural pathways and molecular mechanisms control vocal learning and production in songbirds and humans, a product of convergent evolution. What Birds Really Listen for in Birdsong (It’s Not What You Think) 2022-05-04T04:00:00Z So anything that we do has to be clean, has to be real, has to be responsible, has to be transparent, has to be convergent with the values of the highest-quality ingredients. How Panera Bread Navigated Covid, the Labor Market, Inflation and More 2022-04-15T04:00:00Z An example of convergent evolution is the development of an ancestral structure, a limb, into two different modern structures, such as a hand and a flipper. Biology for AP Courses 2022-06-09T00:00:00Z But they have genetic changes at many of the same places as the Omicron variant, suggesting a case of convergent evolution. Pandemic signals from the sewer—what virus levels in wastewater tell us 2022-03-08T05:00:00Z At an ocean-continent convergent boundary, part of a plate that is made up of oceanic crust is subducting beneath part of another plate made up of continental crust. Physical Geology 2015-01-01T00:00:00Z “We see our approach and the EU’s approach to the PRC as complementary and increasingly convergent and aligned,” she said, referring to the People’s Republic of China. U.S. and EU hail 'convergent' stances toward China 2021-12-03T05:00:00Z That implies that they had a convergent evolutionary path towards developing intelligence despite having diverged from vertebrates long ago. Scientists peered into an octopus' brain — and were astonished at what they saw 2021-11-23T05:00:00Z Vestigial structures are the result of convergent evolution, so they are good evidence that natural selection act similarly in similar environmental conditions. Biology for AP Courses 2022-06-09T00:00:00Z The move illustrates Orange’s strategy of being able to deliver ‘convergent offers’ in both broadband and mobile to customers in all European countries where it operates and follows a surge in interest in telecoms dealmaking. France's Orange aims to add Belgian fixed line through VOO deal 2021-11-23T05:00:00Z At convergent boundaries magma is formed where water from a subducting plate acts as a flux to lower the melting temperature of the adjacent mantle rock. Physical Geology 2015-01-01T00:00:00Z To this point, Dan Yamins, a computational neuroscientist at Stanford University, who was not involved with the research, remarks, “A sort of convergent evolution has happened between the engineering and the real biological evolution.” The Brain Guesses What Word Comes Ne- 2021-10-26T04:00:00Z Whether this musical overlap between humans and indris is a case of common ancestry or convergent evolution — where our rhythmic abilities evolved independently — remains unclear. Madagascar’s Got Talent: Lemurs That Sing With Rhythm 2021-10-25T04:00:00Z Vestigial structures are the result of convergent evolution, so they are good evidence for an end goal to evolution. Biology for AP Courses 2022-06-09T00:00:00Z Ravignani instead believes similar social pressures molded both indris and humans into singers at different times—an example of convergent evolution. Giant Lemurs Are the First Mammals (Besides Us) Found To Use Rhythm 2021-10-25T04:00:00Z What is the primary mechanism for partial melting at a convergent plate boundary? Physical Geology 2015-01-01T00:00:00Z But what’s special about the seahorse placenta, Foster adds, is that it’s a fascinating example of convergent evolution, in which different species come up with similar biological solutions for the same problem. Male seahorses grow placentas to incubate their young 2021-09-23T04:00:00Z He suspects that the presence of these compounds in Massospora species represents an example of convergent evolution, in which a feature independently evolves in different species to perform a similar function. How This Zombie Fungus Turns Cicadas into Horror-Movie Sex Bots 2021-05-27T04:00:00Z Modern species have both convergent and divergent traits. Biology for AP Courses 2022-06-09T00:00:00Z That would mean, they said, that this similar sleep pattern arose independently in the two groups, a phenomenon called “convergent evolution.” Octopus research yields insight into the evolution of sleep 2021-04-02T04:00:00Z This is commonly associated with convergent plate boundaries and the formation of mountain ranges. Physical Geology 2015-01-01T00:00:00Z One pattern we see is called convergent evolution, where the same trait emerges in different independent lineages over time, usually as they adapt to similar environments. The Coronavirus Variants Don't Seem to Be Highly Variable So Far 2021-03-24T04:00:00Z The vast majority of our brain activity proceeds divergently, creating many possible associations and not convergently into just one. Most brain activity is "background noise" — and that's upending our understanding of consciousness 2021-02-20T05:00:00Z The history of life is full of examples of so-called convergent evolution, in which different lineages follow the same path. 7 Virus Variants Found in U.S. Carrying the Same Mutation 2021-02-14T05:00:00Z The work provides a novel example of convergent evolution that “deepens our understanding of this unique system” for delivering venom, says Timothy Jackson, an evolutionary toxinologist at the University of Melbourne. Spitting cobras’ venom evolved to inflict pain 2021-01-21T05:00:00Z As this happens typically at convergent plate boundaries, directed pressures can be strong, and regionally altered rocks are almost always foliated. Physical Geology 2015-01-01T00:00:00Z In the case of SARS-CoV-2, the complete genome sequences of viruses from thousands of patients enable us to look for convergent patterns. The Coronavirus Variants Don't Seem to Be Highly Variable So Far 2021-03-24T04:00:00Z The strong resemblance between the two, the researchers say, is a case of convergent evolution, whereby different species develop similar adaptations—or even appearances—thanks to a similar way of life. Dire Wolves Were Not Really Wolves, New Genetic Clues Reveal 2021-01-13T05:00:00Z Charles Darwin first recognized convergent evolution by studying living animals. 7 Virus Variants Found in U.S. Carrying the Same Mutation 2021-02-14T05:00:00Z “Strong and convergent pressures on our part are therefore necessary to push Lebanese officials to respect their commitments.” France urges international partners to raise pressure on Lebanese politicians 2020-09-23T04:00:00Z Oceanic crustal rock can be metamorphosed near the spreading ridge where it was formed, but most other regional metamorphism takes place in areas where mountain ranges have formed, which are most common at convergent boundaries. Physical Geology 2015-01-01T00:00:00Z These viral adaptations are already rewriting our biology textbooks on convergent evolution; let’s strive to limit new material. The Coronavirus Variants Don't Seem to Be Highly Variable So Far 2021-03-24T04:00:00Z This area coincides with a strong trough of surface low pressure — and convergent, low-level winds. How Thursday’s flood unfolded in the Washington region and why it was so hard to forecast 2020-09-11T04:00:00Z In both regions, and indeed across the country, parallel trade-offs are found in both red and white oaks, and trees with convergent traits from the two lineages tend to grow together. How Oak Trees Evolved to Rule the Forests of the Northern Hemisphere 2020-07-14T04:00:00Z "This is an example of what we call convergent evolution, when distantly related organisms develop similar morphological traits under similar environmental conditions." New Zealand 'monster penguins' had Northern Hemisphere doppelgangers, researchers say 2020-06-30T04:00:00Z The background seismicity at this convergent boundary, and on other similar ones, is predominantly near the upper side of the subducting plate. Physical Geology 2015-01-01T00:00:00Z Spot wasn’t specifically designed to walk like an animal — that’s just convergent evolution Jackowski notes that although Spot’s design was inspired by nature, it was built first and foremost as a robot. Boston Dynamics’ engineers are working from home, and have taken their robots with them 2020-06-11T04:00:00Z The training happened for one reason: The low-level “steering winds” for these convective cells were oriented along the axis of the convergent zone of low pressure. How Thursday’s flood unfolded in the Washington region and why it was so hard to forecast 2020-09-11T04:00:00Z Figure 1 | Processes that control mountain height near convergent tectonic-plate boundaries. Mountain height might be controlled by tectonic force, rather than erosion 2020-06-10T04:00:00Z It’s a case of convergent evolution, just as bats resemble birds and whales resemble fish. Dirt Doesn’t Smell like Dirt 2020-04-19T04:00:00Z Figure 11.12 Schematic diagram of the India-Asia convergent boundary, showing examples of the types of faults along which earthquakes are focussed. Physical Geology 2015-01-01T00:00:00Z If you start trying to create a machine that moves as efficiently as possible from scratch, you end up with some “convergent evolution.” Boston Dynamics’ engineers are working from home, and have taken their robots with them 2020-06-11T04:00:00Z “It's pretty clear that this is an example of convergent evolution, where there was a trade-off,” says Julia Clarke, a paleontologist at the University of Texas at Austin, who was not involved in the studies. Winged “PigeonBot” Flies with Real Feathers 2020-04-10T04:00:00Z Distantly related mammals evolved long life spans through a biological phenomenon known as convergent evolution, a process by which unrelated species independently develop the same trait. A Quest for the Genetic Fountain of Youth 2020-03-26T04:00:00Z The system allows both linear and convergent synthesis — in the latter case, intermediate products are stored and then joined together in the final step. Radial flow system decouples reactions in automated synthesis of organic molecules 2020-03-17T04:00:00Z On this map of the west coast, divergent, convergent, and transform boundaries are shown in different colours. Physical Geology 2015-01-01T00:00:00Z I think, rather, that Kuhnian postmodernism and right-wing postmodernism represent cases of convergent evolution. The Coronavirus and Right-Wing Postmodernism 2020-03-15T04:00:00Z What it does require, however, is a shared strategic analysis of the threat, convergent understandings of national interests and a lot of political will. Europe (and yes, that includes Britain) can still be a superpower | Timothy Garton Ash 2020-03-02T05:00:00Z As species evolved similarly extended life spans via convergent evolution, genes related to long life also underwent convergent evolution in those species. A Quest for the Genetic Fountain of Youth 2020-03-26T04:00:00Z “It’s just a new example of the extreme convergent evolution we find in bioluminescence,” Dr. Widder said. How a Fish Steals Its Ability to Glow 2020-01-08T05:00:00Z There's a bit of obliquely convergent motion along the eastern portion of the southern coast of Cuba, in the Santiago Deformed Belt, but otherwise we're talking left-lateral slip. Cracks in the Caribbean: “The Building Was Shaking Like Paper” 2020-02-01T05:00:00Z However, the Times reported one type of ladybug, called the convergent lady beetle, migrates to higher elevations in the early summer to find food, according to the University of California Integrated Pest Management Program. What looks like a massive storm system on National Weather Service radar is actually a lot of ladybugs 2019-06-05T04:00:00Z California is home to about 200 species of ladybugs, including the convergent lady beetle, according to the University of California Integrated Pest Management Program. High-flying ladybug swarm shows up on National Weather Service radar 2019-06-05T04:00:00Z "These remarkable findings offer supporting evidence for the contention regarding the nature of convergent evolution through molecular resemblance, in which similarities in genetic variants between adapted species are present." Woolly mammoth mystery solved? Study reveals shocking details about prehistoric creature 2019-04-09T04:00:00Z This would be an example of convergent evolution, which is when two unrelated organisms independently develop similar features because of the evolutionary pressures of their environments. And You Thought the Platypus Was Odd 2019-01-24T05:00:00Z This is an example of a phenomenon called convergent evolution in which unrelated organisms acquire similar characteristics in adapting to similar environments, often separated by many millions of years, Motani said. Odd duckbilled sea reptile thrived after ancient global calamity 2019-01-24T05:00:00Z By looking at specifics in the genetic changes of parrots and humans, researchers in the future may develop a better understanding of the powers of convergent evolution. The Genes That Make Parrots Into the Humans of the Bird World 2018-12-07T05:00:00Z Their similar appearance suggests that ichthyosaurs and whales evolved similar strategies to adapt to marine life - an example of convergent evolution. Fossil preserves 'sea monster' blubber 2018-12-05T05:00:00Z Birds, which do show a similar hip anatomy, are actually saurischian dinosaurs that independently evolved a convergent hip shape. The Secret to Dinosaur Hip Shape 2018-10-20T04:00:00Z Piranhamesodon is an example of a phenomenon called convergent evolution in which organisms independently acquire similar characteristics as a result of adapting to similar ecological niches or environments. In toothy prequel, piranha-like fish menaced Jurassic seas 2018-10-18T04:00:00Z “Performance was significantly higher” on tests of convergent and divergent thinking, said psychologist Bernhard Hommel of Leiden University in the Netherlands, who led the study. Scientists Are Starting to Test Claims About "Microdosing" 2018-08-24T04:00:00Z There are well-respected scientists who predict that life will be extremely similar and be humanoid, and they base that on the idea of convergent evolution, but I disagree. A biologist explores a big question in evolution: does it happen the same way each time? 2018-08-02T04:00:00Z “If we move away from this, you’re talking about rebasing everything, redoing the registrations. It’s sound, it’s robust, it’s taken years to agree, let’s stay convergent with it.” Chemical companies fear toxic consequences of Brexit 2018-03-23T04:00:00Z He said it was one of the most apparent cases of convergent evolution, where two unrelated organisms evolve to look or function alike because of the similar niches they fill in their environments. A 3-D Look Inside the Tasmanian Tiger’s Pouch, Long After Extinction 2018-02-23T05:00:00Z “The new fish is a most interesting example of convergent evolution, evolving - for bony fish then - a completely new way of life,” Kölbl-Ebert said. In toothy prequel, piranha-like fish menaced Jurassic seas 2018-10-18T04:00:00Z That suggested an improvement in the convergent thinking element of creativity. Scientists Are Starting to Test Claims About "Microdosing" 2018-08-24T04:00:00Z If that’s the case, then the striking similarities between dinoflagellate and all other nematocysts are simply a colossal coincidence -- and yet another example of the wildly common phenomenon of convergent evolution. Marine Microbes Exchange Fire With Elaborate Subcellular Weapons [Video] 2018-02-11T05:00:00Z Hear, hear: the convergent evolution of echolocation in bats? Fossil Bat Stories, Part 1 2018-02-10T05:00:00Z I always liked the idea that milvine kites and sea eagles might be close kin, in which case any similarity between sea eagles and aquiline eagles is convergent. Raptors Once More (Raptors, Part 2) 2018-01-21T05:00:00Z To test for such convergent evolution, Feigin and Pask’s team identified 81 protein-coding genes in which both canids and thylacines had acquired similar DNA changes, including some with roles in skull development. Tasmanian tiger genome offers clues to its extinction He called it an exceptional example of convergent evolution - where species which are not closely related evolve to look similar. Tasmanian tiger genes 'were in poor health' 2017-12-11T05:00:00Z Alesi either represents a more ancient condition inherited by the gibbons or a case of convergent evolution as early apes were getting their feet under them. Meet Alesi, the Prehistoric Infant Ape 2017-10-01T04:00:00Z “It's a really good example of convergent evolution,” Larabee said, “where different body parts are being used to do the same function in these different groups.” How these insects bite 700 times faster than you can blink 2017-08-31T04:00:00Z "They used really cutting-edge techniques to study a beautiful example of convergent evolution." Watch 'Monster' Ants Attack Faster Than the Blink of an Eye 2017-08-30T04:00:00Z It was one of those futuristic, convergent moments of tech on tech on tech that’s totally worthy of parody on HBO’s Silicon Valley. Tesla Model S is the epitome of a tablet on wheels 2017-06-19T04:00:00Z Once a trope of fantasy movies, the robotic sex doll is the result of convergent technologies. The race to build the world’s first sex robot 2017-04-27T04:00:00Z But the new features are the same in many cases, an instance of what biologists call convergent evolution, making it very hard to assign each group to its right place on the dinosaur family tree. Shaking Up the Dinosaur Family Tree 2017-03-22T04:00:00Z "A beautiful starburst of pointillist coloured nodes, a complex representation of convergent energies, the image visualizes a topic so important to discuss today." Colourful, creative and close up: Wellcome Images 2017 - BBC News 2017-03-15T04:00:00Z It is a classic example of convergent evolution, in which two organisms that are not closely related develop similar features because of the environment they adapted to and the ecological role they played. Tasmanian Tigers’ Brains Yield Clues Long After Extinction 2017-01-20T05:00:00Z “I’m really amazed to see how convergent the results are,” he says. 5000-year-old cobs reveal corn domestication in the act 2016-11-21T05:00:00Z For oviraptorosaurs, the beaks were “convergent evolution,” when similar features evolve independently among different groups of animals. A Dinosaur With a Beak and Feathers Unearthed in China 2016-11-10T05:00:00Z While the loose pastel-colored silhouettes seemed at times cluttered, through over-embellishment or because of the multiple layers that moved in convergent directions. Rihanna, new top designers debut at Paris Fashion Week 2016-09-28T04:00:00Z Those are some of the many convergent factors that add up to Montana’s excessive suicide rate, the highest in the nation at nearly 25 per 100,000 people. Montana Editorial Roundup 2016-09-14T04:00:00Z It's likely an example of convergent evolution, in which unrelated species evolve similar traits. How the Venomous, Egg-Laying Platypus Evolved 2016-07-30T04:00:00Z “He really cares about taking the findings in the animal models and looking how it’s really convergent with patient findings.” U.S. mental health institute puts champion of basic science at the helm 2016-07-29T04:00:00Z When multiple lineages develop similar features, scientists call it convergent evolution. T. rex wasn’t the only dinosaur to evolve pitifully puny arms 2016-07-14T04:00:00Z “I’m confident that creative thinking and convergent digital technologies will eventually lead to the digital programming of complex chemical and material systems,” Dr. Cronin said. BAE Systems, defense industry giant, aims to ‘grow’ specialized drones in chemical vats 2016-07-07T04:00:00Z They add, “Therefore we found it important to add to the convergent evidence on this question.” How many replication studies are enough? 2016-02-25T05:00:00Z The researchers said the resemblance was an example of "convergent evolution" in which disparate organisms independently evolve similar features to adapt to similar environments or ecological niches. Ancient armored mammal from Argentina was a huge armadillo 2016-02-22T05:00:00Z Its insect-like acrobatics are "a remarkable example of convergent evolution", the researchers write. Tiny sea snail 'swims like a bee' - BBC News 2016-02-18T05:00:00Z Finally, the independent expansions and nervous system enrichment of protocadherins in coleoid cephalopods and vertebrates offers a striking example of convergent evolution between these clades at the molecular level. The octopus genome and the evolution of cephalopod neural and morphological novelties : Nature : Nature Publishing Group 2015-08-11T04:00:00Z The two different systems for achieving small stature—which appears to be advantageous in the equatorial rainforest environment—are thus an example of convergent evolution. Diminutive Peoples Took Different Paths To Petite 2015-08-03T04:00:00Z Or did the auditory systems evolve independently to perform the same function, a phenomenon called convergent evolution? A 100-Year Debate About the Eardrum Comes to an End 2015-06-27T04:00:00Z Biologists call this convergent evolution, and it’s the same process by which birds and bats both evolved wings. Who ya callin’ bird brain? 2015-06-22T04:00:00Z The bizarre mix of features is an example of convergent evolution, where one species evolves bodily characteristics that arose separately in other species through the course of prehistory. New species of dinosaur, the regaliceratops, discovered in Canada 2015-06-04T04:00:00Z This clever strategy is an example of convergent evolution: adaptation by different creatures to similar environmental conditions. America lost the Cold War: Russia, China and the new autocratic world order 2015-05-27T04:00:00Z When very different creatures evolve similar traits, that’s convergent evolution, and it’s no big surprise. The Right Ratio to Engineer a Swim 2015-05-11T04:00:00Z "In the case of 'mosaic convergent evolution,' different parts of the body resemble those of other unrelated species, such as in the case of the platypus and Chilesaurus." 'Jigsaw puzzle' dinosaur Chilesaurus boasted weird mix of traits 2015-04-27T04:00:00Z Under ideal circumstances, I showed my technique to be uniformly convergent, meaning that it works well independently of the size of the problem. Ravens Offensive Lineman John Urschel Explains His Mathematics Paper 2015-03-26T04:00:00Z While the U.S. and Iran may have convergent interests in the defeat of Daesh, our interests generally diverge. Petraeus: The Islamic State isn’t our biggest problem in Iraq 2015-03-20T04:00:00Z This is the wonderful process of convergent evolution. How We Sense the Heat of Chili Peppers and the Cool of Menthol [Excerpt] 2015-02-04T05:00:00Z “So this is potentially a much wider, broader example of convergent evolution,” Dr. Zakon said. The Surprising Power of an Electric Eel’s Shock 2014-12-04T05:00:00Z The convergent crises would also trigger a global recession. Economic Sea Change Ahead 2014-10-14T04:00:00Z SET explains such parallels as convergent evolution: similar environmental conditions select for random genetic variation with equivalent results. Does evolutionary theory need a rethink? 2014-10-07T04:00:00Z But caffeine appears to be extra beneficial to plants since it evolved through different genetic mutations in coffee, chocolate and tea – a phenomenon called convergent evolution. Though It May Taste Divine, Coffee DNA Tells A Darwinian Tale 2014-09-30T04:00:00Z Before leaving Delhi on Thursday, Modi spoke of "shared values, convergent interests and complementary strengths" between India and the United States. Lawsuit makes for awkward start to Modi's big U.S. visit 2014-09-26T04:00:00Z Evolutionary biologists refer to this parallel change as convergent evolution. The Surprising Power of an Electric Eel’s Shock 2014-12-04T05:00:00Z Their divergent/convergent visions are in fine focus in two current exhibitions: Mr. Combs’s “Outhouse 2014,” an installation on view through Oct. A Review of 'Outhouse 2014' in Riverhead, and 'Deconstructing the Sayre Barn' in Southampton 2014-09-19T04:00:00Z Evolutionary biologists call this sort of process convergent evolution. How Caffeine Evolved to Help Plants Survive and Help People Wake Up 2014-09-04T04:00:00Z In short, convergent trends in renewable and distributed power, empowered customers, liberalized markets, transparent pricing, and radical end-use efficiency are building an energy future very different from the past. Accounting for the Expanding Carbon Shadow from Coal-Burning Plants 2014-08-28T04:00:00Z As is now common with the aging enfant terrible, many convergent silhouettes were thrown into the couture cauldron — including draped hoods, men's tuxedos and even silver silk sweat pants. 'Calm' Kardashian joins Emma Watson at Valentino 2014-07-09T04:00:00Z However the statement clarified that any divestitures are “conditioned” upon Telmex and Telcel ceasing to be “preponderant economic agents” and subject to asymmetric regulations, and being able to access the provision of convergent services. In A Surprising Move, Mexican Billionaire Carlos Slim To Sell Telecom Assets In Compliance With New Anti-Trust Rules 2014-07-09T04:00:00Z It’s a sign of the convergent times we live in that a Netflix show can not only garner an admiring audience in Season One but improve in Season Two while generating even more publicity. The 14 Best Moments On TV In The First Half of 2014 2014-06-30T04:00:00Z When convergent evolution produces the same complex trait more than once, it’s usually a sign of a powerfully useful adaptation. How Caffeine Evolved to Help Plants Survive and Help People Wake Up 2014-09-04T04:00:00Z The apparent similarities between shrews and sengis is called convergent evolution. How Much Elephant Is In That Mouse? 2014-06-29T04:00:00Z Of course the possibility exists that this is a case of convergent evolution. Blind cavefish are able to 'count' 2014-06-06T04:00:00Z “It’s an example of convergent evolution,” said Nathan Bailey, a biologist at the University of St. Andrews in Scotland and an author of the new study, which appears in Current Biology. On Separate Islands, Crickets Go Silent 2014-06-02T04:00:00Z This evidence suggests that the mutations happened independently on both islands, making the Hawaiian silent crickets “an excellent example of convergent evolution”, says evolutionary biologist Richard Harrison of Cornell University in Ithaca, New York. Evolution sparks silence of the crickets 2014-05-28T04:00:00Z As one student remarked at a CEO Connection Forum on Managing Millennials, “What I do is incredibly convergent with who I am.” Trying To Manage Millennials? Give Up And Lead Them Instead. 2014-05-27T04:00:00Z We are very lucky to be in two convergent markets: the New York City real estate market, but also the online real estate market. Daniel Levy 2014-05-13T04:00:00Z That’s why I boil it down to five most convergent areas. Ralph Nader: “The left is seized by fear and the right is driven by brass” 2014-05-02T11:44:00Z That appeared to be a coincidence; a case of convergent evolution. Fern evolution: Time and chance 2014-04-14T15:19:24Z Is humor a case of convergent evolution, a trait that evolved independently in separate lineages? Crows Aren’t Just Smart, They’re Also Jokers 2014-04-16T17:48:56Z The SAT is still a measure of convergent thinking: the ability to arrive at the single best answer deemed correct by a select committee. What the “New” SAT Misses Big Time 2014-03-12T14:53:49Z “We didn't expect for there to be nearly so many convergent findings among so many different researchers,” says economist Solomon Hsiang, now at U.C. Feeling Hot Can Fuel Rage 2014-01-24T13:00:00Z One example of a convergent series is 1/2+1/4+1/8+1/16…. Does 1+2+3 Really Equal -1/12? 2014-01-20T15:05:02Z If a dragon convergently evolved chemicals that combust upon mixing, like the explosive bombardier beetle, the reaction it harnessed could result in fire…terrible, terrible, fire. Smaug Breathes Fire Like A Bloated Bombardier Beetle With Flinted Teeth 2014-01-02T16:45:13.144Z He’s the founded and Executive Director of FutureMed, a program that explores convergent, rapidly developing technologies and their potential in biomedicine and healthcare. The Asymptotic Shift From Disease To Prevention--Thoughts For Digital Health 2013-12-12T19:47:00Z We discover that this time the life form is a result of convergent evolution, adapted to live inside partially molten rocks. Geologizing with Doctor Who 2013-11-24T12:45:00.480Z To investigate the prevalence of convergent evolution at a genome-wide level associated with the independent evolution of echolocation in bats and cetaceans, we used a method that builds on maximum-likelihood phylogenetic reconstruction. Genome-wide signatures of convergent evolution in echolocating mammals 2013-10-09T17:21:23.207Z If is finite, we call the series convergent. Does 1+2+3 Really Equal -1/12? 2014-01-20T15:05:02Z We call this convergent evolution, and it is one of biology’s dominant themes. Yeast: Making Food Great for 5,000 Years. But What Exactly Is it? 2013-09-06T22:15:02.410Z That would make our species' similarities a case of convergent evolution, when two vastly different organisms develop the same traits independently. Crows Show Off Their Social Skills 2013-08-26T12:45:00.570Z There was no warm peace, just a relationship based on convergent interests, Mr. Heller said, adding that peace “meant avoiding confrontation.” Israel Keeps a Wary Eye on Turmoil in Egypt 2013-08-16T20:27:57Z Other categories enriched in the most convergent genes are related to vesicle-mediated transport, regulation of cell cycle and cell death. Genome-wide signatures of convergent evolution in echolocating mammals 2013-10-09T17:21:23.207Z These conclusions are underpinned by phylogenetic analyses that fail to discriminate between common ancestry and convergent evolution and imply implausible rates of molecular evolution in mammalian genomes. [Technical Comment] Technical Comment on “The Placental Mammal Ancestor and the Post–K-Pg Radiation of Placentals” 2013-08-08T17:55:19.813Z The extent to which convergent evolutionary events are a common theme in ccRCC remains to be determined, but may indicate that critical genes will be represented across the tumour landscape for an individual mass. Comprehensive molecular characterization of clear cell renal cell carcinoma 2013-07-03T17:20:51.807Z We are able to talk and listen even where convergent and common positions take time to formulate. India Ink: India-U.S. Relations: The Search for a Transformative Moment 2013-06-24T06:01:38Z To then approach Kabel Deutschland suggests that this is merely an infill and that infrastructure ownership is ultimately necessary to provide a fully competitive convergent offer. Vodafone in early talks to buy Germany's biggest cable operator 2013-06-12T19:02:51Z However, similar traits might also evolve convergently in unrelated taxa owing to similar selection pressures. Genome-wide signatures of convergent evolution in echolocating mammals 2013-10-09T17:21:23.207Z One of the most important factors to consider is known among evolutionary scholars as homoplasy, or convergent evolution amongst unrelated lineages. The Mosaic of Human Origins 2013-04-17T13:45:14.013Z First, the “mobile” category no longer exists, reflecting that the gap between games created for the PC using indie-friendly development tools and games created for mobile platforms are reaching a level of convergent sophistication. Hot Lines And Cart Lifes - IGF Finalists Announced 2013-01-07T23:54:21Z The creature also illustrates convergent evolution, showing that some land-dwelling reptiles evolved into sleek-looking sea creatures in much the same way that some mammals evolved into whales and dolphins. ScienceShot: The First Sea Monster 2013-01-07T20:00:00Z Some Asian pitcher plants also use the "aquaplaning" method—a textbook example of convergent evolution, Bauer says, because Asian and South American pitchers are as related to each other "as we are to flatworms." One-Way Journey to the Death Pool 2012-12-19T00:15:00Z This first attempt to detect genome-wide convergent sequence evolution across divergent taxa reveals the phenomenon to be much more pervasive than previously recognized. Genome-wide signatures of convergent evolution in echolocating mammals 2013-10-09T17:21:23.207Z Yet as young researchers enter the field, the convergent challenges of climate change and public health are gaining visibility, he said. Green Blog: The Budding Health Care Costs of Climate Change 2012-12-10T20:17:42Z When separate species are exposed to the same selective pressures they often come up with the same solutions - a process known as convergent evolution. Blind fish share common ancestor 2012-08-31T16:20:11Z In parallel, the European Banking Authority will continue to perform its existing tasks, namely developing the single rulebook for the entire single market and ensuring convergent supervisory practice throughout the EU. Banking union is the key next step for eurozone integration 2012-08-30T09:46:21Z They also share a variety of other convergent traits, from small body size to aposematic coloration and diurnal activity, despite being found in places as disparate as Cuba, Australia, South America, and Madagascar. Poisonous Snakes Can't Resist Toxic Toad Tucker...Or Can They? 2012-08-21T14:45:00.217Z Unexpectedly, we also found convergence in many genes linked to vision: the convergent signal of many sensory genes was robustly correlated with the strength of natural selection. Genome-wide signatures of convergent evolution in echolocating mammals 2013-10-09T17:21:23.207Z The similar brains of whale and basking sharks, for example, are the result of convergent evolution. What Does A Whale Shark's Brain Look Like? (And Why Should We Care?) 2012-08-17T16:15:03.013Z Two independent studies of data produced by smashing proton particles together at CERN's Large Hadron Collider produced a convergent near-certainty on the existence of the new particle. "It's a boson:" Higgs quest bears new particle 2012-07-04T21:34:28Z These patterns would be very hard to explain in terms of convergent functional-site evolution or random coalescent fluctuations. Butterfly genome reveals promiscuous exchange of mimicry adaptations among species 2012-07-04T17:21:31.773Z Rather, hibernation might be a convergent trait that evolved independently several times in different groups of animals. The Mysterious Brain of the Fat-Tailed Dwarf Lemur, the World's Only Hibernating Primate 2012-06-18T20:15:00.283Z "They are about as related to each other as we are to flatworms, and yet their traps bear astonishing resemblance; a perfect system to study the drivers of convergent evolution." Pollutant turns fly-traps veggie 2012-06-13T23:46:37Z Because most other alphaproteobacteria are GC-rich, this may be a convergent feature that lead them to falsely conclude they were related. Mitiochondria Are Related to Ocean Bacteria, But Not to the Ones We Thought 2012-04-16T19:45:00.240Z Anthers convergent.—Aquatic and immersed, with capillary dissected leaves bearing little bladders, which float the plant at the time of flowering; or rooting in the mud, and sometimes with few or no leaves or bladders. The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee 2012-04-12T02:00:30.140Z In the red light of the setting sun, on the surface of the water, they could see the convergent lines of ripples spreading from the bows of the launch. Held by Chinese Brigands 2012-03-26T02:00:40.573Z I would expect to see operators moving first to fixed and mobile data caps and ultimately to convergent data caps in the next 18 months.” Amazon + Viacom = Fixed Network Data Caps and the End of TV as We Know It 2012-02-09T15:29:38Z You might argue that they’re convergent with an equally bizarre and fascinating group of tetrapods, the leatherback turtles. A symbiotic relationship between sunfish and albatrosses? Say what? 2012-02-02T04:15:00.337Z Notice icosahedral structures at top that evolved convergently with some virus capsids. Proteus: How Radiolarians Saved Ernst Haeckel 2012-01-31T21:45:07.440Z A negative biaxial optic figure is seen in convergent polarized light through the cleavage plane m, the axial plane being inclined at about 30� to the edge between m and t. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 8 "Cube" to "Daguerre, Louis" 2012-01-31T03:00:17.257Z And new research shows that the changes various cavefish populations went through occurred repeatedly—a massive, textbook example of convergent evolution. Dark-Dwelling Fish Converge On Blindness 2012-01-25T01:15:00.267Z The type of interference figure exhibited by a biaxial crystal in convergent polarized light between crossed nicols is represented in figs. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 7 "Crocoite" to "Cuba" 2012-01-22T03:00:24.397Z It is the essential function of the State, and the only function in which peoples can employ all their powers at once and convergently. The Great Illusion A Study of the Relation of Military Power to National Advantage 2012-01-11T03:00:19.077Z Its conquest and colonization had been effected upon two convergent lines, that by water, by the River Plate, that by land, from the north. The Social Evolution of the Argentine Republic 2011-11-24T03:00:43.903Z A properly, combined attack of convergent columns framed ab initio by a good staff officer, such as Mack, might indeed have given good results. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 2 "French Literature" to "Frost, William" 2011-10-14T02:00:26.280Z We present one hypothesis here: At local scales, soil depth tends to increase with decreasing elevation in convergent environments. [Technical Response] Response to Comments on ?Changes in Climatic Water Balance Drive Downhill Shifts in Plant Species? Optimum Elevations? 2011-10-13T18:25:24.797Z The interference figure seen in convergent polarized light is symmetrical about two lines at right angles. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 7 "Crocoite" to "Cuba" 2012-01-22T03:00:24.397Z In addition to the utility of the A. carolinensis genome sequence as a representative of non-avian reptiles, Anolis species are a unique resource for the study of adaptive radiation and convergent evolution. The genome of the green anole lizard and a comparative analysis with birds and mammals 2011-09-28T17:21:44.667Z By comparing the A. carolinensis genome to shorter sequences from 92 other Anolis species, the authors uncovered evidence that similar features seen in different species resulted from convergent evolution rather than inter-island migration. Lizard Genome Unveiled 2011-08-31T21:15:00.243Z In applications to mathematical physics great importance attaches to convergent integrals and to principal values of divergent integrals. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3 "Frost" to "Fyzabad" 2011-08-15T02:00:28.473Z "This is a major breakthrough and a beautiful example of convergent evolution where vertebrates at least five times have independently evolved" this ability "by modifying different cell types to serve the same function." Guiana Dolphins Can Use Electric Signals to Locate Prey 2011-07-27T00:03:00Z Associated and convergent movements may be interfered with pathologically in different ways. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 1 "Evangelical Church Conference" to "Fairbairn, Sir William" 2011-07-16T02:00:16.387Z Rather, the Greater Antillean faunas, renowned for the extent to which the same ecomorphs are found on each island, are primarily the result of convergent evolution. The genome of the green anole lizard and a comparative analysis with birds and mammals 2011-09-28T17:21:44.667Z Mrs. B. This results from the convergent property of the concave mirror. Conversations on Natural Philosophy, in which the Elements of that Science are Familiarly Explained 2011-07-12T02:00:28.027Z When the improper definite integral of a function which becomes, or tends to become, infinite, exists, the integral is said to be “convergent.” Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3 "Frost" to "Fyzabad" 2011-08-15T02:00:28.473Z Should Google stream line convergent offerings for the enterprise, it will be poised to dethrone many incumbents. Product Review: GooglePlus, Consumerization of IT, and Crossing The Chasm For Enterprise Social Business 2011-07-03T19:24:58Z It is otherwise, however, with the proper co-ordination of convergent movements. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 1 "Evangelical Church Conference" to "Fairbairn, Sir William" 2011-07-16T02:00:16.387Z "Our analysis, which was convergent between us and the Americans, was that the traditional tools were not sufficient and that we needed to create a surprise effect in the markets," the European diplomatic source added. IEA's move meant to send a shock wave to the market 2011-06-28T11:15:48Z It is also manifest that if the convergence were strongly pronounced and the confluence complete, the indentation at the convergent end would tend to be quite obliterated. The Descent of Man and Selection in Relation to Sex Volume II (1st Edition) 2011-06-27T02:01:01.007Z Thus the series may be integrated, and the resulting series is also uniformly convergent. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3 "Frost" to "Fyzabad" 2011-08-15T02:00:28.473Z The normal position of the axes of human eyes is convergent or parallel but it is possible to diverge the axes. Visual Illusions Their Causes, Characteristics and Applications 2011-06-02T02:00:25.247Z Suddenly, it gets to a place where it is constricted by the levees, which are acting somewhat like a convergent nozzle. Levees and the illusion of flood control [Explainer] 2011-05-20T14:15:00.253Z “It used to be hard for me to be convergent and to concentrate,” he said. Focused on the Swing, Not the Score 2011-05-11T00:56:47Z The symbolism of that orbital path is not lost on the reader as the progression of Dr. Ebbesmeyer’s career is built, piece by piece, through the years with convergent topics and emergent phenomena. Slabs, Sneakers, Gyres and the Grotesque 2011-05-02T16:15:07.177Z By the nature of the proof, which holds for all positions of z outside the small circles spoken of, the series is also clearly uniformly convergent outside these circles. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3 "Frost" to "Fyzabad" 2011-08-15T02:00:28.473Z The condenser is mounted in separate arm above the polarizer and swings out of the optical axis by means of a lever, if parallel instead of convergent rays are desired. Microscopes and Accessory Apparatus Catalogue No. 40 2011-04-14T02:00:42.743Z “Point 3 is interpreting examples of parallel and convergent evolution as evidence that the designer solves the same problem the same way in different organisms,” McPeek said. Failing the Science Test 2011-03-31T16:09:57Z From sunrise a person might stand in the church yard and looking out over the Valley see the worshippers leaving their distant homes and in convergent and ever-increasing numbers approach the church from every direction. Voices; Birth-Marks; The Man and the Elephant 2011-03-28T02:00:27.040Z Cure of convergent squint by means of convex glasses. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z In their doctrine and genius they may seem to be too much opposed to be at all convergent or combinable in their wisdom. Three Philosophical Poets Lucretius, Dante, and Goethe 2011-03-20T02:00:33.357Z He was lying in a crumpled attitude on a patch of snow between convergent rocks, and the lynx, a mass of blood smeared silvery fur, was in some way mixed up with him. Marriage 2011-02-22T03:00:06.867Z In fact, the similarities they share are only due to convergent evolution – similar traits evolving in two completely separate groups of species. Ugly animals need love, too 2011-02-18T14:15:00.253Z "It would be rash simply to assume that those features are immune from" convergent evolution, conclude the authors. Was "Ardi" not a human ancestor after all? New review raises doubts 2011-02-16T22:15:00.293Z Moreover, ophthalmoscopic determination of the error in convergent strabismus is specially difficult, for one cannot advise the patient as to a suitable direction for the eye not under investigation. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z The west side of the river, as well as the east, of which we have been more especially speaking, presented here also a collection of convergent "hog's backs" and deeply channelled water-courses. Toronto of Old 2011-02-10T03:00:45.907Z In the case of the convergent pigs above referred to, evidence of their descent from two primitive stocks is still plainly retained, according to Von Nathusius, in certain bones of their skulls. The Descent of Man and Selection in Relation to Sex, Vol. I 2011-01-17T03:00:49.523Z “Pluto’s atmosphere is kind of a like a crummy convergent lens,” said Eliot F. Young, an astronomer at Southwest Research Institute’s space studies department in Boulder, Colo., who was an author of the 2006 paper. The War of the Worlds, Round 2 2011-01-10T20:46:17Z For example, rather than indicating a direct link to modern humans, the familiar features of some purported human ancestors, including , might be explained by convergent evolution. Was "Ardi" not a human ancestor after all? New review raises doubts 2011-02-16T22:15:00.293Z Dr. Isler in his dissertation, 'The Dependence of Strabismus on Refraction,' gives the percentage of hypermetropia in convergent squint as 88 per cent.—a great difference, which can, however, be partly accounted for. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z These details suggest not only convergent evolution, but also another selective force acting on the fish species. Copycat catfish evade competition 2011-01-05T19:45:00.233Z See them sweep past the convergent points and radial lines! The Boys of '61 or, Four Years of Fighting, Personal Observations with the Army and Navy 2011-01-05T03:00:55.123Z This being so, it would be premature to disregard the convergent lines of historical evidence which tell against A.D. Encyclopaedia Britannica, 11th Edition, Volume 3, Slice 7 "Bible" to "Bisectrix" 2010-12-20T17:12:05.780Z There's a real opportunity for convergent technologies between people coming out of those hi-tech companies and those new entrepreneurs from the construction industry in web-based technologies and in innovative design. Ireland's adversity may be an opportunity to foster new technologies 2010-11-21T00:03:00Z The fact that these are not so strongly represented in convergent strabismus, as one would have expected according to his theory, had also struck Donders. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z The DNA changes in the mammoth hemoglobin genes differ from those in other arctic animals, an instance of convergent evolution or attaining the same end by a different genetic route. Mammoth Hemoglobin Offers More Clues to Its Arctic Evolution 2010-05-03T23:05:00Z “The ant societies” — this is now Professor Norville speaking — “proved different in most fundamental ways from those of humans — of course — yet also convergent to them in other, also important ways.” Books of The Times: ?Anthill? by E. O. Wilson: Coming-of-Age Tale 2010-04-08T20:48:00Z “The tablet is the first truly convergent electronic device,” he says. 2010-01-27T17:05:00Z It’s a great example of convergent evolution, of species independently acquiring the same traits. 2010-01-05T05:47:00Z Were the increased demand on the accommodation really the cause of convergent strabismus, asthenopia would be far more common than it is among hypermetropic children who do not squint. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z The variety known as leucocyclite shows, when examined in convergent polarized light, a peculiar interference figure, the rings being alternately white and violet-black and not coloured as in a normal figure seen in white light. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 3 "Apollodorus" to "Aral" The optic figure seen in convergent polarized light through a section cut parallel to the plane of symmetry of a borax crystal is symmetrical only with respect to the central point. Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 2 "Bohemia" to "Borgia, Francis" Both the terms 'lines' and 'convergent' imply that the reality is spatial. Kant's Theory of Knowledge One question about convergent evolution is the mechanism by which it happens. 2010-01-05T05:47:00Z This identity presupposes the habit of binocular fusion; but convergent squint arises, as a rule, before this habit is acquired. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z When the waves are convergent and the recipient screen is placed so as to contain the centre of convergency—the image of the original radiant point, the calculation assumes a less complicated form. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 4 "Diameter" to "Dinarchus" Fortunately, we have other convergent indications which can guide us with greater precision. Crécy It may be stated thus: 'If the lines are not convergent, how is it possible even to say that they look convergent? Kant's Theory of Knowledge Every even convergent is greater than every odd convergent; every odd convergent is less than, and every even convergent greater than, any following convergent. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 2 "Constantine Pavlovich" to "Convention" Afterwards, Donders sought to explain the occurrence of convergent strabismus in emmetropia by paresis of accommodation, which must indeed, according to his theory, produce the same result as hypermetropia. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z Fraunhofer’s Diffraction Phenomena.—A very general problem in diffraction is the investigation of the distribution of light over a screen upon which impinge divergent or convergent spherical waves after passage through various diffracting apertures. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 4 "Diameter" to "Dinarchus" They all began to move abroad, and their ways were convergent. The Law-Breakers In the second place, the assertion that the lines look convergent implies considerable knowledge of the real nature of the reality to which the assertion relates. Kant's Theory of Knowledge When we can solve this equation we have an expression for the nth convergent to the fraction, generally in the form of the quotient of two series, each of n terms. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 2 "Constantine Pavlovich" to "Convention" The opinion is prevalent that convergent strabismus usually begins in the form of periodic squint, and that a permanent deviation is developed in this way only. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z Capillitium of numerous convergent ribs, which extend from base to apex, and are united by fine transverse fibers, thus forming a network of rectangular meshes. The Myxomycetes of the Miami Valley, Ohio The transcendentalism of Emerson, the naturalism of Zola, the cynicism of La Rochefoucauld are all convergent streams in the torrent of reforming words which make the soul fertile. Mountain Meditations and some subjects of the day and the war Even the term 'convergent', in the assertion that the lines look convergent, conveys this implication. Kant's Theory of Knowledge Its nth convergent is not equal to the sum to n terms of the series. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 2 "Constantine Pavlovich" to "Convention" In many cases it may be so; on the other hand I have sometimes seen convergent strabismus arise suddenly, without a preliminary stage of periodic squint. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z Coming along before the storm, but on a convergent course which would soon bring her in the big ship's wake, was the steamer Proserpine towing her barges. The Boy Scouts Book of Stories In geography, a stream which comes into another stream, but whose course is unknown, is simply a convergent. The Sailor's Word-Book An Alphabetical Digest of Nautical Terms, including Some More Especially Military and Scientific, but Useful to Seamen; as well as Archaisms of Early Voyagers, etc. Operations for Divergent Squint.—This very serious deformity is often the result of the operation for convergent squint, and is associated with a fixed, leering, and prominent eye, and frequently with most annoying double vision. A Manual of the Operations of Surgery For the Use of Senior Students, House Surgeons, and Junior Practitioners Every convergent is nearer to the value of the whole fraction than any preceding convergent. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 2 "Constantine Pavlovich" to "Convention" The eyes generally have a perfectly normal position, but occasionally convergent squint occurs, remains in existence a few hours, perhaps for a whole day even, and disappears again. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z The lens of the electric lamp was now placed so as to form within the tube a strongly convergent cone of rays. the tube was cleansed and again filled in darkness. Fragments of science, V. 1-2 A stream flowing laterally out of a river, contradistinguished from convergent. The Sailor's Word-Book An Alphabetical Digest of Nautical Terms, including Some More Especially Military and Scientific, but Useful to Seamen; as well as Archaisms of Early Voyagers, etc. Professor, on ligature of internal iliac, 15.Strabismus, convergent, 156.divergent, A Manual of the Operations of Surgery For the Use of Senior Students, House Surgeons, and Junior Practitioners A method was given by J. H. Lambert for expressing as a continued fraction of the preceding type the quotient of two convergent power series. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 2 "Constantine Pavlovich" to "Convention" It happens, indeed, that in considerable degrees of hypermetropia a slight convergent deviation occurs only from time to time, the cause of which, on closer investigation, can only be sought in the ocular muscles. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z In the track of the beam was placed a large plano-convex lens, which formed a fine convergent cone in the dust of the room behind it. Fragments of science, V. 1-2 The convergent lady-beetle; a, adult; b, pupa; c, larva; all enlarged. An Elementary Study of Insects Vertical cephalic bristles: in Diptera, are two pairs, inner and outer, inserted more or less behind the upper and inner corner of the eye; erect, or the inner pair convergent, the outer pair divergent. Explanation of Terms Used in Entomology It is always possible to find the value of the nth convergent to a recurring continued fraction. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 2 "Constantine Pavlovich" to "Convention" For near objects the myopic eye is used without accommodation and therefore also without convergent strabismus of the right. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z The slightly convergent beam of the electric light was then sent through the mixture. Fragments of science, V. 1-2 It is the essential form of the State, and the only function in which peoples can employ all their powers at once and convergently. Memories and Studies The happiest and most favorable results can be reached by a convergent and simultaneous action of the allied forces. The New York Times Current History, A Monthly Magazine The European War, March 1915 Every convergent is a nearer approximation to the value of the whole fraction than any fraction whose denominator is less than that of the convergent. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 2 "Constantine Pavlovich" to "Convention" Moreover, according to the common use of language, I have only used the expression periodic convergent squint for the change between a parallel direction of the visual axes and pathological convergence. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z Fruit.—Fruit ripe in June, hanging on long stems, varying from brown to crimson; keys about an inch in length, at first convergent, at maturity more or less divergent. Handbook of the Trees of New England From this single grand outline, all the minor lines either start, or towards it tend, indirectly, in convergent curves. The Arena Volume 4, No. 21, August, 1891 At the bottom of the tub a number of bottles were laid in convergent rows, so that the neck of each bottle turned towards the centre. Complete Hypnotism, Mesmerism, Mind-Reading and Spiritualism How to Hypnotize: Being an Exhaustive and Practical System of Method, Application, and Use A continued fraction may always be found whose nth convergent shall be equal to the sum to n terms of a given series or the product to n factors of a given continued product. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 2 "Constantine Pavlovich" to "Convention" The attempt to turn the eye outwards is accompanied by short convulsive movements, and followed by an immediate rebound to the convergent position. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z Disturbed by this thought, he fixed his attention on two almost convergent lights on shore, rowing with renewed energy as he watched them. Never-Fail Blake All historical conclusions, then, depend on a sum of convergent and conflicting probabilities in the nature of circumstantial evidence. Logic Deductive and Inductive The divinity of the Holy Spirit is shown by many convergent lines of evidence, but it was still an open question whether that divinity amounts to co-essential and co-equal deity. The Arian Controversy In this case the sum to n terms of the series is equal to the nth convergent of the fraction. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 2 "Constantine Pavlovich" to "Convention" If we want to draw a comparison between convergent and divergent squint, we must consider only absolute divergent strabismus, for convergent strabismus does not offer a parallel to relative divergent squint. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z A convergent beam, reflected at a nearly grazing incidence from the twin planes, depicts upon the screen an arc of light, which is interrupted by a dark spot corresponding to the plane of symmetry. Scientific American Supplement, No. 711, August 17, 1889 In fact, no image is allowed to be formed in this arrangement, but the convergent pencils are intercepted by the concave eye-glass, and converted into parallel emergent pencils. Half-hours with the Telescope Being a Popular Guide to the Use of the Telescope as a Means of Amusement and Instruction. This is shown by four convergent lines of argument. The Arian Controversy In enumerating the many convergent tendencies which worked together in strengthening the national life, we must not forget the growing importance of commerce. The History of England From the Accession of Henry III. to the Death of Edward III. (1216-1377) If any harmful influence were to be feared for the fixing eye, one would observe the same in convergent squint, when, as a rule, one eye only is used for fixation even after operation. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z The colored spectral bands being the direct result of the property of interference, or the want of correspondence of the wave lengths due to divergence; the same phenomenon being also observed in convergent light. Scientific American Supplement, No. 441, June 14, 1884. By using a concave glass of shorter focus, which would therefore be placed nearer to m p, the whole of the convergent pencil might be received in this as in the former case. Half-hours with the Telescope Being a Popular Guide to the Use of the Telescope as a Means of Amusement and Instruction. The last and most projecting course is made up of twenty-six convergent stones, which are held in place by merely the weight of the abacus. Manual of Egyptian Archaeology and Guide to the Study of Antiquities in Egypt “Unroasted coffee” will no longer be accepted under the official seal,—another reason for a new literary combination for distinct special objects, a review in which every separate article should be convergent. Lady Byron Vindicated A history of the Byron controversy from its beginning in 1816 to the present time In convergent strabismus, however, no one, at least no ophthalmologist, thinks of entertaining such fears for the eye used in fixation, and where is the physiological basis of this whole idea to be found? Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z By this mirror we can cause the rays to issue through the orifice in front of the camera, either parallel or convergent. Six Lectures on Light Delivered In The United States In 1872-1873 The age of isolation and divergent evolution is passing away, and that of international association and convergent social evolution has begun. Evolution Of The Japanese, Social And Psychic Men rush ahead, peer into my face, deliver themselves of the above-mentioned peculiar squeak, and run hastily down some convergent alley-way. Around the World on a Bicycle - Volume II From Teheran To Yokohama Divergent or convergent operations may be either very good or very bad: all depends on the situation of the respective forces. The Art of War The double tenotomy of the externi performed on January 2nd was first followed by convergent squint with homonymous double images, which were united by a prism of 12° with the base inwards. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z These two movements towards a fuller liberty of self-fulfilment, and towards a fuller and stronger social life, are convergent, and supplement, or rather complement, each other. Cambridge Essays on Education The psychic evolution of social groups is divergent so long as isolation is fairly complete, but becomes convergent in proportion to association. Evolution Of The Japanese, Social And Psychic Men are not kindled to such a height without many convergent rays of fellowship. Shakespeare: His Life, Art, And Characters, Volume I. With An Historical Sketch Of The Origin And Growth Of The Drama In England From the arc of the upper circle convergent beams of light pierced through gloom and broke violently on this group of the half-clad lovely and the swathed grotesque. The Pretty Lady Habits cling more closely in adults, therefore that form of convergent squint in particular, which usually develops quickly in myopia of average degree, causes annoying diplopia to last for a longer time. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z It takes place also, however, with a change in the convergence of the optical axes, whether they are parallel to each other or more convergent. The Boy Mechanic: Volume 1 700 Things for Boys to Do All ten hens went for that egg in a convergent attack, and all ten pecks got home simultaneously. Punch, or the London Charivari, Volume 156, May 21, 1919 The optic agent has three direct or convergent glances. Delsarte System of Oratory Suddenly she squinted—squinted horribly; not with the familiar convergent squint which burlesque artists imitate, but with external or divergent squint of extreme near sight or unequal vision. The Mystery of 31 New Inn Left eye has convergent squint, V. 1/36, No. 3·0 is read with + 6·5 D. The hereditary tendency is seen also in the following case: Case 23.—Mrs. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z Expressed in bare numbers, it is like the convergent series 1/2 plus 1/4 plus 1/8…, of which the limit is one. A Pluralistic Universe Hibbert Lectures at Manchester College on the Present Situation in Philosophy This cone rests upon the convergent one, B, whose angle, as we have said, varies between 35° and 45°. Scientific American Supplement, No. 458, October 11, 1884 Moreover, the entirely artificial nature of the State boundaries, representing no necessary cleavages and traversed haphazard by the lines of communication, made some of these State foundations unnecessary and others inadequate to a convergent demand. An Englishman Looks at the World Serbia has been overrun, but never were the convergent forces of adjacent interests so clearly in favour of her recuperation. What is Coming? The spontaneous cure of squint may, however, be quite complete; indeed I have seen one case where convergent squint became divergent. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z There may be antagonism among manufacturers; but, in spite of them, social action is one, convergent, harmonious,—in a word, personal. System of Economical Contradictions; or, the Philosophy of Misery As for the height to be given the convergent cone, B, that is determined by the opening of the angle according to which it has been constructed. Scientific American Supplement, No. 458, October 11, 1884 And there, in the focus of a million pairs of convergent eyes, the Ambitious Person sat him down between the sun and moon and murmured sadly to his own soul: “Marooned, by thunder!” Fantastic Fables If to the blind but convergent and harmonious instincts of a swarm of bees should be suddenly added reflection and judgment, the little society could not long exist. What is Property? On December 9th, atropine was discontinued; on the 14th, the position of the eyes was still quite normal; on the 19th, permanent convergent squint of the left eye was present. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z It is again a case in which the chances of convergent heredity have produced a result which in its magnitude, in its heights and in its depths, none could foresee. Essays in War-Time Further Studies in the Task of Social Hygiene Nothing shows the distinction better than convergent adaptation. Hormones and Heredity The third type is met with in the Drake burner, where the divergent arms are wide and have an internal thread into which screws an external thread cut upon lateral prolongations of the convergent tubes. Acetylene, the Principles of Its Generation and Use A Practical Handbook on the Production, Purification, and Subsequent Treatment of Acetylene for the Development of Light, Heat, and Power And if the parents' traits are similar Their traits may be prepotent in a child, Thus giving rise to qualities convergent. Toward the Gulf On April 3rd, as patient stopped for a few hours on her journey through, a striking convergent squint of the left eye was seen. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z It is to this tendency in the parents of men of genius, leading to a convergent heredity, that we must probably attribute the undue tendency of the men of genius themselves to manifest insanity. Essays in War-Time Further Studies in the Task of Social Hygiene Towards night the sea was covered with great bluish clouds; and when they disappeared we saw, at an immense height, fleecy clouds in regular spaces, and ranged in convergent bands. Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 3 Two convergent factors had led up to this sudden change in his life. A Girl Among the Anarchists The movement of the series becomes no longer a cycle, but spiral, and convergent or divergent at a greater or less rate according to circumstances. Unconscious Memory We cannot conclude the consideration of the operative treatment of convergent squint without once more returning to the relation between the line of vision and the position of the cornea. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z There is another factor to be invoked here: convergent morbid heredity. Essays in War-Time Further Studies in the Task of Social Hygiene Kippy haled me to the top of a tall tree whence we watched the convergent argosies, hundreds of tiny specks each bearing an outspread taa-taa of gleaming leaves. The Cruise of the Kawa There is a considerable mass of convergent testimony to the fact that Shelley's voice was high pitched, and that when he became excited, he raised it to a scream. Percy Bysshe Shelley Getting wind of the Emperor's design, Osbech collected his forces, and, lest he should be caught and crushed between the convergent armies of two most mighty potentates, advanced against the King of Cappadocia. The Decameron, Volume I Cases in which convergent squint is followed by troublesome double images, appear, with the exception of the hysterical form mentioned on p. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z Apart from the tendency to convergent heredity already emphasised, there is a wider tendency to slight abnormality, a minor degree of inaptness for ordinary life in the parentage of genius. Essays in War-Time Further Studies in the Task of Social Hygiene Another crosses the north of Moldavia and Bessarabia, following a direction convergent with the former. Manners and Monuments of Prehistoric Peoples The net lies submerged until fish coming down stream are directed on to the net by the convergent fences. The Pagan Tribes of Borneo Famous only if they have been convergent and exclusive.' Desperate Remedies At 4 mm. the crossed diplopia is corrected by prism 23°; a convergent movement is no longer attained, at most parallelism of the visual axes. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z Many convergent lines are drawn on a color monitor in such a way that every pixel struck has its color incremented. The Jargon File, Version 4.2.2, 20 Aug 2000 But this instruction can be healthy only through a series of preliminary and convergent judgments, insinuating into all minds the final approval and well-founded admiration of the existing r�gime. The Modern Regime, Volume 2 It is also manifest that if the convergence were strongly pronounced and the confluence complete, the indentation at the convergent end would tend to disappear. The Descent of Man The space occupied by the convergent rails seems to be sufficient for a large farm. The Prime Minister A week after the operation convergent squint of 2 mm. is present with homonymous diplopia. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z He speaks of and illustrates by sketches, the deflection, both convergent and divergent, of the lines of force, when they pass respectively through magnetic and diamagnetic bodies. Faraday as a Discoverer As they hurried down towards this city of refuge a long string of mules burthened with great bales of green stuff appeared upon a convergent track to the left. The Research Magnificent In the case of the convergent races of pigs above referred to, evidence of their descent from two primitive stocks is, according to von Nathusius, still plainly retained, in certain bones of their skulls. The Descent of Man They did not know how tired I was, how exhausted mentally and morally, nor how cruel their convergent attack on me chanced to be. The New Machiavelli In divergent strabismus this is apparent, but in convergent strabismus the squinting eye governs the field of vision on the side to which it turns. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z It cannot be denied that the relation existing between convergent strabismus and hypermetropia may be as Donders represents it; the only question is, whether it really is so. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z A fact that had never been stated, never formulated, never in any way admitted, was suddenly pointed to convergently by a thousand indicating fingers, and beyond question perceived to be THERE.... The Research Magnificent If Donders' theory is right, convergent strabismus must really begin, as soon as double hypermetropia meets with causes which depreciate the value of binocular vision. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z The theory may be tested then by statistics, which confront the cases of hypermetropia and convergent strabismus with those cases in which hypermetropia meets with Donders' conditions and normal binocular vision still remains. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z Squinting upwards or downwards seldom occurs as a symptom by itself; more frequently it is associated with convergent or divergent squint. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z The attempt has really been made to attribute the commencement of convergent strabismus to the accommodation even in emmetropia, and offers fresh proof how easily facts are overwhelmed by theories. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z But, further, if paresis of accommodation really had the significance assigned to it, atropine, which is so frequently used in the ophthalmic treatment of children, would be followed by convergent strabismus. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z For a long time tendency to convergent squint, which is combined with diplopia, has existed on the left side. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z It may, therefore, be useful for our purpose to cite a few cases of periodic convergent strabismus with emmetropia. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z Alternating squint is usually divergent, with short sight on one side, still convergent strabismus may occur under these conditions. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z At first sight the position of the eyes appeared to be quite normal, on more careful inspection slight convergent squint of the right eye showed itself occasionally. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z Sophie S—, æt. 7-3/4, has suffered for two years from a strong convergent squint on the left side, occurring every other day. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z It is otherwise in those cases of hypermetropia of high degree in which patients voluntarily call forth convergent squint, and retain it for a short time for the purpose of distinct vision. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z I must first state prominently with regard to the connection of myopia with convergent squint that I see no reason for holding short sight to be the cause of the squint, as v. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z To Donders belongs the merit of having pointed out the presence of hypermetropia in about two thirds of all cases of convergent strabismus. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z As a rule preponderance of the interni in hypermetropia leads eventually to convergent squint even in childhood. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z In those cases in which convergent squint is present in the whole field of vision paralysis of the abducens cannot be the sole cause, but some other cause than the most apparent one must co-operate. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z In the hysterical form we see rather a rare variety of convergent squint, which is conditional on contraction of the interni through restriction of movement of the externi. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z Still the elastic tension of the ocular muscles decides even here; if the interni preponderate, convergent squint results, when the myopic eye is used for near objects, the emmetropic for distant ones. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z It is important to notice that Donders' theory makes convergent squint appear as almost a necessary consequence of hypermetropia. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z A convergent movement is not attained, either for near objects, or by means of prisms with bases outwards for distant ones. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z We rarely have an opportunity of watching the disappearance of squint, still I have observed two cases in which a permanent convergent squint disappeared after about a year. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z Periodic convergent squint offers a less certain ground for the operation. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z At the beginning of 1879, diplopia was again present to a troublesome degree, particularly on looking downwards; on looking straight forwards the left eye showed a slight convergent deviation, amounting at most to 2 mm. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z According to Donders all these furnish a reason why, in existing hypermetropia, binocular fixation should be abandoned and convergent strabismus developed. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z In convergent squint with congenital paresis of the abducens, not much can be attained without shortening the abducens. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z The immediate result was convergent squint, with a defect in movement outwards amounting to 4 to 5 mm. in both eyes. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z No convergent movement on fixing a pencil about 25 cm. distant; the right eye is then used for reading, the left one makes a distinct, but not a sufficient, movement inwards. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z Two weeks later slight convergent squint was present; in November, 1877, six months after the operation, the position of the left eye was perfectly normal. Schweigger on Squint A Monograph by Dr. C. Schweigger 2011-03-22T02:00:22.370Z |
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