| 单词 | frictional |
| 例句 | This was caused by little pieces of our heat shield burning up and coming off, as it was supposed to do, to protect us from the searing frictional heat. Flying to the Moon: An Astronaut's Story 1976-01-01T00:00:00Z There are lots of designer brands name-checked, and the titles of her songs – Royals, Tennis Court, Million Dollar Bills – suggest a frictional relationship with the high life. New band of the day: Lorde (No 1,528) 2013-06-07T11:59:22Z But while Bale takes the role by the throat, as is his habit, investing the character with frictional intensity, Gorr proves disappointingly dull. ‘Thor: Love and Thunder’ Review: A God’s Comic Twilight 2022-07-07T04:00:00Z Wittgenstein wrote about this with what looks like staggering foresight in 1930: that in a time of cultural impoverishment, “the strength of the individual is wasted through the overcoming of opposing forces & frictional resistances.” Review: In ‘Do Not Say We Have Nothing,’ a Portrait of Souls Snuffed Out 2016-10-23T04:00:00Z A more recent trend, however, has been to investigate systems whose frictional response can be dynamically tuned in situ, especially as micro- and nanoscale devices become more common. Researchers dynamically tune friction in graphene 2023-09-28T04:00:00Z Thus, two opposing forces act on a cat during a fall: the gravitational force Fg and the frictional force FR, which slows it down. Why Do Cats Land on Their Feet? Physics Explains 2023-07-24T04:00:00Z Orbiting near Ganymede and Europa, two of the other largest Jovian moons, and the planet itself, Io’s mineral composition is constantly pulled and pushed by gravity, creating frictional heat deep inside the moon. A New View of the Most Explosive Moon in the Solar System 2023-01-25T05:00:00Z In the past few years, the Bristol researchers found that insects did not just pick up charge while flying but also by rubbing against each other and walking on frictional surfaces. There’s Lightning Brewing in Every Swarm of Insects 2022-10-26T04:00:00Z However, the dart is 10 cm long and feels a frictional force of 10 N while going through the dart gun’s barrel. College Physics for AP Courses 2015-08-12T00:00:00Z If the radius of the turn is 70 ft, what is the required frictional force to keep the car from skidding? Calculus, Volume 3 2016-03-30T00:00:00Z At the beginning of the fall, the cat has a velocity of zero, so only the acceleration caused by gravity acts on it, but as v increases, the opposite frictional force then makes itself felt. Why Do Cats Land on Their Feet? Physics Explains 2023-07-24T04:00:00Z The increase in pore pressure decreases the frictional forces that keep rocks from sliding past each other, essentially lubricating fault planes. An Introduction to Geology 2017-01-01T00:00:00Z In a sense, this approach avoids any “frictional heating” in the process but at the cost of taking infinitely long to complete the calculation. ‘Momentum Computing’ Pushes Technology’s Thermodynamic Limits 2022-03-29T04:00:00Z Given that the force constant of the spring is 50 N m-1 and the frictional force between the objects is 0.294 N. College Physics for AP Courses 2015-08-12T00:00:00Z "The spike in the unemployment rate confirms that there will be some frictional unemployment through the next couple of months," said Sarah Hunter, Chief Australia Economist for BIS Oxford Economics. Australia jobs take shock fall in Oct, unemployment jumps 2021-11-11T05:00:00Z But at greater fall heights, the frictional force becomes noticeable during the fall. Why Do Cats Land on Their Feet? Physics Explains 2023-07-24T04:00:00Z Over hundreds to thousands of years, stress builds up along the fault until it overcomes frictional resistance, rupturing the rock and initiating fault movement. An Introduction to Geology 2017-01-01T00:00:00Z “We see a growing polarization of society, aggressive debates, an extremely frictional and inflammatory dimension,” said Bruno Cautrès, a political scientist at the Center for Political Research at Sciences Po university in Paris. French Far Right Is Dealt a Setback in First Round of Regional Elections 2021-06-20T04:00:00Z The frictional forces in joints are relatively small in all circumstances except when the joints deteriorate, such as from injury or arthritis. College Physics for AP Courses 2015-08-12T00:00:00Z Water is more viscous than air, and so underwater creatures must overcome strong frictional resistance as they swim. Jellyfish Build Walls of Water to Swim Around the Ocean 2021-01-07T05:00:00Z The crucial factor is the rock's frictional strength - the force needed to cause movement along a fault. New equation ‘could predict earthquakes better’ 2020-07-12T04:00:00Z This movement is caused by frictional drag created between the plates and differences in plate densities. An Introduction to Geology 2017-01-01T00:00:00Z Although hype and secrecy muddy the picture, all three nations appear to have made substantial progress in overcoming key obstacles, such as protecting hypersonic craft from savage frictional heating. ‘National pride is at stake.’ Russia, China, United States race to build hypersonic weapons 2020-01-08T05:00:00Z Increased frictional forces can cause further damage and pain. College Physics for AP Courses 2015-08-12T00:00:00Z For example, the development of elevated topography in the overriding plate increases the frictional resistance of the plate interface, and therefore reduces plate velocities11,12. Role of major erosion events in Earth’s dynamics 2019-06-04T04:00:00Z The problem is that such a system incurs higher frictional losses than a typical part-time, on-demand AWD system, and that reduces mileage. 2019 Subaru Forester: Do You Want Your Car to Spy on You? 2018-11-09T05:00:00Z Economists divide the reasons people are unemployed into five reasons: cyclical, structural, seasonal, frictional and institutional. Why the unemployment rate will never get to zero percent — but it could still go a lot lower 2018-09-30T04:00:00Z In the minutes and hours that followed, the frictional heating from debris falling back into the atmosphere was so intense that “the sky became an oven,” MacLeod said. The catastrophe that killed the dinosaurs created a global hothouse for 100,000 years, study says 2018-05-24T04:00:00Z This is not a large frictional force for such a massive system. College Physics for AP Courses 2015-08-12T00:00:00Z Intentionally slipping and sliding, the frictional juxtapositions open up possibilities for unexpected meaning. In these two art shows, the political is personal for our post-Women's March country – Los Angeles Times 2018-01-03T05:00:00Z What’s left is what economists call “frictional,” or people changing jobs, certain sectors contracting while others grow, and the unemployment rate mostly shows people in transition to the next workplace. A look at who’s left out in workforce 2017-07-01T04:00:00Z When an individual encounters environmental stressors, this frictional stress can cause a personality to experience disintegrative forces that can cause angst. What Does It Take to Climb Up the Ladder? 2017-03-23T04:00:00Z It is thought that the natural rate depends mostly on what economists label “frictional unemployment”. The definition of “maximum employment” needs updating 2017-01-26T05:00:00Z The currents in these “starter motors” are fairly large because large frictional forces need to be overcome when setting something in motion. College Physics for AP Courses 2015-08-12T00:00:00Z It’s clear now that the lander entered the Martian atmosphere as planned, its heat shield protecting it from the severe frictional heat while it was slowing down. Mission team still upbeat as Europe's Mars lander remains silent 2016-10-20T04:00:00Z Maher says the particles found are "strikingly similar" to magnetite nanospheres abundant in airborne pollution found next to busy roads, formed by combustion or frictional heating from vehicle engines or brakes. Possible air pollution link to Alzheimer's 2016-09-14T04:00:00Z That reflects people who have lost or left jobs and are in the process of moving to another, otherwise known as frictional unemployment. ‘Full Employment’ a misleading term 2016-07-02T04:00:00Z For a portion of the workforce there is a gap between one and the other—frictional unemployment. The definition of “maximum employment” needs updating 2017-01-26T05:00:00Z This is not a large frictional force for such a massive system. College Physics for AP Courses 2015-08-12T00:00:00Z “It is the same idea with faults. Faults are accumulating stress at different rates, they have different frictional thresholds. And the closer they are together the more likely they are to influence each other.” Earthquake threat to California may be greater than thought, warn scientists 2016-03-11T05:00:00Z But for all the frictional heat of the “Never Trump” movement, it has neither settled on a candidate nor committed to a cause. No One Here Can Save the G.O.P. 2016-03-04T05:00:00Z “The challenges are the frictional costs, getting things set up, getting permits, moving material between states.” Finalists For the TIME India Awards Are Announced 2016-01-21T05:00:00Z Eventually you will be able to get more and more information by looking at frictional qualities of the rocks. Why it is so hard to get an earthquake warning system 2015-10-30T04:00:00Z Note that the direction of the frictional force is unspecified; it will be in the opposite direction of the sum of F1 and F2 . College Physics for AP Courses 2015-08-12T00:00:00Z In physics the frictional force between two surfaces is determined by something called the coefficient of friction. Phone Book Friction 2015-10-22T04:00:00Z Try pulling apart two interleaved phone books and you’ll inevitably be defeated by huge frictional forces. Physics Week in Review: August 22, 2015 2015-08-22T04:00:00Z And that's why reducing the negative impact of trading commissions, fund fees and other frictional costs is something the prudent investor carefully does. Portfolio Analysis: a Hyper-Aggressive $1.29 Million Portfolio With Holes 2015-07-14T04:00:00Z The prudent investor takes deliberate steps to minimize the negative impact of trading commissions, fund fees and other frictional costs to the greatest degree possible. Portfolio Analysis: a $1.31 Million Portfolio That Flunks on Cost and Risk 2015-06-25T04:00:00Z Figure 5.6 The tip of a probe is deformed sideways by frictional force as the probe is dragged across a surface. College Physics for AP Courses 2015-08-12T00:00:00Z So, there’s some non-zero number for frictional employment and that’s really another name, or very close to it, for our Nairu. What The Heck Is Nairu When It's At Home And Why Is It Important? 2015-03-07T05:00:00Z In fact, we generally think that as various jobs become ever more specialised that this level of frictional unemployment will increase. If We Knew Why WalMart Raised Wages Then We Could Decide Upon The Minimum Wage 2015-02-20T05:00:00Z Here you have to overcome not only the rolling resistance but the frictional resistance of the ball bearings due to the fact the grease had solidified. How easy is it to push a plane? 2014-11-27T05:00:00Z In the study, a brave volunteer stepped on 12 different banana skins as well as apple peels and tangerine skins, while the authors measured the frictional forces at play. Ig Nobel prizes provide fun fodder online 2014-09-30T04:00:00Z Figure 6.11 The frictional force supplies the centripetal force and is numerically equal to it. College Physics for AP Courses 2015-08-12T00:00:00Z More valuable insights came from scientists in Japan who noted the status of the banana skin as an object upon which to slip and duly investigated its frictional properties. Ig Nobels: British researchers take coveted science humour prize 2014-09-18T04:00:00Z These three forces all conspire to constrain the number of new startups by keeping the frictional startup costs and barriers to entry relatively high. Startups, Exits, And Ecosystem Flux: Bullish For Biotech 2014-09-08T04:00:00Z In one area surprisingly close to the surface, researchers found signs that the frictional force from a past quake heated a thin band of rock to nearly 600 degrees. Deep mission: Japan takes aim at the source of megaquakes 2014-08-31T04:00:00Z The analysis revealed why the fault was so weak — it consisted of fine clay sediments, which offer little frictional resistance, and was very thin. Decoding a Tsunami’s Source 2013-12-09T23:04:33Z You may neglect frictional losses in both parts of the problem. College Physics for AP Courses 2015-08-12T00:00:00Z The frictional resistance on a fault during slip controls earthquake dynamics. [Report] Low Coseismic Friction on the Tohoku-Oki Fault Determined from Temperature Measurements 2013-12-05T18:57:04.154Z The mechanics of great subduction earthquakes are influenced by the frictional properties, structure, and composition of the plate-boundary fault. [Report] Structure and Composition of the Plate-Boundary Slip Zone for the 2011 Tohoku-Oki Earthquake 2013-12-05T18:56:50.987Z Using a technique called atomic force microscopy, scientists measured how the orientation of single atoms plays a crucial role in determining the strength of frictional forces between two materials. Why Friction Is a Drag: New Findings 2013-09-24T21:45:10.800Z By measuring how the temperature fell over the nine months the sensors were in place, and working backward in time, they were able to determine how much frictional heat was generated in the earthquake. Decoding a Tsunami’s Source 2013-12-09T23:04:33Z Chemical reactions that are related to frictional wear can also occur between atoms and molecules on the surfaces. College Physics for AP Courses 2015-08-12T00:00:00Z Earthquakes normally occur as frictional stick-slip instabilities, resulting in catastrophic failure and seismic rupture. [Report] Slow Earthquakes, Preseismic Velocity Changes, and the Origin of Slow Frictional Stick-Slip 2013-09-12T17:57:04.127Z It would also need a power source, as frictional forces would sap its spin, and the whole station would need to be strong enough to prevent it from flying apart under the constant rotation. How Elysium is a Carnival Ride, and Why its Atmosphere is a Bucket of Water 2013-08-15T18:45:00.960Z Much like how your car’s brake pads work, Fred’s feet absorb all the frictional forces until the stones stop rolling. The Physics of Fred Flintstone s Flaming Feet 2013-04-22T17:15:02.593Z The frictional heat from all that warping gets released through volcanic eruptions. Planetary science: Caught in the act 2013-01-30T18:21:07.040Z If an ice cube is rubbed against a rough surface, work is done by the frictional force. College Physics for AP Courses 2015-08-12T00:00:00Z The surface tension then pulls the sand particles together to develop the frictional strength that makes the castle stand up. Letters: Something New, Please (1 Letter) 2012-08-20T22:34:23Z If it's not flat-out slippery — down to the last rivet and seam being smoothed away — you may experience too much drag and generate too much frictional heat to survive. North Korea's Space Threat: It's Scarier Than You Think 2012-05-03T11:00:00Z The generation of heat in the conductor seems to be due to some kind of frictional action of particles of the conductor set up by the penetration of the Faraday tubes into it. Lord Kelvin An account of his scientific life and work 2012-04-06T02:00:32.097Z I might take a familiar appliance, a Leyden jar, charge it from a frictional machine, and then discharge it. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z The frictional roller is 6 inches in diameter, the pressure amounts to 1 cwt. on each step. Modern Machine-Shop Practice, Volumes I and II 2012-03-23T02:00:33.140Z From these numbers, the researchers calculated how much frictional drag the droplets experience. Rainfall Dissipates Energy via Friction with Air 2012-02-23T23:15:05.473Z Faraday's next series of researches was devoted to the experimental proof of the identity of frictional and voltaic electricity. Heroes of Science: Physicists 2012-01-17T03:00:17Z The actual frictional loss by reducing the valve 534being small, this method permitted the use of valves of a more convenient size. ASCE 1193: The Water-Works and Sewerage of Monterrey, N. L., Mexico The 4th article from the June, 1911, Volume LXXII, Transactions of the American Society of Civil Engineers. Paper No. 1193, Feb. 1, 1911. 2012-01-02T03:00:24.717Z This has the advantage of reducing greatly the wear and corrosion of the parts coming in frictional contact with the rod, which frequently causes trouble. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z This oil is carefully weighed before and after several hours’ frictional wear and tear. Modern Machine-Shop Practice, Volumes I and II 2012-03-23T02:00:33.140Z "So I think their value of frictional dissipation is considerably over-estimated." Rainfall Dissipates Energy via Friction with Air 2012-02-23T23:15:05.473Z The current from the frictional machine also served to deflect the needle of his galvanometer. Heroes of Science: Physicists 2012-01-17T03:00:17Z The positive feedback between frictional heating and particle collisions explains why avalanches develop quickly and unexpectedly. Understanding Deadly Ice Avalanches 2011-12-28T15:34:00Z All the frictional losses occur then practically in the air. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z Few, if any, well-arranged and careful experiments have been made with a view of determining the comparative value of different materials as a frictional medium for driving iron pulleys. Modern Machine-Shop Practice, Volumes I and II 2012-03-23T02:00:33.140Z "The drag force on a raindrop is not all frictional, especially for larger drops," says Ramesh Srivastava, a cloud physicist at the University of Chicago, Illinois. Rainfall Dissipates Energy via Friction with Air 2012-02-23T23:15:05.473Z The overheating may lead to the binding of frictional surfaces and even to the fusion of bushings if they be lined with anti-friction metal. Gas-Engines and Producer-Gas Plants A Practice Treatise Setting Forth the Principles of Gas-Engines and Producer Design, the Selection and Installation of an Engine, Conditions of Perfect Operation, Producer-Gas Engines and Their Possibilities, the Care of Gas-Engines and Producer-Gas Plants, with a Chapter on Volatile Hydrocarbon and Oil Engines 2011-12-28T03:00:31.087Z As a result of this motion and the associated frictional process, heat energy will make its appearance at the sliding surfaces of contact. The Energy System of Matter A Deduction from Terrestrial Energy Phenomena 2011-12-21T03:00:36.570Z Theory teaches us in brief, that the position adjustment is made necessary principally because of frictional errors. Rules and Practice for Adjusting Watches 2011-12-20T03:00:26.380Z This roller was pivoted in a framework which could be slid freely, yet tightly, along the circle, the roller meanwhile revolving by frictional contact on the outer edge. Modern Machine-Shop Practice, Volumes I and II 2012-03-23T02:00:33.140Z Owing to the decrease from atmospheric pressure in the indrawing charge of the cylinder, caused by valve and frictional obstruction, the compression seldom starts above 13 lbs. absolute, especially in high-speed engines. Aviation Engines Design?Construction?Operation and Repair 2011-12-04T03:00:04.777Z Should this prove to be the case, the defect is remedied by rubbing the frictional surface of the stem with fine emery paper and by lubricating it with cylinder-oil. Gas-Engines and Producer-Gas Plants A Practice Treatise Setting Forth the Principles of Gas-Engines and Producer Design, the Selection and Installation of an Engine, Conditions of Perfect Operation, Producer-Gas Engines and Their Possibilities, the Care of Gas-Engines and Producer-Gas Plants, with a Chapter on Volatile Hydrocarbon and Oil Engines 2011-12-28T03:00:31.087Z The frictional process, it is well known, is dependent in extent or degree on the pressure between the surfaces in contact. The Energy System of Matter A Deduction from Terrestrial Energy Phenomena 2011-12-21T03:00:36.570Z This roller, made movable on pivots, was attached to a frame-work, which could be slid freely, yet tightly, along the circle, the roller meanwhile revolving, by means of frictional contact, on the outer edge. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 3 "Gordon, Lord George" to "Grasses" 2011-11-13T03:00:13.177Z The technology works by reducing frictional resistance between the vessel hull and seawater using air bubbles along the bottom of the ship. Archer Daniels Midland & Mitsubishi Team Up To Blow Bubbles 2011-10-24T22:17:42Z There it becomes an effort tending either to move A upon B, or to move the body B itself, according to the frictional conditions. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 2 "French Literature" to "Frost, William" 2011-10-14T02:00:26.280Z As it travels forward and as it recedes from the explosion-chamber, it uncovers more and more of the frictional surface constituting the interior wall of the cylinder. Gas-Engines and Producer-Gas Plants A Practice Treatise Setting Forth the Principles of Gas-Engines and Producer Design, the Selection and Installation of an Engine, Conditions of Perfect Operation, Producer-Gas Engines and Their Possibilities, the Care of Gas-Engines and Producer-Gas Plants, with a Chapter on Volatile Hydrocarbon and Oil Engines 2011-12-28T03:00:31.087Z This did not much exceed that which is required for overcoming the frictional resistance within the producer. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3 "Frost" to "Fyzabad" 2011-08-15T02:00:28.473Z It turned by frictional adhesion along with the roller, but was sufficiently loose to allow of its being moved back by hand to any position without affecting the roller. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 3 "Gordon, Lord George" to "Grasses" 2011-11-13T03:00:13.177Z Gordon in the eighteenth century made the first practical frictional electrical machine, and soon some men were observing wonderful effects with it, though the charge was so small that it could actually accomplish little. Psychotherapy 2011-06-19T02:00:20.053Z Our observations suggest that the two rupture modes of the Tohoku-Oki earthquake reflect variations in the frictional nature of the subduction interface with depth and explain variable earthquake behavior in the Japan Trench. [Report] Shallow Dynamic Overshoot and Energetic Deep Rupture in the 2011 Mw 9.0 Tohoku-Oki Earthquake 2011-06-16T18:26:03.160Z He conceived of the air giving a frictional force to an object moving through the air. Our Legal Heritage June 2011 (Sixth) Edition 2011-06-03T02:00:23.737Z If the entire assembly is immersed in an ideal viscous fluid, then the frictional forces that act on the balls will be proportional to their velocity; there will be no static friction. The Fundamental Physical Limits of Computation 2011-06-01T17:45:02.143Z The same thin air that reduces frictional drag also reduces engine power, lift, and the effectiveness of control surfaces. Flying in the Coffin Corner--Air France Flight 447 2011-05-12T16:45:09.720Z In allowing for frictional and other losses, he deducted from one-fourth to one-third. A History of the Growth of the Steam-Engine 2011-04-21T02:00:53.240Z This principle is apparently contradicted in many cases of transformation, since it is impossible to transform energy by natural process, or by the use of mechanism, without doing work in overcoming frictional or resisting forces. The New Gresham Encyclopedia Volume 4, Part 2: Ebert to Estremadura 2011-04-14T02:00:56.200Z Another series of investigations, of a parallel character, was made in regard to ordinary or frictional electricity. Famous Men of Science 2011-03-08T03:00:49.717Z The frictional force will therefore be very weak if we are content to move the balls slowly. The Fundamental Physical Limits of Computation 2011-06-01T17:45:02.143Z This had never been determined, and Galvani succeeded in showing the presence of sparks exactly as if the animal were one of the apparatuses by which the sparks of frictional electricity are developed. Makers of Modern Medicine 2011-03-05T03:00:29.580Z The coefficient of friction is that quantity which, being multiplied by the total pressure acting normally to the surfaces in contact, will give the measure of the maximum frictional resistance to motion. Friction, Lubrication and the Lubricants in Horology 2011-01-20T03:00:07.073Z Apart from dynamic changes, from frictional elements which create uncertainties, in general, apart from uncertainty and irregularity and lack of "normality," there would be no occasion for bank reserves at all! The Value of Money 2011-01-04T03:01:12.363Z The transmission boosts fuel economy by improving the overall efficiency and reducing the frictional losses, which waste energy. How Carmakers Will Meet New U.S. Fuel Standards 2010-07-02T08:30:00Z In any mechanical system the energy that must be expended to work against friction is equal to the product of the frictional force and the distance through which the system travels. The Fundamental Physical Limits of Computation 2011-06-01T17:45:02.143Z By chance some frogs, the hind legs of which had been stripped of skin, were placed upon the table not far from an apparatus for the generation of frictional electricity. Makers of Modern Medicine 2011-03-05T03:00:29.580Z The maximum frictional resistance is independent of the area of contact, the velocity of rubbing, or any other conditions than intensity of pressure and condition of surfaces. Friction, Lubrication and the Lubricants in Horology 2011-01-20T03:00:07.073Z He warned of the "frictional costs of trading" in his 1993 annual letter to shareholders. 2010-01-19T00:51:00Z Among his early inventions were the hydro-electric machine, a powerful apparatus for producing frictional electricity, and the hydraulic crane. The New Gresham Encyclopedia. Vol. 1 Part 2 Amiel to Atrauli An amalgam made of cadmium and copper is frequently used in dentistry, and an amalgam of zinc and tin is used for the rubbers of frictional electric machines. The New Gresham Encyclopedia. Vol. 1 Part 1 A to Amide The reason will be found in the immense frictional resistance to diffusion. The Mechanism of Life The direction of frictional resisting forces is in the common tangent plane of the two surfaces, and directly opposed to their relative motion. Friction, Lubrication and the Lubricants in Horology 2011-01-20T03:00:07.073Z Other forms of brake depend, not on the friction between two solid bodies, but on the frictional resistance of a fluid, as in “fan” and “pump” brakes. Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 4 "Bradford, William" to "Brequigny, Louis" If, after reaching some depth, the external frictional resistance prevents the pipe from sinking farther, another pipe of small diameter may be inserted and the driving continued. Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 3 "Borgia, Lucrezia" to "Bradford, John" "This can be aggravated by frictional contacts, and finally we have the molecular interchange that binds the two pieces into one." The Year When Stardust Fell High tension electricity, generated by a frictional machine, provided with a condenser, was formerly much used for blasting. Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 1 "Bisharin" to "Bohea" He further states that these "laws" are not absolutely exact, as here stated, so far as they affect the magnitude of frictional resistance. Friction, Lubrication and the Lubricants in Horology 2011-01-20T03:00:07.073Z A frictional break is provided, pulled off by means of a shunt-excited magnet. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 3 "Capefigue" to "Carneades" The arc light is the result of frictional not chemical electricity. Harper's Round Table, July 30, 1895 By means of the kite which he sent aloft in a thunderstorm, he proved that the lightning in the atmosphere is identical with that developed by frictional electricity. The Greater Republic A History of the United States The frictional generation of heat in a metallic wire conveying a current can be measured in various ways, which correspond to slightly different methods. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 1 "Calhoun" to "Camoens" The hoisting gear may be driven either from the main engine by frictional gearing or by an independent set of engines. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 7 "Drama" to "Dublin" H. von Helmholtz, working on a similar hypothesis, but with a frictional term introduced into his equations, obtained formulae which are applicable to cases of absorption. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 5 "Dinard" to "Dodsworth" In the latter the tubes may be laid upon diagonally split drums and rotated by frictional contact. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 5 "Cosway" to "Coucy" The immense frictional load thus added to the entire system would certainly have made it dismally inefficient, if not actually unworkable. Elevator Systems of the Eiffel Tower, 1889 Perhaps the simplest type of a single rope system is an endless running rope from which the carriers are suspended, and with which they move by frictional contact. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 3 "Convention" to "Copyright" Motion is communicated to the rope by frictional contact with the drum, which is covered through about one-half of the circumference. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 5 "Clervaux" to "Cockade" In all these cases the velocity of the process at every instant is directly proportional to the driving-force and inversely proportional to the frictional resistance. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" “That trip around the world, which it made in a few minutes, generated considerable frictional heat in the shell.” Astounding Stories of Super-Science, March 1930 The idea was soon abandoned, and to-day there is no astronomical evidence that bodies having translatory motion in the ether meet with any frictional resistance whatever. The Machinery of the Universe Mechanical Conceptions of Physical Phenomena There are several forms of the electric telegraph; first, that in which frictional electricity has been proposed to produce sparks and motion of pith balls at a distance. Little Masterpieces of Science: Invention and Discovery Whenever I see a rod, as in the accompanying drawing of the Assyrian Trigonon, I maintain that its purpose was to excite frictional vibrations. The Bow, Its History, Manufacture and Use 'The Strad' Library, No. III. But if there were any frictional resistance in the medium through which the rings spin, then other effects would slowly occur, which ought to be looked for with interest. Pioneers of Science "Electrical machines," such as that shown, were, designed to produce frictional or "static" electricity, of which the quantity is usually small, and is therefore now produced chiefly for laboratory experiments. The Greatest Highway in the World Historical, Industrial and Descriptive Information of the Towns, Cities and Country Passed Through Between New York and Chicago Via the New York Central Lines. Based on the Encyclopaedia Britannica. It is not a phenomenon of mechanical impact or frictional resistance, since neither are possible in the ether. The Machinery of the Universe Mechanical Conceptions of Physical Phenomena The large frictional machine which is in use for this comparison is so well known by you that a better standard could not be desired. Scientific American Supplement, No. 647, May 26, 1888 Naturally, the strings are absent, but here is to be found a perfect example of the excitation of frictional vibration. The Bow, Its History, Manufacture and Use 'The Strad' Library, No. III. Hence no such frictional or retarding force can appreciably exist. Pioneers of Science It is desirable to pile the lumber so as to offer as little frictional resistance as possible and at the same time secure uniform circulation. Seasoning of Wood Another consideration is that the magnetic field itself, when moved in space, suffers no frictional resistance. The Machinery of the Universe Mechanical Conceptions of Physical Phenomena It is generally believed that these were meteoric masses raised to fierce heat by frictional resistance. Myths and Marvels of Astronomy Also, used to check the speed of machinery by frictional force pressing on the circumference of the largest wheel acted on by leverage of the brake. 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. Many intelligent people have failed to apprehend the vast difference between the low tension of voltaic electricity and frictional electricity, lightning being in the nature of the latter. Lippincott's Magazine, Vol. 26, August, 1880 of Popular Literature and Science When certain forms of work are done, as the turning of the handle of an electrical machine, frictional electricity will be produced. Aether and Gravitation He moved with a sort of dignified celerity, running fast enough for ten times the speed, upon a surface which had a frictional coefficient far below that of the smoothest possible ice. The Ambulance Made Two Trips You will find one of Siebe and Gorman’s voltaic batteries in my lodging, also a frictional electrical machine, which you can use if you prefer it. Under the Waves Diving in Deep Waters And George often he told me about the wonderful things he learned there, and among others he was fond of explaining to me about frictional electricity. Frictional Electricity From "The Saturday Evening Post." One is of our faith in Christ, as revealed in the frictional fires of opposition. Quiet Talks on the Crowned Christ of Revelation A decided leathery, frictional sound is detected over a considerable portion of the thoracic surface. Cattle and Their Diseases Embracing Their History and Breeds, Crossing and Breeding, And Feeding and Management; With the Diseases to which They are Subject, And The Remedies Best Adapted to their Cure Before that time, all experiments began and ended with frictional electricity. Electricity for Boys We put it among the centripetal sensations which, are produced as the movement outlines itself, and which proceed from the contracted muscles, the stretched ligaments, and the frictional movements of the articulations. The Mind and the Brain Being the Authorised Translation of L'Âme et le Corps And George he says that this here frictional electricity is the only kind that'll cure pain. Frictional Electricity From "The Saturday Evening Post." There is a moment of pure frictional crisis and contact of blood. Fantasia of the Unconscious It is important that there should be good metallic contact between the brushes and the commutator, and at the same time the frictional resistance resulting from the contact must be a minimum. Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" Dr. Gilbert, of England, made a number of researches at that time, principally with amber and other materials, and Boyle, in 1650, made numerous experiments with frictional electricity. Electricity for Boys Eventually it will come out with a little encouragement in the way of frictional massage of the womb through the abdominal walls. The Eugenic Marriage, Volume I. (of IV.) A Personal Guide to the New Science of Better Living and Better Babies I never take no dare, not from no man of that kind, anyways, sir, so I bet him a quarter I'd cure him, and cure him with frictional electricity, too. Frictional Electricity From "The Saturday Evening Post." She is the fierce center of retraction, of frictional withdrawal into separateness. Fantasia of the Unconscious It seems strange that this error should have diffused itself very extensively, when it is remembered that a certain degree of roughness is essential to frictional resistance. Scientific American, Volume XXIV., No. 12, March 18, 1871 A Weekly Journal of Practical Information, Art, Science, Mechanics, Chemistry, and Manufactures. When man first began experimenting, he produced a current by frictional means, and collected the electricity in a bottle or jar. Electricity for Boys The more backward and undeveloped the Negro, the easier is the process of his adjustment to the white race; but when you give him "Greek and Latin and eyeglasses" frictional problems inevitably arise. Twentieth Century Negro Literature Or, A Cyclopedia of Thought on the Vital Topics Relating to the American Negro Then, pulling the bedclothes up under his chin and closing his eyes wearily, he said: "Curse the day, say I, when George Watkins first went to the Huxley Institute and heard about frictional electricity." Frictional Electricity From "The Saturday Evening Post." She it is who burns white with the intense friction of her withdrawal into separation, that cold, proud white fire of furious, almost malignant apartness, the struggle into fierce, frictional separation. Fantasia of the Unconscious Now, the frictional resistance between a steel rod and a concrete beam is not such as should be depended on in modern engineering designs. Some Mooted Questions in Reinforced Concrete Design American Society of Civil Engineers, Transactions, Paper No. 1169, Volume LXX, Dec. 1910 The early escapements were all frictional escapements, i.e., the balance staff was never free from the influence of the train. Watch and Clock Escapements A Complete Study in Theory and Practice of the Lever, Cylinder and Chronometer Escapements, Together with a Brief Account of the Origin and Evolution of the Escapement in Horology What frictional resistance should be assumed on a hollow, steel, smooth-bore pile which had been driven through sharp sand and had penetrated soft, marshy material the bearing resistance of which was practically valueless? Pressure, Resistance, and Stability of Earth American Society of Civil Engineers: Transactions, Paper No. 1174, Volume LXX, December 1910 Artificial reservoirs are usually constructed on the near outskirts of a town in order that the frictional force lost in transmission may be reduced to a minimum. General Science Her white fire is the frictional fire of the last strange, intense watery matter, as this matter fights its way out of combination and out of combustion with the sun-stuff. Fantasia of the Unconscious The explanation is found in the high frictional resistance between the band and the pipe, which distributes the weakness of a bad splice over several adjacent turns of the band around the pipe. The Water Supply of the El Paso and Southwestern Railway from Carrizozo to Santa Rosa, N. Mex. American Society of Civil Engineers: Transactions, No. 1170 It is one of the two so-called frictional rest dead-beat escapements which have come into popular use, the other being the duplex. Watch and Clock Escapements A Complete Study in Theory and Practice of the Lever, Cylinder and Chronometer Escapements, Together with a Brief Account of the Origin and Evolution of the Escapement in Horology The engine overcame the frictional resistance produced by a brake. Scientific American Supplement, No. 483, April 4, 1885 The proper British electricity is that high-grade useless long-sparking stuff you get by turning round a glass machine; stuff we used to call frictional electricity. Mr. Britling Sees It Through Force the two together, and you cause a terrible frictional excitement and jarring. Fantasia of the Unconscious At each end the spiral wind is doubled two turns, the second lying over the first and developing a frictional resistance similar to that of a double hitch of a rope around a post. The Water Supply of the El Paso and Southwestern Railway from Carrizozo to Santa Rosa, N. Mex. American Society of Civil Engineers: Transactions, No. 1170 The idea with the advocates of the frictional rest escapements was, the friction of the tooth acted as a corrective, and led no doubt to the introduction of going-barrel watches. Watch and Clock Escapements A Complete Study in Theory and Practice of the Lever, Cylinder and Chronometer Escapements, Together with a Brief Account of the Origin and Evolution of the Escapement in Horology The roll, engaging frictionally with the cam, causes the latter to turn on its centre in the direction indicated by the arrow in Fig. A Book of Exposition He conceived of the air giving a frictional force to an object in motion. Our Legal Heritage, 5th Ed. The frictional tone is chiefly due to that general attitude of blame which I have already condemned as being absurd and unjustifiable. The Human Machine This introduces a fixed element of frictional resistance which does not decrease with the increasing smoothness of the interior surface of wood pipe, and probably accounts for the higher resistance of the 16-in. line. The Water Supply of the El Paso and Southwestern Railway from Carrizozo to Santa Rosa, N. Mex. American Society of Civil Engineers: Transactions, No. 1170 In these frictional escapements the balance staff locked the train while the balance performed its arc of vibration. Watch and Clock Escapements A Complete Study in Theory and Practice of the Lever, Cylinder and Chronometer Escapements, Together with a Brief Account of the Origin and Evolution of the Escapement in Horology Thus, among the sounds usually called ‘rappings,’ Mr. Crookes mentions, as matter within his own experience, ‘a cracking like that heard when a frictional machine is at work’. Cock Lane and Common-Sense The rove is drawn forward by surface or frictional contact between the roll itself and a rapidly rotating drum. The Jute Industry: from Seed to Finished Cloth A man employs a frictional tone through habit. The Human Machine An Englishman devised a frictional telegraph early in the last century and endeavored to interest the Admiralty. Masters of Space Morse, Thompson, Bell, Marconi, Carty These frictional escapements held favor with many eminent watchmakers even after the introduction of the detached escapements. Watch and Clock Escapements A Complete Study in Theory and Practice of the Lever, Cylinder and Chronometer Escapements, Together with a Brief Account of the Origin and Evolution of the Escapement in Horology The frictional resistance of screw propellers is always a fruitful source of inefficiency. Scientific American Supplement, No. 598, June 18, 1887 The advantage is that it meets the case where the salt crystals form a heavy frictional surface for wood runners. Scott's Last Expedition Volume I The frictional tone is an instinct with him. The Human Machine He demonstrated that frictional and atmospheric electricity are the same. Masters of Space Morse, Thompson, Bell, Marconi, Carty The value of the friction on the surface of the pulley, however, is more constant for a given variation of the frictional coefficient in Fig. Scientific American Supplement, No. 415, December 15, 1883 This was quite apart from the frictional resistance offered to the upper thread in passing over the cavity of the hook. Scientific American Supplement, No. 598, June 18, 1887 But spark or frictional electric telegraphs were destined to give way to those actuated by the voltaic current, as the chemical mode of signalling was superseded by the electro-magnet. Heroes of the Telegraph While the frictional appliance is still employed in medicine, it ranks with the flint axe and the tinder-box in industrial obsolescence. Edison, His Life and Inventions The tractive power, therefore, increases rapidly to a value far exceeding the frictional resistances, but this surplus energy serves to increase the velocity, and disappears as soon as a uniform velocity is reached. Scientific American Supplement, No. 433, April 19, 1884 The cord may be taken over four pulleys; in that case a variation of 20 per cent. in the frictional coefficient only alters the total friction on the pulleys 1¼ percent. Scientific American Supplement, No. 415, December 15, 1883 This is not to say that the frictional resistance is greater in proportion to the thrust at high than at low speeds. Scientific American Supplement, No. 598, June 18, 1887 In 1806, Ralph Wedgwood submitted a telegraph based on frictional electricity to the Admiralty, but was told that the semaphore was sufficient for the country. Heroes of the Telegraph The useful results obtainable previously from the current of a frictional machine were not much greater than those to be derived from the flight of a rocket. Edison, His Life and Inventions It is pressed firmly upon the linen and rubbed with much force, and this frictional action puts on the gloss. Practical Suggestions for Mother and Housewife The resistances incurred are due to the inertia of the air and various frictional influences; the nature and amount of these last vary with the construction of the fan. Scientific American Supplement, No. 360, November 25, 1882 The flames were arranged so as to form one electrode of a frictional machine. Scientific American Supplement, No. 299, September 24, 1881 The battery for this arrangement was also frictional. Steam, Steel and Electricity The frictional movements of the pad with the drum were comparatively long or short, and corresponded with the length of the impulses sent in over the line. Edison, His Life and Inventions For that, then, another kind of process is needful, and we find it in frictional heat applied most gradually and judiciously. Erema — My Father's Sin As early as 1847, Watson had erected a line some two miles in length, extending over the housetops in London, and operated it by means of discharges from an ordinary frictional electric machine. Beacon Lights of History, Volume 14 The New Era; A Supplementary Volume, by Recent Writers, as Set Forth in the Preface and Table of Contents The similarity between this process and the frictional generation of electricity is evident. Man or Matter There always will be, however, some frictional unemployment. State of the Union Address Thus, the transmission of Morse dots and dashes by the distant operator resulted in movements of corresponding length by the frictional pad and vibrating arm. Edison, His Life and Inventions The frictional parts of all were affected by the desert sand, and needed ceaseless attention and repair. The River War An Account of the Reconquest of the Sudan Air is an excellent insulator, and hence we are able to perform our experiments on frictional electricity in it. The Story of Electricity Among his writings there is a treatise on electricity, giving many generally unknown instances of frictional electricity which are in good accord with our picture and well worth investigating. Man or Matter There was a sense of electric surcharge everywhere, frictional, a neurasthenic haste for excitement. Aaron's Rod The other surface consisted of a small pad which rested with frictional pressure on the periphery of the drum. Edison, His Life and Inventions There was only the inner, individual darkness, sensation within the ego, the obscene religious mystery of ultimate reduction, the mystic frictional activities of diabolic reducing down, disintegrating the vital organic body of life. Women in Love The most important practical result of the early experiments with frictional electricity was Benjamin Franklin's great discovery of the identity of lightning and the electric spark. The Story of Electricity These few facts connected with the generation of frictional electricity are enough to allow us to form a picture of the nature of the polarity represented by the two kinds of electricity. Man or Matter With these devices he found that he could retain the charge of electricity for several hours, and could produce the usual electrical manifestations, even to igniting spirits, quite as well as with the frictional machine. A History of Science — Volume 2 His object now is to compare frictional with voltaic electricity. Faraday as a Discoverer The terrible frictional violence of death filled her, and she received it in an ecstasy of subjection, in throes of acute, violent sensation. Women in Love The ordinary frictional machine as now made is illustrated in figure i, where P is a disc of plate glass mounted on a spindle and turned by hand. The Story of Electricity The electricity thus produced is termed frictional electricity. The Story of Electricity These points were arranged to receive an electrical discharge from a frictional machine, the discharge causing the wheel to rotate. A History of Science — Volume 2 Researches on frictional electricity: induction: conduction: specific inductive capacity: theory of contiguous particles. Faraday as a Discoverer His first great paper on frictional electricity was sent to the Royal Society on November 30, 1837. Faraday as a Discoverer |
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