| 单词 | gravitational attraction |
| 例句 | Their gravitational attraction would thus curve up the universe to infinitely small size. A Brief History of Time: And Other Essays 1988-01-01T00:00:00Z If the density is less than a certain critical value, determined by the rate of expansion, the gravitational attraction will be too weak to halt the expansion. A Brief History of Time: And Other Essays 1988-01-01T00:00:00Z Even in regions where there were more matter particles than average, the gravitational attraction of the matter would have been outweighed by the repulsion of the effective cosmological constant. A Brief History of Time: And Other Essays 1988-01-01T00:00:00Z Although we would not be able to see them because the light from them would not reach us, we would still feel their gravitational attraction. A Brief History of Time: And Other Essays 1988-01-01T00:00:00Z This additional heat also increases the pressure of the gas until it is sufficient to balance the gravitational attraction, and the gas stops contracting. A Brief History of Time: And Other Essays 1988-01-01T00:00:00Z He wasn’t familiar at all, but his massive grief drew me to him, just like Newton’s gravitational attraction. Sir Fig Newton and the Science of Persistence 2022-03-22T00:00:00Z Regions in which the density was slightly higher than average would have had their expansion slowed down by the gravitational attraction of the extra mass. A Brief History of Time: And Other Essays 1988-01-01T00:00:00Z One leaves behind only its grin, the other, only its gravitational attraction. Zero: The Biography of a Dangerous Idea 2000-02-07T00:00:00Z The electromagnetic attraction between negatively charged electrons and positively charged protons in the nucleus causes the electrons to orbit the nucleus of the atom, just as gravitational attraction causes the earth to orbit the sun. A Brief History of Time: And Other Essays 1988-01-01T00:00:00Z In the second kind of solution, the universe is expanding so rapidly that the gravitational attraction can never stop it, though it does slow it down a bit. A Brief History of Time: And Other Essays 1988-01-01T00:00:00Z However, a real particle close to a massive body has less energy than if it were far away, because it would take energy to lift it far away against the gravitational attraction of the body. A Brief History of Time: And Other Essays 1988-01-01T00:00:00Z The extra gravitational attraction of such a large number of black holes could explain why our galaxy rotates at the rate it does: the mass of the visible stars is insufficient to account for this. A Brief History of Time: And Other Essays 1988-01-01T00:00:00Z The universe as a whole would have continued expanding and cooling, but in regions that were slightly denser than average, the expansion would have been slowed down by the extra gravitational attraction. A Brief History of Time: And Other Essays 1988-01-01T00:00:00Z This is because the more massive the star is, the hotter it needs to be to balance its gravitational attraction. A Brief History of Time: And Other Essays 1988-01-01T00:00:00Z Astrology maintains that the gravitational attraction of the planets at the time of one’s birth somehow has an effect on one’s personality. Innumeracy: Mathematical Illiteracy and Its Consequences 1988-01-01T00:00:00Z It was adopted by Malebranche and other followers of Descartes, and Newton sometimes speaks as if every act of gravitational attraction is directly willed by God. The Invention of Science 2015-09-17T00:00:00Z Newton’s law of gravity says that the gravitational attraction of a star is exactly one quarter that of a similar star at half the distance. A Brief History of Time: And Other Essays 1988-01-01T00:00:00Z Stars will remain stable like this for a long time, with heat from the nuclear reactions balancing the gravitational attraction. A Brief History of Time: And Other Essays 1988-01-01T00:00:00Z As hard as expansion may try to pull them apart, the gravitational attraction compensates. Black holes could come in 'perfect pairs' in an ever expanding Universe 2023-10-19T04:00:00Z Scientists expected this expansion would slow as the universe aged; the gravitational attraction between bits of matter would act as a brake. Will the Universe Ever Stop Expanding? 2023-08-29T04:00:00Z He also said that Leonardo realized that gravitational attraction kept the seas from falling off the earth. A Doodle Reveals da Vinci’s Early Deconstruction of Gravity 2023-02-17T05:00:00Z Then, a second known mass is placed at multiple known distances from the first, and the amount of stretch in the spring resulting from the gravitational attraction of the two masses is measured. College Physics for AP Courses 2015-08-12T00:00:00Z The mutual gravitational attraction between the masses of various regions within the Sun produces tremendous forces that tend to collapse the Sun toward its center. Astronomy 2016-10-13T00:00:00Z Tidal energy arises from the gravitational attraction of the moon and the more distant sun on the earth’s oceans, combined with rotation of the earth. Environmental Biology 2018-09-06T00:00:00Z At some point, you’re sensitive to the gravitational attraction of graduate students coming into and out of the lab. How Measuring Time Shaped History 2022-01-28T05:00:00Z During the first half of the history of the universe, the cosmic expansion rate slowed down owing to the gravitational attraction imparted by radiation and matter. Watching the Universe Expand in Real Time 2021-05-06T04:00:00Z Construct a problem in which you place identical excess charges on the space ships to exactly counter their gravitational attraction. College Physics for AP Courses 2015-08-12T00:00:00Z The gravitational attraction far away from a black hole is the same as that of the star that collapsed to form it. Astronomy 2016-10-13T00:00:00Z Physicists exalt the beauty and elegance of Newton’s law of gravitational attraction and of the Schrödinger equation. Is the Schrödinger Equation True? 2021-01-07T05:00:00Z If the Universe holds enough matter, including dark matter, the combined gravitational attraction of everything will gradually halt this expansion and precipitate the ultimate collapse. Crunch, rip, freeze or decay — how will the Universe end? 2020-08-09T04:00:00Z At any rate, this insight was just a starting point; he was just beginning to understand gravitational attraction, and to discern its universality. Must We All Become More Creative During to the Pandemic? 2020-03-29T04:00:00Z If we were to place equal charges on the Earth and the Moon, how large would they need to be for the electrostatic repulsion to counteract the gravitational attraction? College Physics for AP Courses 2015-08-12T00:00:00Z The gravitational attraction of so great a mass of gas would affect the motions of stars in ways that could easily be detected. Astronomy 2016-10-13T00:00:00Z Think of it as more of a dance: Two close galaxies are drawn together through gravitational attraction. Galaxy Cruise, a citizen science project, seeks volunteers to help classify images of ‘galactic interactions’ 2020-03-06T05:00:00Z The chaos occurs over immense timescales and is caused by the accumulation of slight gravitational attractions between the planets. A Geological "Orrery" Could Reveal Planetary Dynamics in Deep Time 2019-04-09T04:00:00Z That is because of the additional gravitational attraction from the mass of the mountain. How NASA’s Curiosity Rover Weighed a Mountain on Mars 2019-01-31T05:00:00Z Mutual gravitational attraction keeps them married despite their gentle, 15-hour rotation. New Horizons reveals a ‘snowman’ at the edge of the solar system 2019-01-02T05:00:00Z The gravitational attraction of the newly forming stars also increases the density of the surrounding cloud material. Astronomy 2016-10-13T00:00:00Z The universal constant Big G measures gravitational attraction, but physicists are struggling to pin it down.Credit: Feeling the pull of gravity 2018-08-28T04:00:00Z This “extra force” acting on the object’s trajectory amounts to only about 0.1 percent of the Sun’s gravitational attraction. Cigar-shaped interstellar visitor 'Oumuamua classified as comet 2018-06-27T04:00:00Z Just as simulating the massive gravitational attraction of a black hole does not actually deform spacetime around the computer implementing the astrophysical code, programming for consciousness will never create a conscious computer. What Is Consciousness? 2018-05-22T04:00:00Z If the total mass involved were significant, then the universe's gravitational mass would be gradually reduced, and the slowing of the universe's expansion from gravitational attraction would decrease. Readers Respond to the July 2017 Issue 2017-11-05T04:00:00Z This constant represented a hypothetical force of repulsion that could balance gravitational attraction on the largest scales and permit galaxies to remain at fixed distances from one another. Astronomy 2016-10-13T00:00:00Z Of the fundamental constants that rule the physical Universe, by far the most perplexing is ‘Big G’, which quantifies gravitational attraction. Feeling the pull of gravity 2018-08-28T04:00:00Z It won’t be placed into a low lunar orbit, but into special points in space such as where the gravitational attraction between the Earth and moon are balanced. How a New Orbital Moon Station Could Take Us to Mars and Beyond 2017-09-30T04:00:00Z Their gravitational attraction makes everything that follows feel inevitable. ‘Below Her Mouth’: Electricity happens when bodies do the talking 2017-04-27T04:00:00Z The movement of the Milky Way is dominated by the gravitational attraction of the galaxies around it. Milky Way being pushed through space by cosmic dead zone, say scientists 2017-01-30T05:00:00Z Galaxies were then close together, and their mutual gravitational attraction slowed the expansion. Astronomy 2016-10-13T00:00:00Z She suspects there is an undiscovered particle that links gravitational attraction with nature’s other forces, and is planning an experiment that uses a special satellite to try to track it down. Crucible 2016-03-10T05:00:00Z But he also argues that mutual gravitational attraction between dark matter and Earth will cause dark matter to accumulate at the planet’s core. Did dark matter do in the dinosaurs? 2015-02-25T05:00:00Z It was thought less than 20 years ago that the expansion of the Universe after the Big Bang might be slowing down under the gravitational attraction of all its matter. Camera seeks dark energy clues 2015-02-14T05:00:00Z Sometimes spiral galaxies will collide in spectacular mergers, drawn together by gravitational attraction. The Wondrous Lives of Galaxies [Slide Show] 2014-12-01T05:00:00Z Whenever there are masses in the universe, they will interact via the force of gravitational attraction. Astronomy 2016-10-13T00:00:00Z Some of these rotate slowly enough for the gravitational attraction between the particles to hold them together. Near-Earth asteroid held together by weak force 2014-08-12T04:00:00Z The conventional method measures the torque caused by gravitational attraction on the weights attached to a rotating balance, an experiment that was first conducted by English scientist Henry Cavendish in 1798. Quantum method closes in on gravitational constant 2014-06-17T04:00:00Z The only way to explain the way these stars are observed to behave is if there is additional gravitational attraction due to some kind of invisible form of matter, which surrounds the stars. How close are we to finding dark matter? 2013-11-18T13:05:22Z The gravitational attraction of black holes is so strong that even light cannot escape their pull, making these super-dense objects invisible to outside observers and almost indistinguishable from one another. Black Holes May Have 'Hair' 2013-10-21T19:15:00.377Z The high entry speed was a result of acceleration by the strong gravitational attraction of Jupiter. Astronomy 2016-10-13T00:00:00Z If 1950 DA is a rubble-pile asteroid, then something more than gravitational attraction must be holding it together as it spins around. Near-Earth asteroid held together by weak force 2014-08-12T04:00:00Z Then, the gravitational attraction from the main cluster will pull it back into the cluster, making a sort of orbit. How About a Hug?! Nearby Galaxy Cluster Has Giant Plasma Arms 2013-09-20T15:45:05.010Z General relativity normally associates a gravitational attraction to energy density. [Article] A Particle Consistent with the Higgs Boson Observed with the ATLAS Detector at the Large Hadron Collider 2012-12-20T21:55:01.327Z That’s the movement of the star as it spins around it’s center of mass, which is caused by the gravitational attraction of the planet. Astronomers Find Planets Within A Cluster Of Stars 2012-09-16T04:52:55Z Newton also concluded that the gravitational attraction between two bodies must be proportional to their masses. Astronomy 2016-10-13T00:00:00Z Another source of error arises from the varying effects of gravitational attraction. Mount Everest the Reconnaissance, 1921 2012-04-12T02:00:28.417Z In them the sun's repulsion is perhaps twice its gravitational attraction, and hydrocarbons in some form appear to be responsible for tails of this character. Astronomy: The Science of the Heavenly Bodies 2012-03-17T02:01:02.630Z Their mutual gravitational attraction will ultimately cause them to collapse inward, in manifest disagreement with an apparently static universe. A Universe from Nothing: Einstein, the Belgian Priest and the Puzzle of the Big Bang 2012-02-10T14:45:04.437Z 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 Though entirely predictable over times of a few centuries, the orbits of Earth-approaching asteroids are unstable over long time spans as they are tugged by the gravitational attractions of the planets. Astronomy 2016-10-13T00:00:00Z Trojan asteroids typically do not orbit right at the Lagrangian points but in tadpole-shaped loops around them, due to the gravitational attraction of other bodies in the solar system. First Asteroid Companion of Earth Discovered at Last 2011-07-27T23:15:05.557Z This immediately explained why the gravitational attraction between bodies of small mass, such as two apples, had never been noticed. Gravity, by George Gamow [Special Archive Article] 2011-03-04T13:45:00.433Z "Following the close approach, the Earth's gravitational attraction modified the object's orbit to an Aten-class orbit where the asteroid spends almost all of its time inside the Earth's orbit." Record-setting 'near miss' of Earth dramatically shifted tiny asteroid's orbit 2011-02-10T23:45:14.287Z Newton took into account gravitational attraction and centrifugal action, and he calculated the ratio of the axes of the spheroid to be 230:229. Development of Gravity Pendulums in the 19th Century Contributions from the Museum of History and Technology, Papers 34-44 On Science and Technology, Smithsonian Institution, 1966 2011-01-22T03:00:16.753Z But calculations show that the gravitational attraction of the many nearby stars will cause the black hole to zigzag randomly within the cluster and will prevent the formation of an accretion disk. Astronomy 2016-10-13T00:00:00Z That is, if only Sol's overwhelming gravitational attraction didn't provide a free-sliding path to hell with no choice of alternates in the meanwhile.... Deepfreeze Having postulated that the gravitational attraction between two bodies is proportional to the product of their masses, Newton then investigated the dependence on distance. Gravity, by George Gamow [Special Archive Article] 2011-03-04T13:45:00.433Z So the whole red spot is highly magnetized, which somehow upsets natural gravitational attraction. The Red Hell of Jupiter Utilizes gravitational attraction and reversal as a propelling force and can go like the Old Boy himself. Astounding Stories of Super-Science, November, 1930 Reckon in the gravitational attraction of the planets, and you'll begin to get an idea of the complexity of it. Astounding Stories of Super-Science, May, 1930 Yes, the inter-sliding series of plates, that reversed or neutralized gravitational attraction at a touch, were in alignment. The Planetoid of Peril Ha, you big plexidomes still believe the Earth was condensed from a filament, and was ejected by the sun under the gravitational attraction of a big star passing close to the Earth's surface. Operation Earthworm A vast amount of energy is needed, Carson, since the gravitational attraction of the planet you call Jupiter is enormous. The Copper-Clad World "Then gravitational attraction of some sort does exist in the dead-area after all!" The Sargasso of Space It has long been understood that the system of the rings must be rotating around Saturn, for if they were not in motion his intense gravitational attraction would quickly tear them in pieces. Astronomy of To-day A Popular Introduction in Non-Technical Language The light-pressure varies with the surface of the particle upon which it is exercised; the gravitational attraction varies with the mass or volume. The Astronomy of the Bible An Elementary Commentary on the Astronomical References of Holy Scripture The Earth has other slight motions called perturbations, which are produced by the gravitational attraction of other members of the solar system. The Astronomy of Milton's 'Paradise Lost' The efficacy of solar electrical repulsion relatively to solar gravitational attraction grows, consequently, as the size of the particle diminishes. A Popular History of Astronomy During the Nineteenth Century Fourth Edition The dead area," Crain told them, "is a region of space ninety thousand miles across within Neptune's orbit, in which the ordinary gravitational attractions of the solar system are dead. The Sargasso of Space As might be gathered from their extreme tenuity, comets are so exceedingly small in mass that they do not appear to exert any gravitational attraction upon the other bodies of our system. Astronomy of To-day A Popular Introduction in Non-Technical Language More than he realized, the exotic Arabic woman and her young daughter held a greater gravitational attraction than the cloud-black camera. Travel Tales in the Promised Land (Palestine) We must trust to our momentum to carry us past this point, and into space where the gravitational attraction of the other planet is paramount. Pharaoh's Broker Being the Very Remarkable Experiences in Another World of Isidor Werner “Action at a distance” has long ceased to be recognized as a possible phenomenon, although up to the present, the medium and method of gravitational attraction have not yet been discovered. Aether and Gravitation As we get farther out, our weight will decrease as the gravitational attraction drops off, but we would need such vast amounts of energy that they are beyond human conception. Islands of Space When it is new moon the gravitational attractions of both sun and moon are clearly acting together from precisely the same direction, and, therefore, the tide will be pulled up higher than at other times. Astronomy of To-day A Popular Introduction in Non-Technical Language Venus and Earth and all the planets act like giant vacuum cleaners of space, pulling into themselves all the space debris and meteors within millions of miles by their gravitational attraction.” The Black Star Passes The principal controlling fact is the reduced gravitational attraction of Mars, which will make things weigh about one-third as much as on the Earth. Pharaoh's Broker Being the Very Remarkable Experiences in Another World of Isidor Werner From rather unreliable observations, the planet seemed a good deal smaller than the moon, and yet so dense as to have a greater gravitational attraction. Out Around Rigel The experiment consists in measuring the rotation of the suspended system, caused by the gravitational attraction of two lead spheres, each twelve inches in diameter, acting on the two small lead balls. The New Heavens In accordance with Newton's Law, gravitational attraction increased rapidly on approaching a body. Rip Foster in Ride the Gray Planet The main generator had been damaged, no doubt, so it stopped working, and the gravitational attraction of the photons wasn't enough, without its influence to hold them bound too long. The Black Star Passes How extended we cannot say; the nature of the motions we know not; but the kinetic entities differed from matter in the one important particular of not possessing gravitational attraction. The Birth-Time of the World and Other Scientific Essays Kant's idea of nuclei or centers of gravitational attraction, scattered here and there throughout the chaotic mass, which grew into the planets and their satellites, is very valuable. Popular Science Monthly Oct, Nov, Dec, 1915 — Volume 86 Yet in the case of some of the larger stars Eddington calculates that one-half of their mass is supported by radiation pressure, and this against their enormous gravitational attraction. The New Heavens To counter gravitational attraction took velocity, which meant consumption of fuel. Rip Foster in Ride the Gray Planet They had bound light, light held by the gravitational attraction for itself, after condensing it in their apparatus, but they had what amounted to a gas—gaseous light. The Black Star Passes Now there is an attraction between the satellite and the crust of the planet; the same gravitational attraction which exists between every particle of matter in the universe. The Birth-Time of the World and Other Scientific Essays Transportation is effected by means of flying ships actuated by the control of gravitational attraction. The Planet Mars and Its Inhabitants, a psychic revelation The pulmonary distress caused by the denser atmosphere and greater gravitational attraction was only too evident in the convulsive movements of the outer skin. The War of the Worlds The reason is that the pressure varies in proportion to the surface of the body acted upon, while the gravitational attraction is proportional to the volume, or the total amount of matter in the body. Curiosities of the Sky So huge were they, that in the combined mass of the fleet there rested sufficient gravitational attraction to force the little fliers to form orbits about them. The Black Star Passes |
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