| 单词 | spectroscopic |
| 例句 | The first hint of the true situation came not from spectroscopic studies in the visible or near-infrared parts of the spectrum, but rather from the radio region. Cosmos 1980-01-01T00:00:00Z This is the second time individual heavy elements have been detected using spectroscopic observations after a neutron star merger, providing invaluable insight into how these vital building blocks needed for life are formed. Massive space explosion observed creating elements needed for life 2023-10-25T04:00:00Z However, until now, no scientists have studied whether changing the stacking order affects the spectroscopic properties of these heterostructures. Scientists discover 'flipping' layers in heterostructures to cause changes in their properties 2023-10-11T04:00:00Z The detected signals were then used to conduct spectroscopic analysis to identify the precise composition of the desorbed ions. Ionic crystal generates molecular ions upon positron irradiation, finds new study 2023-10-10T04:00:00Z I was doing my graduate work in infrared astronomy at Imperial College in the 1970s, and one of the professors had been doing spectroscopic studies of zodiacal dust. Meet the rock guitarist who helped NASA land on an asteroid 2023-10-04T04:00:00Z In order to understand the physics of these red quasars, "spectroscopic" measurements are required, which can be used to analyse the quasar light at different wavelengths. Hidden supermassive black holes reveal their secrets through radio signals 2023-09-25T04:00:00Z In addition to measuring the BAO yardstick, Euclid’s spectroscopic survey can chronicle how gravity pulled clusters of galaxies into sheets and filaments over time, forming the cosmic web. Euclid telescope to seek source of dark energy—the biggest mystery in the universe 2023-06-21T04:00:00Z For now the galaxies have only been studied by photometry, with spectroscopic analysis planned for July. JWST’s Newfound Galaxies Are the Oldest Ever Seen 2023-04-13T04:00:00Z "Typically what happens is you discover comets because they have a coma, and then you go and measure the gas via other means like getting spectroscopic measurements," he said. A new paper says 'Oumuamua was a comet, not an alien spacecraft. Not everyone agrees 2023-03-26T04:00:00Z “I’m not willing to say it ‘solves’ things — the smoking gun there would be to have detected hydrogen spectroscopically,” she added. Oumuamua Was a Comet After All, a Study Suggests 2023-03-22T04:00:00Z And the earlier spectroscopic analysis of the Tondo, which found traces of pigments used in the 16th century, might have actually detected a later copy that had used 16th-century pigments to look authentic, she says. Mystery Portrait May Be a Raphael, Artificial Intelligence Suggests 2023-02-03T05:00:00Z This makes Kartaltepe’s spectroscopic follow-up not only an important probe of the galaxies’ stellar populations but also yet another “reality check” of their cosmic vintage. Astronomers Grapple with JWST’s Discovery of Early Galaxies 2022-12-06T05:00:00Z Thus, while the photometric results came thick and fast last summer, the spectroscopic results have only just begun trickling out. JWST’s Newfound Galaxies Are the Oldest Ever Seen 2023-04-13T04:00:00Z But it was his other early work, studying the spectroscopic fingerprint of hydrogen, that would prove crucial a decade later, when he discovered an object that made a supernova look like a child’s cap gun. Maarten Schmidt, Caltech astronomer who changed our understanding of the cosmos, dies 2022-09-23T04:00:00Z Each spin direction has a different energy; hence, spectroscopic lines are split into two. College Physics for AP Courses 2015-08-12T00:00:00Z Given that only about 5% of the galaxies visible in the Hubble Deep Field are bright enough for astronomers to study spectroscopically, they need to make the most of the other 95%. Astronomy 2016-10-13T00:00:00Z Also, this spectroscopic information can be used as an interstellar speedometer. An Introduction to Geology 2017-01-01T00:00:00Z The highly anticipated July 12 unveiling of pictures and spectroscopic data from the newly operational observatory follows a six-month process of remotely unfurling various components, aligning its mirrors and calibrating instruments. NASA to showcase Webb space telescope's first full-color images 2022-07-10T04:00:00Z Only certain orbits were allowed, and jumping between them seemed to provide an accurate explanation for the quanta of light seen in spectroscopic emissions at least for the simple case of hydrogen. It Has Been 100 Years Since a Quantum Experiment Showed Why We Don’ Fall Through Our Chairs 2022-02-08T05:00:00Z In addition to their use as novelty items, diffraction gratings are commonly used for spectroscopic dispersion and analysis of light. College Physics for AP Courses 2015-08-12T00:00:00Z In visual binaries, the two stars can be seen separately in a telescope, whereas in a spectroscopic binary, only the spectrum reveals the presence of two stars. Astronomy 2016-10-13T00:00:00Z Finely tuned spectroscopic measurements from space are a better approach to surveying plants, he says. Airborne DNA from plants could reveal invasive species, impact of climate change 2021-12-30T05:00:00Z As an exoplanet passes in front of its star, its atmosphere is backlit, enabling scientists on Earth to study the spectroscopic signatures of elements and molecules. Webb Telescope Prepares to Ascend, With an Eye Toward Our Origins 2021-12-20T05:00:00Z By cross-referencing the data with ground-based measurements of plant physiology, the researchers were able to develop computer models that turn the spectroscopic surveys into useful information about the health and diversity of the forest. Satellites offer new ways to study ecosystems—and maybe even save them 2021-11-17T05:00:00Z While this can be used as a spectroscopic tool—a diffraction grating disperses light according to wavelength, for example, and is used to produce spectra—diffraction also limits the detail we can obtain in images. College Physics for AP Courses 2015-08-12T00:00:00Z Why do most known visual binaries have relatively long periods and most spectroscopic binaries have relatively short periods? Astronomy 2016-10-13T00:00:00Z Europe is launching a spacecraft, EnVision, to radar-map and gather spectroscopic measurements of the planet's surface and atmosphere. Signs of geological activity found on Venus 2021-06-22T04:00:00Z He envisions a handy, all-in-one spectroscopic tool that could one day characterize body fluid traces on the spot. New Blood Analyzer Tells Human from Animal Samples on the Spot 2021-05-13T04:00:00Z By now, airplanes, drones, and towers all provide spectroscopic data on vegetation. Satellites offer new ways to study ecosystems—and maybe even save them 2021-11-17T05:00:00Z Can the lines in a diffraction grating be too close together to be useful as a spectroscopic tool for visible light? College Physics for AP Courses 2015-08-12T00:00:00Z Today, spectroscopic analysis is one of the cornerstones of astronomical research. Astronomy 2016-10-13T00:00:00Z During an interview with Piel, Robert W. Wood of Johns Hopkins University fumed about a secret Manhattan Project that was placing heavy orders for his spectroscopic research equipment. How an Article about the H-Bomb Landed Scientific American in the Middle of the Red Scare 2020-08-21T04:00:00Z The researchers also studied spectroscopic features of different wavelengths of light from the star, which would show whether it was bursting with energy. Peaceful star is home to two intriguing planets 2020-06-24T04:00:00Z Normally, astronomers calculate the distance to another galaxy by finding its spectroscopic redshift—the amount by which the galaxy’s light is shifted toward the longer wavelengths of the red side of the spectrum. How Heavy is the Universe? Conflicting Answers Hint at New Physics 2020-05-12T04:00:00Z This notation, called spectroscopic notation, is generalized as shown in Figure 30.60. College Physics for AP Courses 2015-08-12T00:00:00Z A star like Mizar A, which appears as a single star when photographed or observed visually through the telescope, but which spectroscopy shows really to be a double star, is called a spectroscopic binary. Astronomy 2016-10-13T00:00:00Z It's about to be fitted with a new fibre-optic spectroscopic camera, able to capture the detailed colours of 2,400 objects simultaneously, over an area on the sky equivalent to 20 full Moons. Europe's telescopes 'can meet satellite challenge' 2020-03-05T05:00:00Z "We are exploring the consequences of a longer-term spectroscopic follow-up in another work we hope to publish soon." Possible 'Super-Earth' planet discovered nearly 4 light years away from Earth 2020-01-16T05:00:00Z Measuring individual spectroscopic redshifts, however, is extremely inefficient when dealing with millions of galaxies. How Heavy is the Universe? Conflicting Answers Hint at New Physics 2020-05-12T04:00:00Z They used the spectroscopic method but with special “muonic” hydrogen: instead of an electron, this atom contains a muon, a particle with about 200 times the mass of an electron. Ultraprecise Measurement Pinpoints the Proton’s Size 2019-11-27T05:00:00Z These curves plot the radial velocities of two stars in a spectroscopic binary system, showing how the stars alternately approach and recede from Earth. Astronomy 2016-10-13T00:00:00Z "We consider not only the spectroscopic potential of phosphine, but also its thermodynamic false positives, biochemical viability, and atmospheric survival." Extraterrestrials may spout out toxic gas as a sign of life, researchers suggest 2019-06-26T04:00:00Z A microplate reader automatically moves a multi-well plate relative to a spectroscopic sensor, to detect reactions by measuring fluorescence, for example. A DIY approach to automating your lab 2019-05-19T04:00:00Z The methods and tools that Li et al. used for the spectroscopic analyses were handled with great care, and the authors’ detection of the minerals is highly reliable. The Moon’s mantle unveiled 2019-05-14T04:00:00Z In the future, astronomers may establish an alert system that triggers follow-up spectroscopic observations to an impact by a meteor of possible interstellar origin. 'Oumuamua's Cousin? 2019-05-06T04:00:00Z Most spectroscopic binaries have periods ranging from a few days to a few months, with separations of usually less than 1 AU between their member stars. Astronomy 2016-10-13T00:00:00Z From spectroscopic measurements of the energy absorbed by the system, it was possible to learn the parameters of extremely rapid reactions. Manfred Eigen, Nobel-winning chemist who clocked the speeds of fast reactions, dies at 91 2019-02-10T05:00:00Z In 1898, they identified spectroscopic lines of two new elements — radium and polonium. Celebrate the women behind the periodic table 2019-01-27T05:00:00Z Writing in Nature, Izzo et al.3 report spectroscopic observations of a supernova associated with a γ-ray burst, improving our understanding of the interplay between the jet and the exploding stellar envelope. Heart of a stellar explosion revealed 2019-01-15T05:00:00Z This is known as the solar abundance problem, and calls into question the validity of the present models of stellar evolution, or of spectroscopic methods for determining the Sun’s composition, or both. Solar neutrinos reveal how the Sun shines 2018-10-23T04:00:00Z The discovery that Algol is a spectroscopic binary verified Goodricke’s hypothesis. Astronomy 2016-10-13T00:00:00Z And in 1972, thanks to his expertise in the spectroscopic study of magnetic materials, Grünberg was offered a post at the newly founded Institute for Magnetism at the Jülich Research Centre in Germany. Peter Grünberg (1939-2018) 2018-05-23T04:00:00Z The first step is finding unusual activity — chemical behaviour or physical properties that cannot be ascribed to known elements, such as unexplained radioactive emissions or spectroscopic lines. Celebrate the women behind the periodic table 2019-01-27T05:00:00Z The spectroscopic measurements break infrared light from Uranus into its component wavelengths. Rotten egg gas found on planet Uranus 2018-04-23T04:00:00Z Webb’s 6.5-metre primary mirror will allow detailed spectroscopic studies of the planets’ atmospheres, but it will be in high demand for a range of other astronomical research. NASA's Next Exoplanet Hunter Will Seek Worlds Close to Home 2018-04-06T04:00:00Z There are fewer eclipsing binaries than spectroscopic binaries. Astronomy 2016-10-13T00:00:00Z We confirm the non-trivial topological phase using spectroscopic measurements and by identifying corner states that result from the bulk topology. A quantized microwave quadrupole insulator with topologically protected corner states 2018-03-13T04:00:00Z Here we report a spectroscopic analysis of 14 stars from two stellar overdensities, each lying about five kiloparsecs above or below the Galactic plane—locations suggestive of an association with the stellar halo. Two chemically similar stellar overdensities on opposite sides of the plane of the Galactic disk 2018-02-25T05:00:00Z Such differences can, in turn, be probed spectroscopically by using a laser to excite the electrons and measuring the wavelengths at which they then emit light. Fundamental physics is frustrating physicists 2018-01-11T05:00:00Z A spectroscopic analysis showed, however, that all were precisely the same hue. Not all warning colouration signals toxicity 2017-12-19T05:00:00Z Which is easier to observe at large distances—a spectroscopic binary or a visual binary? Astronomy 2016-10-13T00:00:00Z Following the detection of this source, we started an imaging and spectroscopic follow-up campaign at optical and near-infrared wavelengths. Spectroscopic identification of r-process nucleosynthesis in a double neutron-star merger : Nature : Nature Research 2017-10-15T04:00:00Z The scientists subjected the concrete samples to a battery of advanced imaging techniques and spectroscopic tests. Ancient Romans made world’s ‘most durable’ concrete. We might use it to stop rising seas. 2017-07-04T04:00:00Z Preparative, spectroscopic and biological data associated with this compound are as reported in the Article, and the error does not influence any of the reported data or interpretations. Corrigendum: MTH1 inhibition eradicates cancer by preventing sanitation of the dNTP pool : Nature : Nature Research 2017-04-25T04:00:00Z Such observations are pushing the spectroscopic powers of even the Hubble Space Telescope to its limits. Seven potentially habitable Earth-sized planets spied around tiny nearby star 2017-02-22T05:00:00Z Figure 18.7 shows the velocity of two stars in a spectroscopic binary system. Astronomy 2016-10-13T00:00:00Z While they are falling, they can be detected individually by a laser, and then interrogated spectroscopically. Searching for particles on a benchtop 2017-01-26T05:00:00Z As a spectroscopic chemist, Dr. Kroto used electromagnetic radiation to reveal the structures of molecules. Harold Kroto, Nobel Prize-Winning Chemist, Is Dead at 76 2016-05-04T04:00:00Z He reasoned that when a planet 'transits', or passes in front of a star, molecules in its atmosphere will absorb some of the starlight, and leave their spectroscopic fingerprints in it. The truth about exoplanets 2016-02-16T05:00:00Z "But even if life is abundant in the cosmos, finding unambiguous spectroscopic evidence of it is a daunting task that lies in the indefinite future," Deming wrote. Closest Earth-Size Exoplanet Found May Be a Venus Twin 2015-11-12T05:00:00Z Our deep space telescope images show some galaxies that are 100 times fainter than the faintest objects that can be observed spectroscopically with today’s giant ground-based telescopes. Astronomy 2016-10-13T00:00:00Z Inside, samples of common table salt turned a yellowish-brown and developed spectroscopic features resembling those observed for Europa's brown gunk. Europa's "Brown Gunk" Suggests a Briny Sea 2015-07-29T04:00:00Z The next step is to use the James Webb Telescope to do a spectroscopic analysis of the planet to gain a better understanding of its atmosphere. NASA mission discovers 'older, bigger cousin' to Earth 2015-07-23T04:00:00Z It was both the first detection and the first spectroscopic measurement of an exoplanet atmosphere. The truth about exoplanets 2016-02-16T05:00:00Z Astronomers could then examine each targeted world for spectroscopic signatures of water vapor, greenhouse gases and “biosignatures” such as atmospheric oxygen, which on Earth is produced by photosynthesizing plants. Astronomers Seek Super-Size Hubble Successor to Search for Alien Life 2015-05-04T04:00:00Z “We were hoping it would kick up some soot for spectroscopic analysis,” says Messenger Principal Investigator Angra Mainyu, a planetary scientist at Columbia University. Aging space probe records odd emanations on Mercury 2015-04-01T04:00:00Z The device, called pd.id, relies on technology that has been used by the DEA for years, using a combination of electrical conductivity tests, temperature measurements and spectroscopic analysis to scan the molecular makeup of a liquid. New device tests drinks to see if they’ve been roofied 2014-07-22T04:00:00Z Astronomers have long hoped that spectroscopic observations of an exoplanet atmosphere might reveal the signatures of life, such as oxygen or chlorophyll. More Eyes on the Skies 2014-07-21T04:00:00Z If alien astronomers were trying to get a spectroscopic reading of Earth, she says, refraction would prevent them from probing any deeper than 10 kilometres from the surface6. The truth about exoplanets 2016-02-16T05:00:00Z He attended U.C.L.A. and then the University of California, Santa Cruz, where he earned a Ph.D. using spectroscopic measurements to study magnetic fields in stars. | Geoffrey W. Marcy: Finder of New Worlds 2014-05-12T21:37:37Z The British set to work using spectroscopic methods to identify the secret-ink substance. Invisible Ink War: How Chemists Revealed Germany’s Secret WW I Writing [Excerpt] 2014-04-05T11:30:00Z The catalytic mechanism is elucidated by the spectroscopic detection of iron hydride and amide intermediates. [Report] Amine(imine)diphosphine Iron Catalysts for Asymmetric Transfer Hydrogenation of Ketones and Imines 2013-12-04T22:56:21.447Z Follow-up spectroscopic observations of the supernova, which break light down to its constituent colors, reveal how much the light’s wavelength has been stretched by the expansion of the universe. Leading Dark Energy Theory Incompatible with New Measurement 2013-10-22T11:45:03.273Z For a while, attention switched to molybdenum, which chemists showed could also help to make ammonia, but biochemical and spectroscopic data have renewed the focus on iron. The nitrogen fix 2013-09-04T17:20:04.137Z As an undergraduate, I worked at the Lawrence Berkeley National Laboratory in California, taking spectroscopic measures of greenhouse gases. Turning point: Kevin Gurney 2013-08-07T17:51:17.300Z Even so, Hill’s own optical spectroscopic measurements using the Keck I several years later, found the inclination to be 30 to 40 degrees. Earth May Still Lie In Path Of Potential Gamma Ray Burst (GRB), Say Astronomers 2013-05-27T05:56:35Z Then there’s spectroscopic techniques, in which lasers are used to zap a sample, producing a signature that can be analyzed by a spectrometer. Physicists Tackle the Shrinking Proton Puzzle 2013-04-19T11:45:04.490Z He says he is inclined to trust Hipparcos's trigonometric parallax measurements as a more direct method of measurement over Turner's spectroscopic parallax. Polaris: Not So Close After All 2013-01-18T22:35:00Z At least that’s the conclusion reached in a forthcoming paper to be published by The Astrophysical Journal Letters, which details five years of spectroscopic observations of magnetic activity variations in the nearby star, Epsilon Eridani. Sun's Peculiar Rotation May Be One Key To Life's Evolutionary Longevity, New Observations Suggest 2012-12-31T04:47:20Z The crust’s chemical composition is known from the Apollo missions, and also from spectroscopic data. Mapping the Moon with gravity: GRAIL hunt 2012-12-19T16:07:14Z Size dispersion seems to be the primary limitation on achieving much narrower spectroscopic features. Controlled-reflectance surfaces with film-coupled colloidal nanoantennas 2012-12-11T21:22:39.403Z Since it is located only 20.3 light-years away - in the Constellation Libra - astronomers should be able to resolve some of these questions in the future, with direct spectroscopic observations of the planet's atmosphere. A home from home: Five planets that could host life 2012-07-28T00:51:23Z Fortunately we have several spectroscopic techniques to detect deuterium that include extremely sensitive mass spectrometry methods. Better (extraterrestrial) communication through chemistry: Isotopes and mirror-image molecules 2012-07-25T17:45:03.207Z Two other independent groups backed up that work with their own reported spectroscopic detections. Could a Whiff of Methane Revive The Exploration of Mars? 2012-06-21T19:10:58Z Taking spectroscopic measurements was a practice run for applying the same method to determining the atmospheric composition of exoplanets – planets that orbit stars other than the Sun. Venus' Transits Through History 2012-06-05T12:15:05.903Z The brighter component was found to be a spectroscopic binary by Wright, so that on the whole the star is a most interesting object. Astronomical Curiosities Facts and Fallacies 2012-03-27T02:00:18Z But the complete vindication of the spectroscopic method as an adjunct of the old astronomy came with its application to measurement of the distance of the sun. Astronomy: The Science of the Heavenly Bodies 2012-03-17T02:01:02.630Z These unexpected discoveries led to a study of the heavens from the spectroscopic point of view, which has resulted in a marvelous advance in the science of astronomy. Joseph Smith as Scientist A Contribution to Mormon Philosophy 2012-03-12T03:00:27.817Z In solar physics Huggins suggested a spectroscopic method for viewing the red prominences in daylight; and his experiments went far towards settling a much-disputed question regarding the solar distribution of calcium. Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 8 "Hudson River" to "Hurstmonceaux" 2012-02-24T03:00:27.173Z Hubble will use its advanced Camera for Surveys, Wide Field Camera 3, and Space Telescope Imaging Spectrograph to view the transit in a range of wavelengths and perform spectroscopic analysis. Venus' Transits Through History 2012-06-05T12:15:05.903Z It has recently been found to be a spectroscopic binary. Astronomical Curiosities Facts and Fallacies 2012-03-27T02:00:18Z Young's observations at Sherman were mainly spectroscopic, however, and they demonstrated the immense advantage of a high-level station, far above the dust and haze of the lower atmosphere. Astronomy: The Science of the Heavenly Bodies 2012-03-17T02:01:02.630Z Ex vivo spectroscopic measurements of choline-containing species and in vivo magnetic resonance measurements of diffusion parameters were also correlated with 2HG levels. [Research Articles] Magnetic Resonance of 2-Hydroxyglutarate in IDH1-Mutated Low-Grade Gliomas 2012-01-11T20:25:08.257Z Primarily it rests upon mechanics, and in its instrumental portion, upon optics; in its present development on the spectroscopic side, however, it borrows considerably of chemistry. International Congress of Arts and Science, Volume I Philosophy and Metaphysics 2011-12-12T03:00:31.160Z To gather evidence for or against this supposition, the chemist has been obliged to go from the earth to the heavens, he has been obliged to form a new science, the science of spectroscopic analysis. Heroes of Science Chemists 2011-12-09T03:00:21.047Z Of those V Puppis and β Lyræ are known spectroscopic binaries. Astronomical Curiosities Facts and Fallacies 2012-03-27T02:00:18Z In 1889 the spectroscope achieved an unexpected triumph by enabling the late Professor Pickering to make the first discovery of a spectroscopic double, or binary star, a type of object now quite abundant. Astronomy: The Science of the Heavenly Bodies 2012-03-17T02:01:02.630Z With a variety of spectroscopic tests, the researchers then measure the composition of the minerals within the impurities. In Diamonds? Flaws, Clues to Earth?s Carbon Cycle 2011-09-15T19:50:04Z Is not this a rational conclusion, since it has been demonstrated by universal chemistry and spectroscopic analysis that all laws, force and substance are the same in all suns and worlds and throughout the universe? The Universe a Vast Electric Organism 2011-06-09T02:00:22.450Z Its admirable equipment includes apparatus for the direct and spectroscopic study of the sun, for measuring solar radiation, atmospheric electricity, earth currents, terrestrial magnetism, and earthquakes; besides the ordinary routine of a meteorological observatory. The Mentor: The Weather Serial Number 110; 1 July, 1916 2011-06-09T02:00:19.213Z Thus the light curve and the spectroscopic velocity curve are very similar in shape, but one is like the other turned upside down. Astronomical Curiosities Facts and Fallacies 2012-03-27T02:00:18Z Many astronomers, Dun�r among them, investigated the rotation of the sun by the spectroscopic method. Astronomy: The Science of the Heavenly Bodies 2012-03-17T02:01:02.630Z The spectroscopic method of determining the speed of rotation has been equally indecisive. Are the Planets Inhabited? 2011-04-24T02:00:07.733Z Doppler's Principle, the principle by which the motions of heavenly bodies in the line of sight can be determined spectroscopically. The New Gresham Encyclopedia Volume 4, Part 1: Deposition to Eberswalde 2011-04-14T02:00:57.977Z For spectroscopic projections the carbons of the lamp have to be in vertical position. Microscopes and Accessory Apparatus Catalogue No. 40 2011-04-14T02:00:42.743Z Possibly its spectroscopic duplicity may have something to do with the variation in its light. Astronomical Curiosities Facts and Fallacies 2012-03-27T02:00:18Z In this way was discovered the dependence of their relative intensities on the star's absolute magnitude, so providing the powerful method of spectroscopic parallaxes. Astronomy: The Science of the Heavenly Bodies 2012-03-17T02:01:02.630Z Prof. Campbell estimates that fully one star in six is a spectroscopic binary. Are the Planets Inhabited? 2011-04-24T02:00:07.733Z Bohr did not derive electron configurations from quantum theory but obtained them from the known chemical and spectroscopic properties of the elements. The Evolution of the Periodic System 2011-01-21T23:45:05.210Z Attachment for spectroscopic examinations, to be used on the optical bench and in connection with the lamp of the projection apparatus No. 117. Microscopes and Accessory Apparatus Catalogue No. 40 2011-04-14T02:00:42.743Z Both components are spectroscopic binaries, and the system is a most interesting one. Astronomical Curiosities Facts and Fallacies 2012-03-27T02:00:18Z The history of the spectroscopic binaries is one of the most interesting chapters in astronomy, and affords a marvelous confirmation of the prediction of Bessel who first wrote of "the astronomy of the invisible." Astronomy: The Science of the Heavenly Bodies 2012-03-17T02:01:02.630Z That G. Newall’s spectroscopic photographs for rotation of the corona again gave no result is a clear indication of the faintness of the corona at 3′ from the limb; but F.W. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 10 "Echinoderma" to "Edward" 2011-01-19T03:00:19.027Z They may be there, probably are there, but the spectroscopic proof of their presence is more difficult to obtain. A Text-Book of Astronomy 2011-01-05T03:00:57.347Z Another more accurate way is by spectroscopic measurements of the wavelength of the light emitted as electrons in the atom jump from one orbit to another and using quantum theory to compute the proton’s properties. For a Proton, a Little Off the Top (or Side) Could Be Big Trouble 2010-07-12T21:25:00Z Some recent spectroscopic observations seem to favour the short period. Astronomical Curiosities Facts and Fallacies 2012-03-27T02:00:18Z To test this relation, the spectroscopic parallaxes have been compared with the measured parallaxes in numerous instances, and an excellent agreement is shown. Astronomy: The Science of the Heavenly Bodies 2012-03-17T02:01:02.630Z Consequently many observations, in addition to those in Labrador, were lost, notably the special spectroscopic observations undertaken by Evershed on the northern limit of totality, and the observations of radiation undertaken by H.L. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 10 "Echinoderma" to "Edward" 2011-01-19T03:00:19.027Z The bright star Capella is an excellent illustration of these spectroscopic binaries. A Text-Book of Astronomy 2011-01-05T03:00:57.347Z He employed in his discussion the radial velocities of 280 stars, spectroscopically Astrophysics. determined; and the upshot signally exemplified the community of interests between the rising science of astrophysics and the ancient science of astrometry. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 7 "Arundel, Thomas" to "Athens" Every physical laboratory may thus produce its own spectroscopic gratings, rectilinear, circular, or of any desired form. The Mechanism of Life Capella has been found to be a spectroscopic binary; also the pole star. Astronomy: The Science of the Heavenly Bodies 2012-03-17T02:01:02.630Z "Couldn't we tell by spectroscopic analysis?" said Ken. The Year When Stardust Fell The arrows shown in Fig. 130 are a feature not usually found with light curves, but in this case each one represents a spectroscopic determination of the motion of Algol in the line of sight. A Text-Book of Astronomy 2011-01-05T03:00:57.347Z That had been based on spectroscopic analyses at 40 to 60 million miles' distance, which isn't close enough for any certainty. Stamped Caution To make a spectroscopic grating by diffusion we proceed as follows. The Mechanism of Life The spectroscopic evidence of water vapor in the Martian atmosphere is not very strong. Astronomy: The Science of the Heavenly Bodies 2012-03-17T02:01:02.630Z Until the opportunity is offered, the conclusions to be derived from spectroscopic observation cannot be further extended. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 7 "Columbus" to "Condottiere" But these dimensions and masses perhaps require confirmation, since they depend upon spectroscopic observations of doubtful interpretation. A Text-Book of Astronomy 2011-01-05T03:00:57.347Z Moreover, the spectroscopic lines are defined with wonderful distinctness. Etna A History of the Mountain and of its Eruptions They have the same structure and the same chemical composition; they have the same physical properties, the glow, the fire, and the brilliancy of our spectroscopic gratings. The Mechanism of Life Recent spectroscopic observations of the nebul� applying the principle of Doppler have revealed high velocities of rotation. Astronomy: The Science of the Heavenly Bodies 2012-03-17T02:01:02.630Z No estimate can be formed of the ratio between these two kinds of light until a bright comet shall be spectroscopically observed during an entire apparition. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 7 "Columbus" to "Condottiere" The purity of the compounds thus obtained is checked by spectroscopic observations. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" The famous "Blue Grotto" in the island of Capri, Italy, has been investigated spectroscopically. The Galaxy, Volume 23, No. 2, February, 1877 It is easy to construct a spectroscopic grating in this way with fine lines whose distance apart is of the order of a micron, separated by clear spaces. The Mechanism of Life Campbell and Moore have found spectroscopic evidence of internal rotatory motion in a large proportion of the planetary nebul�. Astronomy: The Science of the Heavenly Bodies 2012-03-17T02:01:02.630Z The foundation-stone of that work is spectroscopic study of the sun and stars. A History of Science, Volume 5(of 5) Aspects Of Recent Science Our spectroscopic tests had revealed the presence of atmosphere suitable for breathing, although strongly laden with mineral fumes which, while possibly objectionable, would probably not be dangerous. Astounding Stories, April, 1931 According to its orbit and location, and the spectroscopic table of its mineral resources, it was a choice planetoid indeed. The Planetoid of Peril There is good spectroscopic evidence that in some way elements of different kinds are now being formed in nebul�, for the simplest show the presence of hydrogen alone. The Machinery of the Universe Mechanical Conceptions of Physical Phenomena For the spectroscopic binaries the masses are much greater. Astronomy: The Science of the Heavenly Bodies 2012-03-17T02:01:02.630Z "There is nothing remarkable about the discovery of a new element by the spectroscopic method," replied Dr. Bird. Astounding Stories of Super-Science April 1930 Rick wasn't skilled enough to use the delicate spectroscopic wave analyzer as yet and Hartson Brant was busy with a problem in the library and couldn't be disturbed. Smugglers' Reef Castor belongs to the same general spectroscopic type in which Sirius is found, but its lines of hydrogen are broader than those seen in the spectrum of the Dog Star. Pleasures of the telescope An Illustrated Guide for Amateur Astronomers and a Popular Description of the Chief Wonders of the Heavens for General Readers The direct result of the observations made on this occasion was the spectroscopic method of examining prominences at any time in full daylight, and without a total eclipse. Astronomy of To-day A Popular Introduction in Non-Technical Language Adams and Joy have recently determined the luminosities and parallaxes of 500 stars by this spectroscopic method. Astronomy: The Science of the Heavenly Bodies 2012-03-17T02:01:02.630Z By the spectroscopic analysis of their light it has been ascertained that the elements of matter which enter into their composition exist in a condition similar to what is found in the Sun. The Astronomy of Milton's 'Paradise Lost' Here then we have the criterion that was wanted—the means of distinguishing, spectroscopically and chemically, between the cavity and the absorbing layers piled up above it. A Popular History of Astronomy During the Nineteenth Century Fourth Edition Of course, Dr. See has no reference in this statement to the immense dark bodies which, in recent years, have been discovered by spectroscopic methods revolving around some of the visible stars, although invisible themselves. Pleasures of the telescope An Illustrated Guide for Amateur Astronomers and a Popular Description of the Chief Wonders of the Heavens for General Readers Such connected pairs of stars, since they cannot be seen separately by means of any telescope, no matter how large, are known as "spectroscopic binaries." Astronomy of To-day A Popular Introduction in Non-Technical Language A definitive scale for the spectroscopic determination of absolute magnitudes has now been established, and the parallaxes and absolute magnitudes have already been derived for about 1,800 stars. Astronomy: The Science of the Heavenly Bodies 2012-03-17T02:01:02.630Z The time is coming when all these mysteries are to be cleared up—it will be when Psychometry is added to our telescopic and spectroscopic methods. Buchanan's Journal of Man, January 1888 Volume 1, Number 12 For more than a score of years it held its ground as the universal standard of reference in all spectroscopic inquiries within the range of the visible emanations. A Popular History of Astronomy During the Nineteenth Century Fourth Edition Its spectrum during the first period of its visibility had been carefully studied, so that the means existed for making a spectroscopic comparison of the phenomenon in its two phases. Pleasures of the telescope An Illustrated Guide for Amateur Astronomers and a Popular Description of the Chief Wonders of the Heavens for General Readers In observations of spectroscopic binaries we do not always get a double spectrum. Astronomy of To-day A Popular Introduction in Non-Technical Language By the spectroscopic method the proportion is not so large; Campbell finding that about one quarter of 1,600 stars examined are spectroscopic binaries, and Frost two-fifths to a half. Astronomy: The Science of the Heavenly Bodies 2012-03-17T02:01:02.630Z The method employed for the spectroscopic determination of the motion of a star in the line of sight is the same as the method we have described in the chapter on the sun. The Story of the Heavens Nor are there wanting spectroscopic indications of its physical connection with the stars visually involved in it. A Popular History of Astronomy During the Nineteenth Century Fourth Edition With the aid of the map we find the position of the new star of 1866, which is famous as the first so-called temporary star to which spectroscopic analysis was applied. Pleasures of the telescope An Illustrated Guide for Amateur Astronomers and a Popular Description of the Chief Wonders of the Heavens for General Readers Campbell, Director of the Lick Observatory, estimates, for instance, that, out of about every half-a-dozen stars, one is a spectroscopic binary. Astronomy of To-day A Popular Introduction in Non-Technical Language The problem of spectroscopic determinations of luminosity and parallax has been investigated at Mount Wilson with great thoroughness from all sides, the separate investigations checking each other. Astronomy: The Science of the Heavenly Bodies 2012-03-17T02:01:02.630Z An interesting application of this beautiful method of measuring the speed of moving bodies has been made in various attempts to determine the period of rotation of the sun spectroscopically. The Story of the Heavens Of many ingenious improvements in spectroscopic appliances the most fundamentally important relate to what are known as "gratings." A Popular History of Astronomy During the Nineteenth Century Fourth Edition In 1899 it was discovered by spectroscopic evidence that the Pole Star is triple. Pleasures of the telescope An Illustrated Guide for Amateur Astronomers and a Popular Description of the Chief Wonders of the Heavens for General Readers Most of the spectroscopic binaries appear to be upon a smaller scale than the telescopic ones. Astronomy of To-day A Popular Introduction in Non-Technical Language When spectroscopic methods were first introduced into astronomy, there was no expectation that the field of the old or so-called exact astronomy would be invaded. Astronomy: The Science of the Heavenly Bodies 2012-03-17T02:01:02.630Z This was the first new star which was spectroscopically examined. The Story of the Heavens And so fully is it compensated by the great light-grasping power of modern telescopes that important information can now be gained from the spectroscopic examination of stars far below the range of the unarmed eye. A Popular History of Astronomy During the Nineteenth Century Fourth Edition It may be well, however, before describing it, to indicate in a few words the meaning of various kinds of spectroscopic evidence. Myths and Marvels of Astronomy Our proofs of this rotation are still further strengthened by the Doppler spectroscopic method of observation alluded to in Chapter XI. Astronomy of To-day A Popular Introduction in Non-Technical Language They will watch the flash through their lunar telescopes and get a—what do they call it?—a spectroscopic analysis. Earthmen Bearing Gifts The following day it was again visible to the naked eye in full daylight, not far from the sun, and valuable spectroscopic observations were secured at Dunecht and Palermo. The Story of the Heavens Definite knowledge on the subject, however, made little advance beyond the point to which it was brought by Huggins's early experiments until spectroscopic photography became thoroughly effective as a means of research. A Popular History of Astronomy During the Nineteenth Century Fourth Edition These two observers at once directed their telescope armed with spectroscopic adjuncts—the telespectroscope is the pleasing name of the compound instrument—to the new-comer. Myths and Marvels of Astronomy From the kinetic theory, therefore, one would not expect to find any atmosphere on the rings, and the absence of it is duly shown by spectroscopic observations. Astronomy of To-day A Popular Introduction in Non-Technical Language The hard atom, however, seems to be refuted by spectroscopic analysis, which reveals to us in a manner that has never been revealed before, something of the sizes and vibrations of atoms. Aether and Gravitation These were doubtless two of the reasons which combined to inspire the elaborate preparations which were made for photographic and spectroscopic observations. The Story of Eclipses This new class of "spectroscopic binaries" could never have been visually disclosed. A Popular History of Astronomy During the Nineteenth Century Fourth Edition For instance, traces of sodium are generally present, and lithium was found in large spectroscopic quantity in five out of six samples of the purest crystals in my laboratory. On Laboratory Arts We are told that according to Capron's spectroscopic observations the phenomenon was nothing but a beam of auroral light. The Book of the Damned So that spectroscopic results seem to confirm this hypothesis, as the pure Aether that would surround every star, or multiples of stars, would certainly not reveal any dark lines by means of the spectroscope. Aether and Gravitation Mr. Perry conducted on this occasion spectroscopic observations for the first time on an eclipsed Moon, but no special results were obtained. The Story of Eclipses The anomaly of seeming nebular fixity has nevertheless been removed; and the problem of nebular motion has begun to be solved through the demonstrated possibility of its spectroscopic investigation. A Popular History of Astronomy During the Nineteenth Century Fourth Edition So small a parallax value is of little reliability when it is directly computed from annual parallax observations, but is more trustworthy when derived with the spectroscopic method of Adams. Lectures on Stellar Statistics Two volumes of the Publications of the Astronomical Observatory, dealing with the spectroscopic investigations for which the Observatory is now particularly well equipped, have also appeared. The University of Michigan Through the spectroscopic examination of certain minerals a number of elements have been discovered by the observation of lines which did not belong to any known element. An Elementary Study of Chemistry There is a green star called Meristem, and a spectroscopic analysis of that star, I'm sure, will reveal what unknown elements it contains, and perhaps locate other stars with that element. The Colors of Space To Father Secchi is due the merit of having executed the first spectroscopic survey of the heavens. A Popular History of Astronomy During the Nineteenth Century Fourth Edition Through the spectroscopic method of Adams it will be possible to enlarge this number considerably, so that the distance of all stars, for which the spectrum is well known, may be determined with fair accuracy. Lectures on Stellar Statistics This star was one of the first discovered and most remarkable "spectroscopic binaries." A Field Book of the Stars For a long time we had been able to see that Rigel, as inferred from spectroscopic evidence, was a double star—a fainter, greener blue companion revolving with it around their common center of gravity. Out Around Rigel This range of colours, produced by the spectroscope, we call the solar spectrum, and these are, from the spectroscopic point of view, primary colours. The Outline of Science, Vol. 1 (of 4) A Plain Story Simply Told The earliest comet of first-class lustre to present itself for spectroscopic examination was that discovered by Coggia at Marseilles, April 17, 1874. A Popular History of Astronomy During the Nineteenth Century Fourth Edition Messrs. Huggins, Vogel, and others have believed that they found spectroscopic proof of the existence of both air and the vapor of water on Mercury. Other Worlds Their Nature, Possibilities and Habitability in the Light of the Latest Discoveries Our spectroscopic astronomy—so far as it refers to the composition of the sun and moon—would stand precisely where it does, but the bulk of our mathematical astronomy would not exist. Certain Personal Matters It is chiefly remarkable for the close spectroscopic analysis to which it has been subjected by Messrs. Huggins and Miller. Half-hours with the Telescope Being a Popular Guide to the Use of the Telescope as a Means of Amusement and Instruction. It should also show itself in the measures of all spectroscopic binaries. The Future of Astronomy Since no universally valid measures can be made in any others, their production is quite indispensable to spectroscopic science. A Popular History of Astronomy During the Nineteenth Century Fourth Edition Upon the whole, probably the best method of settling the question of Venus's rotation is the spectroscopic method, and that, as we saw, has already given evidence for the short period. Other Worlds Their Nature, Possibilities and Habitability in the Light of the Latest Discoveries Its sole spectroscopic line is believed to be that of glowing nitrogen gas. Recreations in Astronomy With Directions for Practical Experiments and Telescopic Work The spectroscopic reaction which we may use in the course of this separation is a thousand times less sensitive than observation of the activity by means of the electrometer. The New Physics and Its Evolution And I may add here that Dawes recommends a small aperture for sun work, including spectroscopic examinations, he himself, like Mr. Miller, our librarian, preferring to use for that purpose a four inch refractor. Scientific American Supplement, No. 832, December 12, 1891 In this case, accordingly, the tell-tale spectroscopic variations consist merely in a slight swinging to and fro of single lines. A Popular History of Astronomy During the Nineteenth Century Fourth Edition Dr. Huggins is one of the most eminent astronomers of the present day, and his spectroscopic researches on the celestial bodies have had the most important results. Scientific American Supplement No. 819, September 12, 1891 They comprise laboratories devoted to chemistry, mineralogy, metallurgy, and industrial chemistry; there are also microscopic, spectroscopic, and organic laboratories. Scientific American Supplement, No. 446, July 19, 1884 Then he replaced one of the objectives by a spectroscopic attachment, and having placed the little lamp close to the microscope mirror, adjusted the spectroscope. The Red Thumb Mark The experiments determined on included an analysis of the proportion of carbonic acid gas at different heights by means of special apparatus; spectroscopic observations, and the readings registered by certain barometers and thermometers. The Dominion of the Air; the story of aerial navigation Certain spectroscopic coincidences, avowedly only approximate, suggesting that stars and nebulæ of every species might be formed out of variously aggregated meteorites, failed of verification by exact inquiry. A Popular History of Astronomy During the Nineteenth Century Fourth Edition After making spectroscopic examinations of all the colored glasses which were available, I decided that only the ruby glass could be satisfactorily used in my experiments. The Dancing Mouse A Study in Animal Behavior Refined spectroscopic analysis of light is now made so that when any material burns, no matter what its distance, its spectrum tells what substance is burning. Scientific American Supplement, No. 288, July 9, 1881 Quite lately Halm, at the Cape of Good Hope, measured spectroscopically the velocity of the earth to and from a star by observations taken six months apart. History of Astronomy It thus appears that spectroscopic observations are quite accordant with the calculations founded on the molecular theory of gases as to the absence of aqueous vapour, and therefore presumably of liquid water, from Mars. Is Mars habitable? A critical examination of Professor Percival Lowell's book "Mars and its canals," with an alternative explanation Now all these bodies had kept at a respectful distance from the sun; for of the great comet of 1880 no spectroscopic inquiries had been made. A Popular History of Astronomy During the Nineteenth Century Fourth Edition Marks have been prepared for examination of the scale, but I have not yet had opportunity of trying it.—The spectroscopic determination of Star-motions has been steadily pursued. Autobiography of Sir George Biddell Airy The eye is applied to the spectroscopic end of the complex arrangement to watch the development of solar hurricanes. Scientific American Supplement, No. 288, July 9, 1881 Uranus and Neptune are difficult to observe spectroscopically, but appear to have peculiar spectra agreeing together. History of Astronomy The spectroscopic method of observing starlight was used by Secchi as early as by any astronomer. Maria Mitchell: Life, Letters, and Journals A similar observation, made by M. Thollon at Nice on the same day, gave emphatic sanction to the spectroscopic method of estimating movement in the line of sight. A Popular History of Astronomy During the Nineteenth Century Fourth Edition The wonderful transformations just described had been forecast in advance of the discovery of the nebulous spiral encircling the star by the spectroscopic study of the latter. Curiosities of the Sky The spectroscopic observations made by Mr. Huggins on the light of three comets show that a certain portion, at least, of the light of these objects is inherent. Ragnarok : the Age of Fire and Gravel A great deal has to be done by the chemist before the astronomer can be on sure ground in drawing conclusions from certain portions of his spectroscopic evidence. History of Astronomy I must leave it to others to describe the progress of that splendid series of spectroscopic discoveries by which the chemistry of the heavenly bodies has been brought within the range of human inquiry. Five of Maxwell's Papers All are comprehended in this one group by Moses, and recent spectroscopic investigations teach us that one general character pervades the whole. Story of Creation as Told By Theology and By Science So the curious spectroscopic observations before mentioned were explained. Curiosities of the Sky It is very curious that, among the many thousands of stars which have been spectroscopically examined, no two are known to have absolutely the same physical constitution. Side-Lights on Astronomy and Kindred Fields of Popular Science This star, which is the Algol variable V Puppis, has been found to be a spectroscopic binary. Darwin and Modern Science We know by spectroscopic analysis that hydrogen, iron, magnesium, and all our best-known substances exist in the sun, and even the stars, while the earth contains everything we have found in meteorites. A journey in other worlds A romance of the future The coincidence between the spectroscopic and the photometric evidence permits us to feel complete confidence in the theory of eclipses. Darwin and Modern Science By that hypothesis the expanding billow of light surrounding the core of the conflagration is very well accounted for, and the spectroscopic peculiarities are also explained. Curiosities of the Sky Again, spectroscopic examinations seem to show that all the stars are in motion, and that we cannot say that those in one part of the universe move more rapidly than those in another. Side-Lights on Astronomy and Kindred Fields of Popular Science Still more recently, he has collected the alpha-particles shot through an extremely thin wall of glass, and demonstrated by direct spectroscopic evidence the presence of helium. Darwin and Modern Science As the star is faint, there is as yet no direct spectroscopic evidence of orbital motion. Darwin and Modern Science The matter rested thus for some months until the spectroscopic evidence was re-examined by Miss Cannon on behalf of Professor Pickering, and we find in the notes on page 177 of Vol. Darwin and Modern Science The spectroscopic method has been successfully applied in this case, and the component stars are proved to move in an orbit about one another. Darwin and Modern Science But the results of spectroscopic measurements of radial velocity are independent of the distance of the star. Side-Lights on Astronomy and Kindred Fields of Popular Science |
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