| 单词 | repulsive force |
| 例句 | Thus the attractive and repulsive forces between the individual particles nearly cancel each other out, and there is very little net electromagnetic force. A Brief History of Time: And Other Essays 1988-01-01T00:00:00Z This can happen only at very high temperatures where the particles are moving so fast that the repulsive force does not have time to act—temperatures of tens of millions of degrees. Cosmos 1980-01-01T00:00:00Z On the other hand, if the stars got a bit farther away from each other, the repulsive forces would dominate and drive them farther apart. A Brief History of Time: And Other Essays 1988-01-01T00:00:00Z Whatever “it” is, it exerts a repulsive force that pushes everything apart and tugs against gravity. Will the Universe Ever Stop Expanding? 2023-08-29T04:00:00Z To some creatures, a lamp is a siren call; to others, it's a repulsive force field. The Sky Needs Its ‘Silent Spring’ Moment 2022-10-01T04:00:00Z If one piece is placed above another, the repulsive force can be great enough to support the top piece's weight. College Physics for AP Courses 2015-08-12T00:00:00Z The bond is stable because at this point, the attractive and repulsive forces combine to create the lowest possible energy configuration. Chemistry 2019-02-14T00:00:00Z Facilitated transport proteins shield these materials from the repulsive force of the membrane, allowing them to diffuse into the cell. Biology for AP Courses 2022-06-09T00:00:00Z Newton proposed that comet tails are formed by a repulsive force of sunlight driving particles away from the head—an idea close to our modern view. Astronomy 2016-10-13T00:00:00Z But during the second half, radiation and matter were diluted so much that the vacuum’s “dark energy” dominated and the cosmic expansion was accelerated by the vacuum’s repulsive force. Watching the Universe Expand in Real Time 2021-05-06T04:00:00Z The 6 protons are all positively charged and in very close proximity, with separations on the order of 10-15 meters, which should result in an enormous repulsive force. College Physics for AP Courses 2015-08-12T00:00:00Z The very high temperature is necessary to give the nuclei enough kinetic energy to overcome the very strong repulsive forces resulting from the positive charges on their nuclei so they can collide. Chemistry 2019-02-14T00:00:00Z Researchers hope that a detailed map in this part of the spectrum will offer new ways to track the Universe’s expansion, and to study the mysterious repulsive force called dark energy. Astronomers unveil epic X-ray map of the Universe 2020-07-07T04:00:00Z That description includes massive amounts of invisible mass, known as dark matter, along with a peculiar repulsive force, called dark energy, perfusing all of space. Physicists Probe Validity of Einstein’s Gravity on Cosmic Scales 2020-01-21T05:00:00Z SRG’s main scientific goal is cosmological: to create a 3D map of the cosmos that will reveal how the Universe accelerates under the mysterious repulsive force called dark energy. New Space Telescope Will Map the Universe in High-energy X-rays 2019-06-17T04:00:00Z We can visualize particle exchange as analogous to macroscopic phenomena such as two people passing a basketball back and forth, thereby exerting a repulsive force without touching one another. College Physics for AP Courses 2015-08-12T00:00:00Z SRG’s main scientific goal is cosmological: to create a 3D map of the cosmos that will reveal how the Universe cosmos accelerates under the mysterious repulsive force called dark energy. Space telescope to chart first map of the Universe in high-energy X-rays 2019-06-10T04:00:00Z As nuclei get larger, the repulsive force between protons becomes overwhelming. A storied Russian lab is trying to push the periodic table past its limits—and uncover exotic new elements 2019-01-30T05:00:00Z Plasmons soften the repulsive forces between individual electrons, thus explaining why the quantum theory worked. David Pines (1924–2018) 2018-08-19T04:00:00Z “You can get super-plastic behavior, which means you can deform it a lot more. It actually has a slightly higher repulsive force as it returns back to normal.” Mizuno GT180 driver, fairway wood mix hot face material with movable weight - Golf Digest 2018-02-01T05:00:00Z You will see that even at a distance as large as 1 km, the repulsive force is substantial because 1 C is a very significant amount of charge. College Physics for AP Courses 2015-08-12T00:00:00Z In the 1990s, Adam Riess, now an astrophysicist at Johns Hopkins University in Baltimore, Maryland, led one of the groups that discovered dark energy, a repulsive force that is accelerating the expansion of the universe. A recharged debate over the speed of the expansion of the universe could lead to new physics 2017-03-08T05:00:00Z Theoretically when negative mass is brought into proximity with positive mass it would create a powerful repulsive force - an infinitely accelerating drive, or to borrow from Star Trek, a warp drive. Project Greenglow and the battle with gravity - BBC News 2016-03-22T04:00:00Z Physically, this new term, denoted by the Greek letter lambda, represented a long-range repulsive force. A Century Ago, Einstein’s Theory of Relativity Changed Everything 2015-11-24T05:00:00Z The weird effects seen in quantum experiments arise because there is a repulsive force between particles and their clones in parallel universes. Quantum physics: What is really real? 2015-05-19T04:00:00Z That would be a repulsive force rather than an attractive force. Biography of a space telescope: Voices of Hubble Skinner and his colleagues expected that the ‘repulsive force’ would depend on the separation in space between the pedestrians, making them change trajectory when they get too close, so as to avoid collisions. Mathematical time law governs crowd flow 2014-11-20T05:00:00Z They employ the same attractive and repulsive forces between molecules - known as van der Waals forces - that geckos use. Geckos inspire 'Spider-Man' gloves 2014-11-19T05:00:00Z Now, one researcher is trying harness the repulsive forces of magnets to reduce the impact of head-to-head collisions before they occur. Could magnets in helmets reduce football concussions? 2014-11-17T05:00:00Z “The repulsive force between them sets up ripples that propagate through all of these parallel worlds,” Wiseman says. Quantum physics: What is really real? 2015-05-19T04:00:00Z Since it was space itself supplying the repulsive force, the more space was created, the harder it pushed apart. Detection of Waves in Space Buttresses Landmark Theory of Big Bang 2014-03-17T14:46:02Z But as it approached the fundamental size limit dictated by loop quantum gravity, a repulsive force kicked in and kept the singularity open, turning it into a tunnel to a cosmos that preceded our own. Theoretical physics: The origins of space and time 2013-08-28T17:20:26.740Z At once a repulsive force is set up which drives the two bodies away from each other in opposition to the action of gravity. Popular scientific lectures 2012-04-24T02:00:17.273Z As it is we shall find a continuous molecule manifesting attractive and repulsive forces; attraction corresponding to the tendency of the self-preservations to become perfect, repulsion to the frustration of this. Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 3 "Helmont, Jean" to "Hernosand" 2012-04-14T02:00:23.707Z Prof. Barnard has suggested that all the phenomena of comets’ tails cannot be explained by a repulsive force from the sun. Astronomical Curiosities Facts and Fallacies 2012-03-27T02:00:18Z In the modern contrast between attractive and repulsive forces, there lies a remnant of the Empedoklean opposition between Love and Hate. International Congress of Arts and Science, Volume I Philosophy and Metaphysics 2011-12-12T03:00:31.160Z To explain the manifold phenomena of nature he supposed them to be produced by combinations of the elements in different proportions through the attractive and repulsive forces of ‘love’ and ‘discord.’ Astronomical Lore in Chaucer 2011-10-13T02:00:42.860Z It implied the existence of a repulsive force pervading space that counteracts the gravitational attraction holding the galaxies together. Nobel Dreams: 2011 Physics Prize Honors Accelerating Universe 2011-10-05T11:15:00.287Z Such fears are repulsive forces, making spirit approach arduous and often impossible. Witchcraft of New England Explained by Modern Spiritualism 2011-06-05T02:00:13.200Z He computed that in this comet the repulsive force exerted by the sun on the comet’s tail was “about 39·5 times the gravitational force.” Astronomical Curiosities Facts and Fallacies 2012-03-27T02:00:18Z They tell me that matter consists of atoms, which are separated by mere space devoid of contents; and that, through this void, radiate the attractive and repulsive forces whereby the atoms affect one another. Essays Upon Some Controverted Questions 2010-12-20T17:12:31.233Z He further supposed that the attractive force is constant throughout the minute distance to which it extends, but that the repulsive force increases rapidly as the distance diminishes. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 3 "Capefigue" to "Carneades" The source of the repulsive force by which the matter forming the tail of a comet is driven away from the sun is another question that has not yet been decisively answered. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 7 "Columbus" to "Condottiere" Our voyager was very familiar with the laws of gravity and with all the other attractive and repulsive forces. Romans — Volume 3: Micromegas We may in this way reduce any real structure to the case of a system of points with attractive or repulsive forces acting between certain pairs of these points, and keeping them in equilibrium. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 3 "Destructors" to "Diameter" The greater mass of the enemy vessels and their lack of a quick-acting repulsive force would prove their undoing. Astounding Stories of Super-Science, November, 1930 As if upheld by the same repulsive force that drove back the white fog, it simply hung suspended three hundred feet above the heart of the violet flame. Astounding Stories of Super-Science, May, 1930 But, in order that this repulsive force may act, the particles, however minute they may be, must be opaque. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 7 "Columbus" to "Condottiere" "I suspect," he wrote in 1877, "that comets are divisible into groups, for each of which the repulsive force is perhaps the same." A Popular History of Astronomy During the Nineteenth Century Fourth Edition As the comet gradually recedes from the sun the repulsive force becomes weaker, and accordingly we find that the tail of the comet declines. The Story of the Heavens It chanced that, while that object was under discussion, reference was made to the action of a repulsive force exerted by the sun upon the matter of the comet's tail. Myths and Marvels of Astronomy It was apparently the same repulsive force that had driven back the waters. Astounding Stories of Super-Science, May, 1930 But the repulsive forces will be no less strong, and to calculate the resultant of these contending interests will be the problem for practical statesmen to solve. The Romance of Mathematics Being the Original Researches of a Lady Professor of Girtham College in Polemical Science, with some Account of the Social Properties of a Conic; Equations to Brain Waves; Social Forces; and the Laws of Political Motion. Less narrow limits were assigned to the values of the repulsive force employed to produce the second type. A Popular History of Astronomy During the Nineteenth Century Fourth Edition The dilations and transformations undergone by the tail suggest that they may be due to a repulsive force emanating from the Sun, an electric charge transmitted doubtless through the ether. Astronomy for Amateurs If the attractive force is doubled, then the repulsive force is doubled. Aether and Gravitation When we touch matter, we only really experience sensations of resistance, implying repulsive force; and no other sense can give us such apparently solid proofs of the reality of matter, as touch does. Contributions to the Theory of Natural Selection A Series of Essays Love is sometimes the growth of degrees: it may also bound into existence in a moment; for there is a certain sympathetic attraction between some persons, as there is between others an antipathetical, repulsive force. She and I, Volume 1 The particles forming the one were actuated by a repulsive force ten times as powerful as those forming the other. A Popular History of Astronomy During the Nineteenth Century Fourth Edition More than that she was being pushed downward by the repulsive force of the strange enemy beam upon her. Wandl the Invader If the attractive force is halved, the repulsive force is halved. Aether and Gravitation But meanwhile Murgatroyd had been applying the repulsive force a little too strongly. A Honeymoon in Space Sugar is much more soluble at high than at low temperatures, the heat acting in this as in almost all cases as a repulsive force among the molecules. Scientific American Supplement, No. 633, February 18, 1888 Olbers's theory of unequal repulsive forces was never more beautifully illustrated. A Popular History of Astronomy During the Nineteenth Century Fourth Edition For with the electrification of the atom attractive and repulsive forces arise. The Birth-Time of the World and Other Scientific Essays Among them is the hypothesis of M. Faye, in which he assumes that there is a repulsive force which has its origin in the heat of the sun. Aether and Gravitation He diminished the vertically repulsive force a little, and the Astronef dropped slantingly towards the bed of what might once have been the Pacific of the Moon. A Honeymoon in Space This cold sirup causes a sudden though slight reduction in temperature, which may so reduce the repulsive forces as to allow the attraction among the molecules to prevail, resulting in the inception of crystallization. Scientific American Supplement, No. 633, February 18, 1888 The repulsive force of the States toward one another was still sufficiently strong to be an element of constant and recognized danger to the Union. American Eloquence, Volume 4 Studies In American Political History (1897) And such attractive or repulsive forces are often spoken of as if they were real things, capable of exerting a pull, or a push, upon the particles of matter concerned. The Advance of Science in the Last Half-Century This repulsive force is not propagated instantaneously, but the velocity of propagation is the same as that of a ray of light. Aether and Gravitation A very slight exertion of repulsive force was sufficient to detach the Astronef from the body of Phobos. A Honeymoon in Space In some cases it has been supposed that, under such circumstances, attractive and repulsive forces have been exhibited, i.e. that such bodies have become slightly magnetic. Experimental Researches in Electricity, Volume 1 In order to escape, it has to make a right-angle turn and pass between coin and reel, and, while travelling in this direction, loses most of its repulsive force. Things To Make As a general rule, his successors have been content to accept the doctrine of attractive and repulsive forces, without troubling themselves about the philosophical difficulties which it involves. The Advance of Science in the Last Half-Century Herschel in his Lectures on Scientific Subjects definitely refers to the existence of a repulsive force in the solar system, and asserts that it offers the most interesting prospect of any future discovery. Aether and Gravitation Redgrave then raised the Astronef a couple of hundred feet and, by directing the repulsive force against the mountain walls, developed just sufficient energy to keep them moving at about twelve miles an hour. A Honeymoon in Space This elasticity arises from the repulsive force of its particles, and is always equal to the compressive force which it balances. The Atlantic Monthly, Volume 06, No. 33, July, 1860 But he manifestly regards their relationship as constituting either a very attractive or highly repulsive force. Life: Its True Genesis That comet showed two tails, apparently of equal length, which moved opposite to each other, and perpendicularly to the orbit of the nucleus, and showing no signs of repulsive force from the sun. Scientific American Supplement, No. 433, April 19, 1884 We have, therefore, to suppose that in place of the hard atom, there is merely a geometrical point which can exert attractive or repulsive forces to, or from, the central point. Aether and Gravitation It had risen from the surface of Ganymede, and then, possibly because its engines could not develop sufficient repulsive force, the tremendous pull of the giant planet had dragged it away. A Honeymoon in Space This, of course, was intended to direct the stream of the repulsive force against the Sun. Across the Zodiac At very small distances the particles of matter repel each other; and this repulsive force increases beyond all limits as the distances are diminished, and will consequently forever prevent actual contact. A History of Science — Volume 3 Various attempts have been made to define that repulsive force which was thus demanded, and the same force has been ascribed by scientists to the repulsion due to heat, to light, and also to electricity. Aether and Gravitation So that we have virtually a repulsive force ever directed against the earth, estimated by Professor Stokes to be equal to the estimated horse-power. Aether and Gravitation Several French scientists have suggested that the repulsive force was due to the heat of the sun. Aether and Gravitation M. Faye, another French scientist, states that the repulsive force had its origin in the heat of the sun. Aether and Gravitation To heat a substance means merely to increase the rate of vibration of its particles; thus also, plainly, increasing the repulsive forces and expanding the bulk of the mass as a whole. A History of Science — Volume 3 |
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