| 单词 | dipole |
| 例句 | The approved wire dipole antennas were supposed to be placed within a two-by-four-foot area on the wall—where, apparently, they did no good at all. Newjack: Guarding Sing Sing 2000-01-01T00:00:00Z At this point, the star’s magnetic field was arranged as a relatively tidy dipole, where one pole is positively charged, and the other pole negatively charged. The Sun’s Magnetic Poles Are Vanishing 2023-10-20T04:00:00Z At solar minimum, the sun's magnetic field is strong and organized, with two clear poles like a normal dipole magnet, James said. Solar Maximum Could Hit Us Harder And Sooner Than We Thought 2023-07-04T04:00:00Z Magnetic fields observed in nature always seem to be produced either by moving charged objects or by magnetic dipoles or combinations of dipoles and never by single poles. College Physics for AP Courses 2015-08-12T00:00:00Z You can display or hide the bond moments, molecular dipoles, and partial charges at the right. Chemistry 2019-02-14T00:00:00Z Climate projections call for this positive phase of the Indian Ocean dipole, as it’s known, to grow in strength and duration with continued global warming. In ominous sign for global warming, feedback loop may be accelerating methane emissions 2022-07-12T04:00:00Z But unlike Earth’s magnetic field or that of a bar magnet, the sun’s magnetism is patchy and highly fluid, even during its dipole stage. The Sun’s Magnetic Poles Are Vanishing 2023-10-20T04:00:00Z In a synchrotron, magnets called dipoles sandwich the tubular vacuum chamber through which the electrons travel, supplying the vertical field that bends the particles’ trajectory around the ring. Rebirth of leading European facility promises revolutionary advances in x-ray science 2020-07-15T04:00:00Z A magnetic dipole placed in a magnetic field, such as the ones created by a magnet or the Earth, will tend to align with the magnetic field vector. College Physics for AP Courses 2015-08-12T00:00:00Z Thus, they are less tightly held and can more easily form the temporary dipoles that produce the attraction. Chemistry 2019-02-14T00:00:00Z Prof Palmer said the jetstream appeared to be influenced by a climate phenomenon known as the Indian dipole – an irregular oscillating current in the Indian Ocean. Climate computing power 'needs more cash' 2020-06-04T04:00:00Z This time the dipole state will occur around the turn of the 2030s. The Sun’s Magnetic Poles Are Vanishing 2023-10-20T04:00:00Z To keep it focused, more complex magnets called quadrupoles fit between the dipoles and act like lenses. Rebirth of leading European facility promises revolutionary advances in x-ray science 2020-07-15T04:00:00Z This creates two centers of equal and opposite charges—what is called a dipole, as illustrated in Figure 18.37. College Physics for AP Courses 2015-08-12T00:00:00Z Additionally, we cannot attribute this difference in boiling points to differences in the dipole moments of the molecules. Chemistry 2019-02-14T00:00:00Z A family of compounds known as complex oxides are of particular interest, because they host permanent electric and magnetic dipoles, thereby opening the door to applications that require permanent states. Electric control of a spin current has potential for low-power computing 2020-04-21T04:00:00Z Inside each of these building blocks, the atoms are arranged in a so-called electric dipole, with more positive charges on one side and more negative charges on the other. Transparent, power-producing crystals could lead to invisible robots, self-powered touch screens 2020-01-15T05:00:00Z The dipoles bend electrons slightly different amounts depending on their energies, causing the electron beam to spread. Rebirth of leading European facility promises revolutionary advances in x-ray science 2020-07-15T04:00:00Z The magnitude of the dipole is called the dipole moment. College Physics for AP Courses 2015-08-12T00:00:00Z Both molecules are polar and exhibit comparable dipole moments. Chemistry 2019-02-14T00:00:00Z Such a phenomenon is commonly associated with the reversal of electric dipoles in ferroelectric materials, and is at the core of the definition of electrical polarization in the modern theory of ferroelectricity13. Electric control of a spin current has potential for low-power computing 2020-04-21T04:00:00Z Normally PMN-PT is opaque, as the separate groups of dipoles scatter light in all directions. Transparent, power-producing crystals could lead to invisible robots, self-powered touch screens 2020-01-15T05:00:00Z A 2018 study in the journal Nature Communications found the number of extreme positive dipole events goes up as climate heating continues. Explainer: what are the underlying causes of Australia's shocking bushfire season? 2020-01-12T05:00:00Z Matter has a property called magnetic dipole moment. College Physics for AP Courses 2015-08-12T00:00:00Z A second atom can then be distorted by the appearance of the dipole in the first atom. Chemistry 2019-02-14T00:00:00Z Though it is too early to quantify any link between climate change and the dipole’s recent behavior, scientists have warned that global warming is shifting the cycle, making extended Australian drought more likely. Opinion | Australia’s apocalyptic fires are a warning to the world 2020-01-06T05:00:00Z The dipole's positive phase this year - the strongest for six decades - means warmer sea temperatures in the western Indian Ocean region, with the opposite in the east. The climate phenomenon linking floods and bushfires 2019-12-06T05:00:00Z Positive dipole events draw moisture away from Australia and tend to deliver less rainfall. Explainer: what are the underlying causes of Australia's shocking bushfire season? 2020-01-12T05:00:00Z A current loop always produces a magnetic dipole—that is, a magnetic field that acts like a north pole and south pole pair. College Physics for AP Courses 2015-08-12T00:00:00Z The electrons of the second atom are attracted toward the positive end of the first atom, which sets up a dipole in the second atom. Chemistry 2019-02-14T00:00:00Z The extreme weather is driven primarily by the Indian Ocean dipole, a climate system in which the surface temperature of the sea is alternatively greater in the ocean’s west and its east. UN peacekeepers intervene after violent clashes in South Sudan 2019-12-06T05:00:00Z "The key culprit of our current and expected conditions is one of the strongest positive Indian Ocean dipole events on record," he says. The climate phenomenon linking floods and bushfires 2019-12-06T05:00:00Z The Indian Ocean dipole was in a “positive phase”, meaning the Indian Ocean off Australia’s north west was cooler than normal and the west of the ocean was warmer. Explainer: what are the underlying causes of Australia's shocking bushfire season? 2020-01-12T05:00:00Z An uneven distribution of the positive and negative charges within a polar molecule produces a dipole. College Physics for AP Courses 2015-08-12T00:00:00Z Chloroethane, however, has rather large dipole interactions because of the Cl-C bond; the interaction, therefore, is stronger, leading to a higher boiling point. Chemistry 2019-02-14T00:00:00Z The term dipole means two "poles" or two areas of differences. Why the floods in East Africa are so bad 2019-12-02T05:00:00Z Extreme climate and weather events caused by the dipole are predicted to become more common in the future as greenhouse gas emissions increase. The climate phenomenon linking floods and bushfires 2019-12-06T05:00:00Z A 2009 study found that positive dipole events “precondition” the south of the country for dangerous bushfire seasons and that these events were becoming more common. Explainer: what are the underlying causes of Australia's shocking bushfire season? 2020-01-12T05:00:00Z Electric dipoles are treated qualitatively in this course as a teaching analogy to facilitate student understanding of magnetic dipoles. College Physics for AP Courses 2015-08-12T00:00:00Z Crystals of NaCl dissolve in water, a polar liquid with a very large dipole moment, and the individual ions become strongly solvated. Chemistry 2019-02-14T00:00:00Z “The key culprit of our current and expected conditions is one of the strongest positive Indian Ocean dipole events on record,” Watkins said. Fire, drought, heatwaves: Australia prepares for tough summer 2019-11-27T05:00:00Z One leading candidate is the axion — a light neutral particle that was originally postulated to explain why the neutron lacks a measurable electric dipole moment2. Link between antimatter and dark matter probed 2019-11-12T05:00:00Z The researchers designed a lunar telescope array that would include hundreds of simple dipole antennas laid flat on the ground. Could humanity’s return to the moon spark a new age of lunar telescopes? 2019-07-18T04:00:00Z A third charge, −q is placed equidistant from the dipole charges. College Physics for AP Courses 2015-08-12T00:00:00Z For the trans isomer, each ligand is directly across from an identical ligand, so the bond dipoles cancel out, and the molecule is nonpolar. Chemistry 2019-02-14T00:00:00Z Together, the rotating polarization across the domain wall and the ring of polarization within it produces the pattern of electric dipoles observed by Das et al. Electrifying skyrmion bubbles 2019-04-16T04:00:00Z The moon doesn't have an overall dipole magnetic field like Earth's, but coarse satellite measurements together with rock samples brought back by the Apollo missions have shown a patchy field is embedded in its crust. Israeli lander pioneers private flights to the moon 2019-03-28T04:00:00Z The scientists zapped the molecules with lasers and studied the light reflected back by the molecules; bends in the light would point to an electric dipole moment. Measurement Shows the Electron's Stubborn Roundness 2018-10-18T04:00:00Z Magnetic dipole moment is a fundamental source of magnetic behavior of matter and an intrinsic property of some fundamental particles such as the electron. College Physics for AP Courses 2015-08-12T00:00:00Z The molecular dipole points away from the hydrogen atoms. Chemistry 2019-02-14T00:00:00Z To complete the picture, Das et al. used a technique known as four-dimensional scanning transmission electron microscopy to probe the swirling in-plane dipoles around the equator of a bubble that determine the bubble’s chirality. Electrifying skyrmion bubbles 2019-04-16T04:00:00Z Such a configuration is known as a dipole. Jupiter’s magnetic field revealed by the Juno spacecraft 2018-09-04T04:00:00Z The ability to use an electric or magnetic field to manipulate the orientation of electric dipoles or magnetic moments associated with atoms, ions or molecules in a material provides a vast array of functions. Electric and magnetic domains inverted by a magnetic field 2018-08-21T04:00:00Z Which of the following best represents the orientations of the dipoles when the field is present? College Physics for AP Courses 2015-08-12T00:00:00Z Hexane is a nonpolar liquid with a dipole moment of zero and, therefore, does not significantly interact with the ions of the NaCl crystals. Chemistry 2019-02-14T00:00:00Z The observed polarization structure is in remarkable agreement with atomic-scale simulations that reveal further details of the 3D dipole pattern. Electrifying skyrmion bubbles 2019-04-16T04:00:00Z For some reason, the contractor who built the coils for dipole C57a delivered a mirror image of the winding pattern that was specified. Breakthrough 2018-08-21T04:00:00Z In ferroelectric materials, however, clusters of ions assemble in a way that results in electric dipoles and a macroscopic polarization, even in the absence of an electric field. Electric and magnetic domains inverted by a magnetic field 2018-08-21T04:00:00Z The oscillating dipoles re-radiate light waves in both the forward and backward directions with respect to the direction of the incident wave. Mirrors made of a single atomic layer 2018-04-08T04:00:00Z For HF, there is a larger dipole moment because there is a larger difference in electronegativity. Chemistry 2019-02-14T00:00:00Z The magnetic dipole is characterised¹ by the number “g”. First beam for an important new physics experiment 2017-06-04T04:00:00Z Also, in marked contrast to Förster theory, dark exciton states are often similarly good excitation donors or acceptors because of how the dipole approximation fails to account for the structure of molecular aggregates64. Using coherence to enhance function in chemical and biophysical systems : Nature : Nature Research 2017-03-28T04:00:00Z Certain materials are composed of regions of aligned electric dipoles or magnetic moments, known as domains. Electric and magnetic domains inverted by a magnetic field 2018-08-21T04:00:00Z This holds true even when the material comprises a single layer of atoms, provided that the oscillating dipoles are being driven at their resonance frequency. Mirrors made of a single atomic layer 2018-04-08T04:00:00Z You may need to rotate the molecules in three dimensions to see certain dipoles. Chemistry 2019-02-14T00:00:00Z Viewed from this perspective, aromatic rings primarily serve as platforms upon which to place substituents in a spatial arrangement that will either be attractive or repulsive depending on the relative geometries between the interacting dipoles. Exploiting non-covalent π interactions for catalyst design : Nature : Nature Research 2017-03-28T04:00:00Z The delocalization of excitation within donor and/or acceptor manifolds enables remarkable acceleration of the energy transfer rate because the collective transition dipoles are much larger than molecular transition dipoles. Using coherence to enhance function in chemical and biophysical systems : Nature : Nature Research 2017-03-28T04:00:00Z The arrows indicate the direction of the dipoles or moments in each domain. Electric and magnetic domains inverted by a magnetic field 2018-08-21T04:00:00Z This particular pack of bologna, used here with a test dipole to check equipment, is even expired. In order to design antennas, first you must have bologna 2016-08-10T04:00:00Z Check the molecular dipole box to test your hypothesis. Chemistry 2019-02-14T00:00:00Z A charged cluster is also likely to experience higher collision rates with HOMs because they are expected to have high electric polarizability and, depending on their structure, large dipole moments. Ion-induced nucleation of pure biogenic particles : Nature : Nature Publishing Group 2016-05-24T04:00:00Z The fires were preceded and aggravated by the coincidence of two natural climate events – the Indian Ocean dipole and the Pacific El Niño. World heritage forests burn as global tragedy unfolds in Tasmania 2016-01-26T05:00:00Z The freak back-to-back storms are caused by the "Indian Ocean dipole," a weather phenomenon similar to a regional El Nino, caused when surface sea temperatures are higher than normal. Second rare cyclone batters Yemen, kills one: official 2015-11-08T05:00:00Z The freak back-to-back storms are caused by the "Indian Ocean dipole", a weather phenomenon similar to a regional El Nino, caused when surface sea temperatures are higher than normal. Second freak storm heads for Yemen, WMO says 2015-11-06T05:00:00Z Use these dipoles to predict whether N or H is more electronegative. Chemistry 2019-02-14T00:00:00Z The array is comprised of over 2,000 dipole antennae connected with transmission lines. Pop Culture Pulsar: The Science Behind Joy Division's Unknown Pleasures Album Cover 2015-10-13T04:00:00Z They also found the molecules showed strong dipole moments, which are the distributions of electric charges in a molecule that govern how they attract or repel other molecules. Molecules Reach Coldest Temperature Ever 2015-06-15T04:00:00Z They do this by loading single atoms into “optical dipole traps” that hold the atoms at the focus of a laser beam. Making And Shaking New Materials With Ultracold Atoms 2015-06-11T04:00:00Z The tracking detectors upstream and downstream of the dipole magnet measure the momenta of charged particles. Observation of the rare Bs0 →µ+µ− decay from the combined analysis of CMS and LHCb data : Nature : Nature Publishing Group 2015-05-12T04:00:00Z The electrostatic attraction between an ion and a molecule with a dipole is called an ion-dipole attraction. Chemistry 2019-02-14T00:00:00Z The magnetic field of Mercury is dipolar, but the dipole is not located at the center of the planet like it is for Earth and most other planets. Mercury Mission Set to End with Dramatic Crash 2015-04-28T04:00:00Z The magnetic field of Mercury is dipolar, but the dipole is not located at the centre of the planet like it is for Earth and most other planets. Mercury mission set to end with dramatic crash 2015-04-26T04:00:00Z That short was apparently caused by a wayward bit of metal inside the "diode box" in one of the superconducting dipole magnets that steer particles as they hurtle around the LHC. Short circuit in Large Hadron Collider is fixed 2015-03-31T04:00:00Z Geophysicists do not yet fully understand the process of geomagnetic reversals, but they agree that our planet's field is like a dipole magnet. Earth’s Impending Magnetic Flip 2014-09-24T04:00:00Z This separation of charge gives rise to a bond dipole moment. Chemistry 2019-02-14T00:00:00Z When he included carbon dioxide from fossil fuel use, he got a scenario over the past few decades that mirrored what has happened, including this past weird winter and other worsening dipole conditions. Study links California drought to global warming 2014-04-24T18:34:00Z Schematic of the adiabatic energy levels as a function of external electric field, for interband dipole moment . Addendum: Optical-field-induced current in dielectrics 2014-03-19T18:22:43.387Z A strong electric field is required to detect a small electric dipole, and one proposed method is to observe the properties of the electron in the internal electric field of a polar molecule. [Perspective] Probing the Electron 2014-01-16T18:55:47.006Z The rotating-bias-field technique may enable using trapped polar molecules for precision measurement and quantum information science, including the search for an electron electric dipole moment. [Report] Precision Spectroscopy of Polarized Molecules in an Ion Trap 2013-12-05T18:57:10.822Z The dipole moment measures the extent of net charge separation in the molecule as a whole. Chemistry 2019-02-14T00:00:00Z The new study blames an unusual "dipole," a combination of a strong Western high pressure ridge and deep Great Lakes low pressure trough. Study links California drought to global warming 2014-04-24T18:34:00Z “If there’s new physics at the energy range where LHC is probing, you would have expected that it would also produce a dipole moment substantially bigger than the limit we now have,” Hinds says. Electron Appears Spherical, Squashing Hopes for New Physics Theories 2013-11-11T13:15:00.440Z The electrostatic enhancement of ion–molecule collisions is calculated using dipole moments and polarizabilities obtained from quantum chemistry. Molecular understanding of sulphuric acid–amine particle nucleation in the atmosphere 2013-10-16T17:22:18.533Z One of the signatures of this “new physics” would be a nonvanishing electric dipole moment of the electron, but experiments designed to look for it need to distinguish between the signal and many potential artifacts. [Report] Precision Spectroscopy of Polarized Molecules in an Ion Trap 2013-12-05T18:57:10.822Z We determine the dipole moment by adding the bond moments in three-dimensional space, taking into account the molecular structure. Chemistry 2019-02-14T00:00:00Z That dipole is linked to a recently found precursor to El Nino, the world-weather changing phenomenon. Study links California drought to global warming 2014-04-24T18:34:00Z A familiar example of a dipole is a bar magnet, which is shaped like a dumbbell with a north and a south pole. Electron Appears Spherical, Squashing Hopes for New Physics Theories 2013-11-11T13:15:00.440Z The array’s low frequencies and large number of more than 2000 small dipole antennas — distributed over a diameter of some 3 kilometers, allow it to see a huge fraction of the sky at once. Searching For Deep Cosmos' Mysterious 'Fast Radio Bursts' 2013-09-26T01:55:00Z So far he’s got posts on light scattering forces and slow atomic beams; optical molasses; and light shifts and optical dipole traps. Physics Week in Review: August 3, 2013 2013-08-03T20:45:03.310Z The presence of this dipole can, in turn, distort the electrons of a neighboring atom or molecule, producing an induced dipole. Chemistry 2019-02-14T00:00:00Z He said that when he once asked a colleague a sophisticated physics question, the colleague replied, “Only Jim Gordon really understands the dipole force.” James Gordon Dies at 85; Work Paved Way for Laser 2013-07-28T01:51:30Z Electrons are traditionally thought of as spherical, but if they had dipole moments, they would be slightly squashed. Electron Appears Spherical, Squashing Hopes for New Physics Theories 2013-11-11T13:15:00.440Z If that is so, pear-shaped nuclei should have the strongest electric dipoles, and measuring these could help researchers to choose between the various models. Pear-Shaped Nucleus Boosts Search for Alternatives to 'Standard Model' Physics 2013-05-10T15:15:05.820Z The strong electric field at the tip polarizes the pieces, pulling their electrons onto one side and leaving a net positive charge on the other, essentially making small electric dipoles. Cavity Quantum Electrodynamics 2012-10-09T20:45:02.517Z These two rapidly fluctuating, temporary dipoles thus result in a relatively weak electrostatic attraction between the species—a so-called dispersion force like that illustrated in Figure 10.6. Chemistry 2019-02-14T00:00:00Z These improvements have been attributed to the formation of dipole layers and to Fermi-level pinning, respectively. Materials interface engineering for solution-processed photovoltaics 2012-08-15T17:22:03.163Z Physicists have been searching for this dipole moment for 50 years. Electron Appears Spherical, Squashing Hopes for New Physics Theories 2013-11-11T13:15:00.440Z They also predict that some nuclei should generate a weak electric dipole field, similar to the magnetic field of a bar magnet. Pear-Shaped Nucleus Boosts Search for Alternatives to 'Standard Model' Physics 2013-05-10T15:15:05.820Z The Yale researchers demonstrated these polarization-dependent effects by rotating the atomic dipole between the mirrors with the help of a magnetic field. Cavity Quantum Electrodynamics 2012-10-09T20:45:02.517Z For a molecule, the overall dipole moment is determined by both the individual bond moments and how these dipoles are arranged in the molecular structure. Chemistry 2019-02-14T00:00:00Z Meanwhile, Australia will build the remaining dipole antennas. Winners all round in telescope bid 2012-05-30T17:50:24.417Z The same goes for an electron with an electric dipole moment. Electron Appears Spherical, Squashing Hopes for New Physics Theories 2013-11-11T13:15:00.440Z The latest result confirms that radium isotopes should be a good place to look for electric dipoles, and that some isotopes of thorium and uranium might be even better. Pear-Shaped Nucleus Boosts Search for Alternatives to 'Standard Model' Physics 2013-05-10T15:15:05.820Z As a result, emission is inhibited only if the atomic dipole antenna oscillates along the plane of mirrors. Cavity Quantum Electrodynamics 2012-10-09T20:45:02.517Z Which of these molecules and ions have dipole moments? Chemistry 2019-02-14T00:00:00Z Unlike the LHC experiments, which rely on sheer energy, dipole measurements are so subtle and easily foiled that the three leading efforts are woefully behind schedule. Efforts to Measure Neutron's Charge Are Plagued by Difficulties 2012-02-01T15:45:10.403Z But if they exist, all these twin particles should arise as virtual phantoms in the cloud around electrons, giving it a measurable electric dipole moment. Electron Appears Spherical, Squashing Hopes for New Physics Theories 2013-11-11T13:15:00.440Z To measure the Indian Ocean dipole, 2-meter-long lithium battery-powered buoys, which look like bright yellow rockets, record temperature, pressure, and salinity. Australia Resorts to Gunboat Climatology 2011-07-20T16:36:26Z When the dipole orientation was tilted with respect to the mirrors' plane, the excited-state lifetime dropped substantially. Cavity Quantum Electrodynamics 2012-10-09T20:45:02.517Z For diatomic molecules, there is only one bond, so its bond dipole moment determines the molecular polarity. Chemistry 2019-02-14T00:00:00Z Physicists argue that we would expect to see this electric dipole in a Universe which consists overwhelmingly of matter. Electron Perfectly Round to One Part in a Million Billion, Experiment Finds 2011-05-25T22:15:01.953Z “You can endlessly make models of supersymmetry,” says Eugene Commins, an emeritus professor of physics at the University of California, Berkeley, who led the last search for the dipole moment in atoms. Electron Appears Spherical, Squashing Hopes for New Physics Theories 2013-11-11T13:15:00.440Z If one surrounds the sensor by a "cloak" that induces "opposing" dipoles, the cloak will produce a scattered field that cancels the scattered field of the sensor. Invisibility: After several years of research, it's just gotten weirder 2011-01-11T18:45:11.203Z The frequency of this oscillation depends on the transition energy, on the size of the atomic dipole and on the size of the cavity. Cavity Quantum Electrodynamics 2012-10-09T20:45:02.517Z For heteronuclear molecules such as CO, there is a small dipole moment. Chemistry 2019-02-14T00:00:00Z Although the direction of the electric dipole would remain unchanged, the magnetic dipole around the electron--which depends on the direction of its spin--would flip to the opposite direction. Electron Perfectly Round to One Part in a Million Billion, Experiment Finds 2011-05-25T22:15:01.953Z “The dipole moment is physicists’ technical way to describe if it’s symmetric or not.” Electron Appears Spherical, Squashing Hopes for New Physics Theories 2013-11-11T13:15:00.440Z Each antenna consists of two curtains with a total of 8 horizontal dipoles. The Dawn of Amateur Radio in the U.K. and Greece: a personal view The atomic dipole and the vacuum field are oscillating quantities, however, and their respective oscillations must maintain a constant relative phase if a net force is to continue for any length of time. Cavity Quantum Electrodynamics 2012-10-09T20:45:02.517Z For these molecules, the directions of the equal bond moments are such that they sum to give a nonzero dipole moment and a polar molecule. Chemistry 2019-02-14T00:00:00Z For one bond, the bond dipole moment is determined by the difference in electronegativity between the two atoms. Chemistry 2019-02-14T00:00:00Z But if more exotic particles are out there, they should pop up in the virtual clouds around electrons, causing the clouds to be asymmetric—in other words, causing an electric dipole moment. Electron Appears Spherical, Squashing Hopes for New Physics Theories 2013-11-11T13:15:00.440Z The dipoles are all fed by open wire feeders which can be remotely switched to enable radiation in two directions 180 degrees apart. The Dawn of Amateur Radio in the U.K. and Greece: a personal view Which of these molecules and ions have dipole moments? Chemistry 2019-02-14T00:00:00Z Have a molecular structure such that the sum of the vectors of each bond dipole moment does not cancel. Chemistry 2019-02-14T00:00:00Z Draw them and discuss how measurements of dipole moments could help distinguish among them. Chemistry 2019-02-14T00:00:00Z “It’s hard because there are a lot of things that can mimic the effect, and the dipole moment is just so small,” says Ben Sauer, another member of the Imperial College London team. Electron Appears Spherical, Squashing Hopes for New Physics Theories 2013-11-11T13:15:00.440Z Write the Lewis structure for acetonitrile, and indicate the direction of the dipole moment in the molecule. Chemistry 2019-02-14T00:00:00Z The Standard Model of particle physics, which describes all the known particles in the universe, predicts a practically zero electric dipole moment for the electron. Electron Appears Spherical, Squashing Hopes for New Physics Theories 2013-11-11T13:15:00.440Z A dipole moment measures a separation of charge. Chemistry 2019-02-14T00:00:00Z Yet theories that include additional, yet-to-be-detected particles predict a much larger dipole moment. Electron Appears Spherical, Squashing Hopes for New Physics Theories 2013-11-11T13:15:00.440Z The result came from a search for the so-called electric dipole moment in the electron. Electron Appears Spherical, Squashing Hopes for New Physics Theories 2013-11-11T13:15:00.440Z |
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