| 单词 | Coulomb |
| 例句 | In most cases, the exciton pairs are bound by electrical, or electrostatic, forces, also known as Coulomb interactions. Physicists find evidence for magnetically bound excitons 2023-10-05T04:00:00Z For example, a charged rubber comb attracts neutral bits of paper from a distance via the Coulomb force. College Physics for AP Courses 2015-08-12T00:00:00Z Both models have a central positively charged nucleus with electrons moving about the nucleus in accordance with the Coulomb electrostatic potential. Chemistry 2019-02-14T00:00:00Z Coulomb has been on the injured list since May 28. Tellez hits pair of 3 HRs, Brewers top Twins 10-4 for sweep 2022-07-27T04:00:00Z Suppose we have a stationary charge of q Coulombs at the origin, existing in a vacuum. Calculus, Volume 3 2016-03-30T00:00:00Z At a June meeting with around 20 of Apple’s key distribution channel partners, Coulomb outlined a new program aimed at eliminating discounting and improving the shopping experience, a source familiar with the matter said. Apple's mettle in India tested in squabble over anti-spam app 2018-08-09T04:00:00Z To do this, make a list of five properties for the Coulomb force field analogous to the five properties listed for electric field lines. College Physics for AP Courses 2015-08-12T00:00:00Z At a June meeting with around 20 of Apple’s key distribution channel partners, Coulomb outlined a new programme aimed at eliminating discounting and improving the shopping experience, a source familiar with the matter said. Apple's mettle in India tested in squabble over anti-spam app 2018-08-09T04:00:00Z Bill once brought aboard an intern named Yves Coulomb, primarily because the young man shared a last name with an 18th-century French scientist who studied static electricity. Common-sense solutions are sometimes the best ones 2017-01-24T05:00:00Z Major projects the group is working on include Coulomb Phase 2 and Appomattox in the Gulf of Mexico and Malikai off the coast of Malaysia. Shell begins production at world's deepest underwater oil field 2016-09-11T04:00:00Z These two observations are consistent with a "Coulomb explosion", where the metal becomes positively charged and those charges push each other outward, causing the spikes to form. Metal explosions 'driven by charge' 2015-01-26T05:00:00Z Compare each item in your list of Coulomb force field properties with those of the electric field—are they the same or different? College Physics for AP Courses 2015-08-12T00:00:00Z The researchers explain how they discovered that the electrostatic, or Coulomb, force is behind the dramatic but erratic behaviour of bulk sodium and potassium. Sodium's explosive secrets revealed 2015-01-25T05:00:00Z Perhaps Coulomb would have received it for his law of electrostatics, formulated in 1798 and Benjamin Franklin might even have received it for demonstrating that lightning is a form of electricity. It’s the End of Fundamental Physics... Again 2014-04-16T14:48:52Z In – the yellow ellipse indicates the outer boundary of the Coulomb crystals, and in the circle indicates the position of the single MgH ion. Efficient rotational cooling of Coulomb-crystallized molecular ions by a helium buffer gas 2014-04-04T18:26:18.163Z We report Coulomb drag measurements between vertically integrated quantum wires separated by a barrier only 15 nanometers wide. [Report] 1D-1D Coulomb Drag Signature of a Luttinger Liquid 2014-02-06T19:26:25.955Z The effect of polarization can be best explained in terms of the characteristics of the Coulomb force. College Physics for AP Courses 2015-08-12T00:00:00Z At this separation, the residual Coulomb attraction between charges is at or below thermal energies, so that electron and hole separate freely. [Report] Ultrafast Long-Range Charge Separation in Organic Semiconductor Photovoltaic Diodes 2014-01-30T19:25:59.390Z A succession of ionization events were induced by passage through a carbon foil that culminated in a Coulomb explosion of mutually repelling nuclei. [Report] Imaging the Absolute Configuration of a Chiral Epoxide in the Gas Phase 2013-12-04T22:56:28.657Z In – the yellow ellipse indicates the outer boundary of the Coulomb crystals, and in the circle indicates the position of the single MgH ion. Efficient rotational cooling of Coulomb-crystallized molecular ions by a helium buffer gas 2014-04-04T18:26:18.163Z Some of the models for this process predict a nonmonotonic temperature dependence of the resulting Coulomb drag voltage, with an upturn occurring at a certain low temperature T*. [Report] 1D-1D Coulomb Drag Signature of a Luttinger Liquid 2014-02-06T19:26:25.955Z The Coulomb force between the closest ends of the molecules and the charge on the plates is attractive and very strong, since they are very close together. College Physics for AP Courses 2015-08-12T00:00:00Z But Newton’s law deals with very large mass, while Coulomb’s law deals with objects with little mass but large charges. When Science Meets Fiction 2013-01-28T03:15:00.220Z "The electric field of the ion trap holds charged particles in place and Coulomb repulsion causes them to spontaneously form a spatial ring crystal," Zhang said. Eternal Clock Could Keep Time After Universe Dies 2012-09-25T22:15:00.270Z Daniel Coulomb: "A tree surviving between the buildings of Sao Paulo, Brazil, home to more than 11 million people." Your pictures: Concrete jungle 2012-06-21T08:43:36Z But by Coulomb's measure the quantity remains unaltered. Popular scientific lectures 2012-04-24T02:00:17.273Z The most important of these are the Coulomb force and diffusion. College Physics for AP Courses 2015-08-12T00:00:00Z Also, gravitation is just attraction; Coulomb’s law incorporates both attraction and repulsion. When Science Meets Fiction 2013-01-28T03:15:00.220Z Coulomb showed long ago that the surface-density of electricity at any point on a conductor is proportional to the resultant field-intensity just outside the surface at that point. Lord Kelvin An account of his scientific life and work 2012-04-06T02:00:32.097Z The bending of beams was also studied by Coulomb and Robison, but Young appears to have been almost the first to apply the theory of elasticity to the statics of structures. Heroes of Science: Physicists 2012-01-17T03:00:17Z In 1785 Coulomb constructed his torsion balance, by which he was enabled to measure the repulsion of electrified bodies. Popular scientific lectures 2012-04-24T02:00:17.273Z The Coulomb force prevents the ions from diffusing across in their entirety. College Physics for AP Courses 2015-08-12T00:00:00Z The physics literate no doubt spotted the problem: the writers have conflated Coulomb’s Law with Newton’s Law of Universal Gravitation. When Science Meets Fiction 2013-01-28T03:15:00.220Z This, by Coulomb's law, stated above, gives that field-intensity just outside the surface which exists for the actual distribution, and therefore, as can be proved, gives the same field everywhere else outside the surface. Lord Kelvin An account of his scientific life and work 2012-04-06T02:00:32.097Z With his torsion-balance, Coulomb obtained the same law, but Cavendish's method is much easier to carry out, and admits of much greater accuracy than that of Coulomb. Heroes of Science: Physicists 2012-01-17T03:00:17Z Thus the notion of mass, for example, was imitated by Coulomb in the notion of quantity of electricity. Popular scientific lectures 2012-04-24T02:00:17.273Z Diffusion moves the K+ and Cl- ions in the direction shown, until the Coulomb force halts further transfer. College Physics for AP Courses 2015-08-12T00:00:00Z The software enables Coulomb to offer a real-time map of charging stations, which can be consulted at Mychargepoint.net on the Internet, as well as through an app for mobile phones. Posting: Posting ? Charging Stations Await Cars 2011-12-10T01:57:15Z Coulomb = The measure of quantity, analogous to the gallon. Marvels of Scientific Invention An Interesting Account in Non-technical Language of the Invention of Guns, Torpedoes, Submarine Mines, Up-to-date Smelting, Freezing, Colour Photography, and many other recent Discoveries of Science 2011-11-19T03:00:24.517Z Coulomb, koo-lom′, n. the unit of quantity in measuring current electricity: the quantity furnished by a current of one ampere in one second. Chambers's Twentieth Century Dictionary (part 1 of 4: A-D) 2011-10-11T02:01:08.990Z Coulomb proved that the magnitude of the mutual mechanical force exerted between two charged bodies depends on the amounts of the charges and the distance between them. The New Gresham Encyclopedia Volume 4, Part 2: Ebert to Estremadura 2011-04-14T02:00:56.200Z This sodium-potassium pump is an example of active transport, wherein cell energy is used to move ions across membranes against diffusion gradients and the Coulomb force. College Physics for AP Courses 2015-08-12T00:00:00Z The Electrification Coalition, an organization of pro-EV business leaders from companies including Nissan, Federal Express, Coda Automotive and Coulomb Technologies, would take issue with that conclusion, however. Raising the Volt-Age: Is Obama's Goal of 1 Million Electric Vehicles on U.S. Highways by 2015 Realistic? 2011-02-18T16:15:00.260Z Coulomb proved that this mechanical force varies inversely as the square of the distance between the centres of the spheres. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 3 "Electrostatics" to "Engis" 2011-02-06T03:00:53.093Z Coulomb’s work received better publication than Cavendish’s at the time of its accomplishment, and provided a basis on which mathematicians could operate. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 2 "Ehud" to "Electroscope" 2011-01-29T03:00:23.777Z GE's already got competition on the electric charging station front from companies like Better Place, Coulomb Technologies and AeroVironment . Yves Behar's Latest Design: GE's WattStation 2010-07-13T22:15:00Z Magnetic force is as important as the electrostatic or Coulomb force. College Physics for AP Courses 2015-08-12T00:00:00Z "Two chargers are needed for each car—one where you live and one where you work," says Richard Lowenthal, chief executive officer of Coulomb Technologies, a California-based maker of electric car charging stations. Mapping Out an Electric-Car Future 2010-06-03T18:23:00Z Coulomb proved the proportionality of electric surface force to density, but the above numerical relation E = 4πσ was first established by Poisson. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 3 "Electrostatics" to "Engis" 2011-02-06T03:00:53.093Z Adopting the hypothesis of two fluids, Coulomb investigated experimentally and theoretically the distribution of electricity on the surface of bodies by means of his proof plane. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 2 "Ehud" to "Electroscope" 2011-01-29T03:00:23.777Z And Coulomb Technologies in Campbell, Calif., is on track to install more than 1,000 curbside recharging stations for electric cars across the U.S. this year, up from just 100 last year. 2009-07-16T21:00:00Z This results in a reduction in the strength of the Coulomb interaction. College Physics for AP Courses 2015-08-12T00:00:00Z Coulomb is one of at least a half-dozen companies aiming to win some of that cash and build the fuel stations of the 21st century. Mapping Out an Electric-Car Future 2010-06-03T18:23:00Z Coulomb proved experimentally that the electric force just outside a conductor at any point is proportional to the electric density at that point. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 3 "Electrostatics" to "Engis" 2011-02-06T03:00:53.093Z All the men after whom modes and units of electricity are named--Galvani, Volta, Coulomb, Ampere, Ohm--were not only members of the Church, but what would be even called devout Catholics. The Popes and Science The History of the Papal Relations to Science During the Middle Ages and Down to Our Own Time Coulomb is distinguished in the history alike of mechanics and of electricity and magnetism. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 6 "Coucy-le-Château" to "Crocodile" Coulomb's law gives the magnitude of the force between point charges. College Physics for AP Courses 2015-08-12T00:00:00Z This law was established and proved by Coulomb by means of a delicate instrument known as the Torsion Balance, with which he also established the law of inverse squares. Aether and Gravitation It should be stated here that, in the whole correspondence revealed by Mrs. Coulomb, Colonel Olcott appears as the dupe of Madame Blavatsky, and in no case accessory to imposture unless by an amazing credulity. The Arena Volume 4, No. 23, October, 1891 It would be an injustice not to mention the other shrines in detail after the prominence that has been given to the abbeys of Coulombs and Charroux; so the history of another will be given. History of Circumcision from the Earliest Times to the Present Moral and Physical Reasons for its Performance Now the Society has gone along those lines, along which every religion has gone, from the time of the Coulomb trial. London Lectures of 1907 The Coulomb force is extraordinarily strong compared with the gravitational force, another basic force—but unlike gravitational force it can cancel, since it can be either attractive or repulsive. College Physics for AP Courses 2015-08-12T00:00:00Z This law was proved by Coulomb by means of an instrument known as Coulomb's Torsion Balance, and I must refer the reader to any work on electricity for a full establishment of this law. Aether and Gravitation The letters are brilliant, and Mrs. Coulomb is sometimes worsted in them. The Arena Volume 4, No. 23, October, 1891 Dragged as far as the village of Coulombs and being unable to walk further, the unfortunate man received a bayonet wound in the forehead and a revolver bullet through the heart. The New York Times Current History, A Monthly Magazine The European War, March 1915 After the Coulomb difficulty there was a cessation almost entirely of these phenomena in the Theosophical Society. London Lectures of 1907 The electrostatic or Coulomb force is conservative, which means that the work done on q is independent of the path taken. College Physics for AP Courses 2015-08-12T00:00:00Z The latter contains Nobel and Schoene elutriators, together with viscosimeters of the flow and the Coulomb and Clark electrical types, sieves, voluminometers, colorimeters, vernier shrinkage gauges, micrometers, microscopes, and the necessary balances. Transactions of the American Society of Civil Engineers, vol. LXX, Dec. 1910 Federal Investigations of Mine Accidents, Structural Materials and Fuels. Paper No. 1171 Mrs. Coulomb, after her confession, wrote me a long letter, which shows no trace of the style or ability disclosed in the Blavatsky letters. The Arena Volume 4, No. 23, October, 1891 Coulomb is the quantity of electricity defined by the condition that in the current of an amp�re the section of the conductor is traversed by a coulomb per second. Scientific American Supplement, No. 312, December 24, 1881 This effect was the strongest opposite the edges and projecting parts of the boiler, and weaker opposite the sides, or those extended portions of the surface which, according to Coulomb's results, have the weakest charge. Experimental Researches in Electricity, Volume 1 Although the atom remains neutral, it can now be the source of a Coulomb force, since a charge brought near the atom will be closer to one type of charge than the other. College Physics for AP Courses 2015-08-12T00:00:00Z Five miles to the northward of Point Coulomb, we passed a reef, lying a mile from the shore, with seven fathoms one mile seaward of it. Discoveries in Australia, Volume 1. With an Account of the Coasts and Rivers Explored and Surveyed During The Voyage of H.M.S. Beagle, in the Years 1837-38-39-40-41-42-43. By Command of the Lords Commissioners of the Admiralty. Also a Narrative Of Captain Owen Stanley's Visits to the Islands in the Arafura Sea. However, it was a sufficient confession that the Theosophists receded from a proposal to test all these things, including the handwriting of the letters, before a law court, for which the Coulombs were eager. The Arena Volume 4, No. 23, October, 1891 At four o'clock we were abreast of Captain Baudin's Point Coulomb, which M. De Freycinet describes to be the projection at which the Red Cliffs commence. Narrative of a Survey of the Intertropical and Western Coasts of Australia Performed between the years 1818 and 1822 — Volume 2 Electrometer.—The measuring instrument I have employed has been the torsion balance electrometer of Coulomb, constructed, generally, according to his directions235, but with certain variations and additions, which I will briefly describe. Experimental Researches in Electricity, Volume 1 Use the characteristics of the Coulomb force to explain why capacitance should be proportional to the plate area of a capacitor. College Physics for AP Courses 2015-08-12T00:00:00Z He pointed out that the experimental results of William Snow Harris were in accordance with the laws of Coulomb. Heroes of the Telegraph The Coulomb story is that a pasteboard doll, with half-shrouded head, superimposed on the shoulders of Mr. Coulomb, himself orientally draped, moved about in the dusk at Adyar when an “astral” apparition was wanted. The Arena Volume 4, No. 23, October, 1891 The red cliffs extend for four miles to the southward of Point Coulomb, and are then superseded by a low coast, composed alternately of rocky shores and sandy beaches. Narrative of a Survey of the Intertropical and Western Coasts of Australia Performed between the years 1818 and 1822 — Volume 2 The upper end of the glass thread was attached, as in Coulomb's original electrometer, to an index, which had its appropriate graduated circle, upon which the degree of torsion was ultimately to be read off. Experimental Researches in Electricity, Volume 1 In one of the classic nuclear physics experiments at the beginning of the 20th century, an alpha particle was accelerated toward a gold nucleus, and its path was substantially deflected by the Coulomb interaction. College Physics for AP Courses 2015-08-12T00:00:00Z Coulomb was the maker of the first instrument for measuring a current, which was known as the torsion balance. Steam, Steel and Electricity In one of Madame Blavatsky’s letters to Mrs. Coulomb, she says, defiantly, “I have a thousand strings to my bow, and God Himself could not open the eyes of those who believe in me.” The Arena Volume 4, No. 23, October, 1891 At last, near Coulombs, after a march of two hours and a half, a man of seventy-three, called Jourdaine, falls. Towards the Goal This curious sheath"—he pointed to a cylindrical jacket around part of the rifle barrel—"is a Coulomb silencer, which reduces a small-arm report almost to a whisper. Average Jones The result is two layers of charge right on the membrane, with diffusion being balanced by the Coulomb force. College Physics for AP Courses 2015-08-12T00:00:00Z Coulomb found that not only iron, but all substances are more or less magnetic, and Faraday showed in 1845 that while some are attracted by a magnet others are repelled. The Story of Electricity Afterwards Cavendish of England, Coulomb of France, Galvani of Italy, all brought new bricks to the pile. The Age of Invention : a chronicle of mechanical conquest Coulomb repulsion between the two ends then succeeds in fissioning the nucleus, which pops like a water drop into two large pieces and a few neutrons. College Physics for AP Courses 2015-08-12T00:00:00Z In the same way, the Coulomb force field surrounding any charge extends throughout space. College Physics for AP Courses 2015-08-12T00:00:00Z Yet the magnetic force is more complex, in both the number of factors that affects it and in its direction, than the relatively simple Coulomb force. College Physics for AP Courses 2015-08-12T00:00:00Z QUANTITY—Q.—The Coulomb is the quantity of electricity conveyed by an ampere in a second. The Story of Electricity Both the magnitude and direction of the Coulomb force field depend on Q and the test charge q . College Physics for AP Courses 2015-08-12T00:00:00Z Figure 18.28 The Coulomb force field due to a positive charge Q is shown acting on two different charges. College Physics for AP Courses 2015-08-12T00:00:00Z The Coulomb force field is thus not unique at any point in space, because it depends on the test charges q1 and q2 as well as the charge Q . College Physics for AP Courses 2015-08-12T00:00:00Z Maxwell brought together all the work that had been done by brilliant physicists such as Oersted, Coulomb, Gauss, and Faraday, and added his own insights to develop the overarching theory of electromagnetism. College Physics for AP Courses 2015-08-12T00:00:00Z According to Coulomb's law, the force it exerts on a test charge q is F = k|qQ| / r 2 . College Physics for AP Courses 2015-08-12T00:00:00Z The effect of a Coulomb field generated by a charged object may be reduced or blocked by other nearby charged objects. College Physics for AP Courses 2015-08-12T00:00:00Z One might say that screening makes the Coulomb force a short range force rather than long range. College Physics for AP Courses 2015-08-12T00:00:00Z Other ions of importance in biology that can reduce or screen Coulomb interactions are Na+ , and K+ , and Cl– . College Physics for AP Courses 2015-08-12T00:00:00Z Also implied is the existence of previously unknown nuclear forces to counteract the huge repulsive Coulomb forces among the positive charges in the nucleus. College Physics for AP Courses 2015-08-12T00:00:00Z Are the direction and magnitude of the Coulomb force unique at a given point in space? College Physics for AP Courses 2015-08-12T00:00:00Z You may assume that the proton is stationary and the centripetal force is supplied by Coulomb attraction. College Physics for AP Courses 2015-08-12T00:00:00Z This cloud is shifted by the Coulomb force so that the atom on average has a separation of charge. College Physics for AP Courses 2015-08-12T00:00:00Z In the atom, the attractive Coulomb force is analogous to gravitation in the planetary system. College Physics for AP Courses 2015-08-12T00:00:00Z It is especially important to note two things—the strong nuclear force is about 100 times stronger than the Coulomb force, and the nuclear forces are shorter in range compared to the Coulomb force. College Physics for AP Courses 2015-08-12T00:00:00Z We start by noting the centripetal force causing the electron to follow a circular path is supplied by the Coulomb force. College Physics for AP Courses 2015-08-12T00:00:00Z Added protons, however, feel the repulsion of all other protons, since the Coulomb force is longer in range. College Physics for AP Courses 2015-08-12T00:00:00Z At higher A s, the Coulomb repulsion progressively reduces the binding energy per nucleon, because the nuclear force is short ranged. College Physics for AP Courses 2015-08-12T00:00:00Z Figure 31.28 The nuclear force is attractive and stronger than the Coulomb force, but it is short ranged. College Physics for AP Courses 2015-08-12T00:00:00Z Coulomb repulsion grows for progressively heavier nuclei, but nuclear attraction remains about the same, and so BE / A becomes smaller. College Physics for AP Courses 2015-08-12T00:00:00Z In larger nuclei, the range of the nuclear force, shown for a single nucleon, is smaller than the size of the nucleus, but the Coulomb repulsion from all protons reaches all others. College Physics for AP Courses 2015-08-12T00:00:00Z If the nucleus is large enough, the Coulomb repulsion can add to overcome the nuclear attraction. College Physics for AP Courses 2015-08-12T00:00:00Z The slope of the hill outside the bowl is analogous to the repulsive Coulomb potential for a nucleus, such as for an α particle outside a positive nucleus. College Physics for AP Courses 2015-08-12T00:00:00Z The major obstruction to fusion is the Coulomb repulsion between nuclei. College Physics for AP Courses 2015-08-12T00:00:00Z An α particle outside the range of the nuclear force feels the repulsive Coulomb force. College Physics for AP Courses 2015-08-12T00:00:00Z If the nuclei have enough kinetic energy to get over the Coulomb repulsion hump, they combine, release energy, and drop into a deep attractive well. College Physics for AP Courses 2015-08-12T00:00:00Z Since fewer nucleons are in contact, the repulsive Coulomb force is able to break the nucleus into two parts with some neutrons also flying away. College Physics for AP Courses 2015-08-12T00:00:00Z |
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