| 单词 | field strength |
| 例句 | The sunspots, sometimes visible to the naked eye at sunset, are cooler regions of enhanced magnetic field strength. Cosmos 1980-01-01T00:00:00Z But without the proper magnetic field strength, it exploded outward instead. Darius the Great Is Not Okay 2018-08-28T00:00:00Z Ruby and emerald are kin, Their chromium impurity the same, The crystal field strength weaker in The shoot than in the flame. The Saturday poem: Ruby 2010-05-07T23:14:00Z The researchers repeated the experiment more than a dozen times, varying the magnetic field strength at the top and bottom of the trap to rule out possible errors. Down goes antimatter! Gravity's effect on matter's elusive twin is revealed 2023-09-27T04:00:00Z Reduce the field strength by a factor of 25 and the polarization falls with it. MRI for all: Cheap portable scanners aim to revolutionize medical imaging 2023-02-22T05:00:00Z Note that in the above equation, E and F symbolize the magnitudes of the electric field strength and force, respectively. College Physics for AP Courses 2015-08-12T00:00:00Z The ranking began in 2006 with only the top 200 players accounting for the field strength, and that was expanded to the top 400 players in 2009. Geoff Ogilvy ‘scratching the itch’ to play PGA Tour again 2022-07-26T04:00:00Z After analyzing the field strength frozen in the tiny magnetic needles, they found that its intensity had already jumped to 70% of present values, they reported at the AGU meeting. Scientists are probing the secrets of Earth’s inner core—and how it saved life on our planet 2022-03-30T04:00:00Z In a study published today in Nature, researchers report a magnetic field strength of 4 microgauss—no stronger than in the outer layer. Stars may form 10 times faster than thought 2022-01-05T05:00:00Z Tokamak Energy is hoping for a similar field strength in its test of a full set of 16 coils, sized for a test reactor about a meter across. Fusion startup plans reactor with small but powerful superconducting magnets 2021-03-03T05:00:00Z The electric field strength is, thus, directly proportional to Q . College Physics for AP Courses 2015-08-12T00:00:00Z Using the Official World Golf Ranking as a barometer for field strength is a slippery slope, especially since stats guru Mark Broadie has pointed out its bias towards the PGA Tour. Paul Azinger words on European golf were harsh. They also weren't wrong - Golf Digest 2020-03-02T05:00:00Z The reason is thought to be the associated variation in the Sun's magnetic field strength and behavior, which alters the 'shielding' of our solar system from electrically charged cosmic rays. The Gamma-Ray Moon 2019-08-31T04:00:00Z Using the Zeeman effect tracer detected by FAST, astronomers might even be able to measure the magnetic field strength in the accretion disks of gas and dust around newly born stars. Stars may form 10 times faster than thought 2022-01-05T05:00:00Z A popular one is the magnetic field strength at the sun's poles at solar minimum. Scientists tackle a burning question: When will our quiet sun turn violent? 2019-05-30T04:00:00Z Since the electric field strength is proportional to the density of field lines, it is also proportional to the amount of charge on the capacitor. College Physics for AP Courses 2015-08-12T00:00:00Z Electrical field strength near an array of thin filaments called emitters at the front of the wing ionizes air, meaning electrons are removed and charged molecules called ions are created. Radical experimental plane with no moving parts wows scientists 2018-11-21T05:00:00Z Stronger electric fields accelerate particles over shorter distances, so doubling the field strength means reaching the same energies with an accelerator half as long. CERN’s pioneering mini-accelerator passes first test 2018-08-28T04:00:00Z Another way to solve the heat problem is to increase a device’s magnetic field strength overall by using superconducting magnets, an approach being followed by researchers at the Massachusetts Institute of Technology in Cambridge. Knighthood in hand, astrophysicist prepares to lead U.S. fusion lab 2018-06-19T04:00:00Z Telescopes can measure this field strength by gauging how atoms above the sun's surface absorb certain wavelengths of light. Scientists tackle a burning question: When will our quiet sun turn violent? 2019-05-30T04:00:00Z In fact, this is how we define the magnetic field strength B —in terms of the force on a charged particle moving in a magnetic field. College Physics for AP Courses 2015-08-12T00:00:00Z MR angiography,Pet scanning, high field strength for Orthopedic diagnosis. Why Was This Teenager Bleeding So Excessively? 2018-03-13T04:00:00Z Yet generally speaking, closed MRIs are four or five times as powerful as open MRIs, when measured by their magnetic field strength. Claustrophobia can turn MRI into frightening experience 2018-03-09T05:00:00Z We infer a surface magnetic field strength for the white dwarf in MV Lyrae of between 2 × 104 gauss and 1 × 105 gauss, too low to be detectable by other current methods. Magnetically gated accretion in an accreting ‘non-magnetic’ white dwarf 2017-12-12T05:00:00Z Remarkably, the field strength in India, Egypt and Cyprus around the same time was completely normal, indicating that the spike was perhaps only 2,000km wide. Mysterious "Geomagnetic Spike" 3,000 Years Ago Challenges Our Understanding of the Earth's Interior 2017-11-08T05:00:00Z The Hall effect has other uses that range from the determination of blood flow rate to precision measurement of magnetic field strength. College Physics for AP Courses 2015-08-12T00:00:00Z MR angiography,Pet scanning, high field strength for... Why Was This Teenager Bleeding So Excessively? 2018-03-13T04:00:00Z The frequency difference between the two onsets represents the ground-state hyperfine splitting and is independent of the field strength and the number of anti-atoms that are trapped. Observation of the hyperfine spectrum of antihydrogen : Nature : Nature Research 2017-08-01T04:00:00Z The field strength of the magnet is 1.45 Tesla, about a thousand times stronger than a fridge magnet. First beam for an important new physics experiment 2017-06-04T04:00:00Z But this shielding effect is far from constant, as the field strength varies significantly in both space and time. Mysterious "Geomagnetic Spike" 3,000 Years Ago Challenges Our Understanding of the Earth's Interior 2017-11-08T05:00:00Z One of the most common uses of the Hall effect is in the measurement of magnetic field strength B . College Physics for AP Courses 2015-08-12T00:00:00Z The magnetic field strength is so weak there that it’s a hazard for satellites that orbit above the region – the field no longer protects them from radiation which interferes with satellite electronics. A pole reversal: Scientists discuss an anomaly in the Earth’s magnetic field 2017-02-08T05:00:00Z The scientists say the jet is the best explanation for the patches of concentrated field strength that the satellites observe in the northern hemisphere. Iron 'jet stream' detected in Earth's outer core - BBC News 2016-12-19T05:00:00Z But longitude requires detecting subtle variations in field strength from place to place—an extra map or signpost sense that magnetite could supply, Lohmann says. The body’s hidden compass—what is it, and how does it work? 2016-06-23T04:00:00Z A fluxgate magnetometer to check field strength dangles above a wooden chair that has had all of its iron-containing parts replaced with nonmagnetic brass screws and aluminum brackets. Maverick scientist thinks he has discovered a magnetic sixth sense in humans 2016-06-23T04:00:00Z There is a simple formula for the magnetic field strength at the center of a circular loop. College Physics for AP Courses 2015-08-12T00:00:00Z Magnetite preserves a record of magnetic field strength at the time the mineral was trapped in the zircon. Earth's 'magnetic personality' much older than previously thought 2015-07-30T04:00:00Z That magnetic field strength — 17.6 Tesla — is around 100 times stronger than the magnetic field created by your average refrigerator magnet, Science Daily explains. New superconductor sets world record, packing three tons of force into the size of a golf ball 2014-06-30T04:00:00Z It comprises three satellites that are equipped with a variety of instruments - the key ones being state-of-the-art magnetometers that measure field strength and direction. Swarm mission makes magnetic maps 2014-06-20T04:00:00Z When you apply an external magnetic field the nuclei start to precess, or change the orientation of their rotational axis, with a frequency that is proportional to the field strength. Q&A: A man of many dimensions 2013-10-16T17:21:35.633Z The similarity of the equations does indicate that similar field strength can be obtained at the center of a loop. College Physics for AP Courses 2015-08-12T00:00:00Z And although the magnetometer on Voyager 1 did register an increase in magnetic field strength as the spacecraft crossed over into the new realm, the direction of the magnetic field did not change. Voyager 1 Returns Surprising Data about an Unexplored Region of Deep Space 2013-06-27T19:15:08.627Z And because the field strength declines non-linearly with distance, coupled with the Biot-Savart Law, you'd probably need a coil at least the size of a respectable building to get any decent range from one. Brain-controlling magnets: how do they work? 2013-05-17T06:00:00Z In the latter, field strength is seen to drop over the western hemisphere but rise in other areas, such as the southern Indian Ocean. Swarm mission makes magnetic maps 2014-06-20T04:00:00Z Andrew’s study found that magnetic field strength did appear to inhibit growth of his test colonies of Escherichia coli. Meet the Science in Action Finalists 2012-05-21T17:45:00.227Z What is the magnetic field strength created at its center? College Physics for AP Courses 2015-08-12T00:00:00Z The field strength was nearly double what it had been in recent years. Torrey Pines loses some luster 2012-01-24T21:27:12Z In this way the field strength is easily regulated. Hawkins Electrical Guide, Number One Questions, Answers, & Illustrations, A Progressive Course of Study for Engineers, Electricians, Students and Those Desiring to acquire a Working Knowledge of Electricity and its Applications 2011-12-24T03:07:54.823Z In well-designed simulations, physical quantities, such as force or field strength, are not given. [Essay] Spore* Series winner: Open Source Physics 2011-11-24T19:25:43.493Z In the course of the campaign the field strength of the French had been gradually augmented, and in spite of losses now numbered 227,000 at the front. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 2 "French Literature" to "Frost, William" 2011-10-14T02:00:26.280Z Construct a problem in which you calculate the magnetic field strength needed to separate two ions that differ in mass, but not charge, and have the same initial velocity. College Physics for AP Courses 2015-08-12T00:00:00Z Below a certain field strength, a spot will fade away. End of the Sunspot Cycle? 2011-06-14T23:06:32Z A rheostat is placed in series with the field coils, and by varying the resistance, more or less current will flow through the coils, thus regulating the field strength. Hawkins Electrical Guide, Number One Questions, Answers, & Illustrations, A Progressive Course of Study for Engineers, Electricians, Students and Those Desiring to acquire a Working Knowledge of Electricity and its Applications 2011-12-24T03:07:54.823Z Thus if F is the field strength, K the dielectric constant, and U the mechanical force acting on a unit charge, F = KU. The New Gresham Encyclopedia Volume 4, Part 2: Ebert to Estremadura 2011-04-14T02:00:56.200Z When war came, it was soon found that the regulars had fallen too low in numbers and that the national guard demanded too high 172 pay, to admit of developing the expected field strength. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 2 "French Literature" to "Frost, William" 2011-10-14T02:00:26.280Z Not only does the iron core trap the magnetic field created by the primary coil, its magnetization increases the field strength. College Physics for AP Courses 2015-08-12T00:00:00Z Penn finds that the typical field strength of spots began declining in the past cycle and continues to decline in this cycle. End of the Sunspot Cycle? 2011-06-14T23:06:32Z The third method, that of variation of field strength, is the one in general use. Hawkins Electrical Guide, Number One Questions, Answers, & Illustrations, A Progressive Course of Study for Engineers, Electricians, Students and Those Desiring to acquire a Working Knowledge of Electricity and its Applications 2011-12-24T03:07:54.823Z Germany was now at the very top of her field strength. The Childrens' Story of the War, Volume 3 (of 10) 2011-02-26T03:00:45.583Z But Ting says the addition of spare detectors and the extra years in orbit more than compensate for the diminished field strength. New 'heart' for particle detector 2010-04-27T10:27:00Z The maximum magnetic field strength of an electromagnetic field is 5×10−6 T . College Physics for AP Courses 2015-08-12T00:00:00Z The effect of these modifications was to increase the field strength at the center of the pole gap from 15,000 to 23,400 gauss. LRL Accelerators The 184-Inch Synchrocyclotron Thrust could apparently be initiated by a field strength a few per cent lower, but not much lower, than the original operating point. Where I Wasn't Going Considering their speed—the field strength at operating rate was almost imperceptible—they had to be built new, which would mean round-the-clock work at Kenmore. Space Platform Star motion against engine thrust and field strength. The Measure of a Man The maximum electric field strength above which an insulating material begins to break down and conduct is called dielectric strength. College Physics for AP Courses 2015-08-12T00:00:00Z The field strength decreases gradually out to a radius of about 83-in., after which it falls off sharply. LRL Accelerators The 184-Inch Synchrocyclotron Carefully, Ishie lowered the field strength, eye on the readout panel. Where I Wasn't Going We haven't drawn a frank from a plant in a month, and we've had to cut our field strength down to a whisper to keep from burning out our accumulators. Spacehounds of IPC The field strength of the electromagnets, controlled by rheostats, instantly shaped the charge into a glowing ball of fire! Tom Swift and The Visitor from Planet X What is the voltage across an 8.00 nm–thick membrane if the electric field strength across it is 5.50 MV/m? College Physics for AP Courses 2015-08-12T00:00:00Z In electromagnetic waves, the amplitude is the maximum field strength of the electric and magnetic fields. College Physics for AP Courses 2015-08-12T00:00:00Z As the field strength lowered, the reading increased. Where I Wasn't Going A synchrotron is a version of a cyclotron in which the frequency of the alternating voltage and the magnetic field strength are increased as the beam particles are accelerated. College Physics for AP Courses 2015-08-12T00:00:00Z The slightest variation in field strength triggered an instant response from the ball of energy. Tom Swift and The Visitor from Planet X What is the electric field strength between the plates? College Physics for AP Courses 2015-08-12T00:00:00Z Drawings using lines to represent electric fields around charged objects are very useful in visualizing field strength and direction. College Physics for AP Courses 2015-08-12T00:00:00Z Running the field strength down and the pressure up, and again arriving at sixteen hundred pounds, he turned off the Confusor, waited a few moments, and turned it back on. Where I Wasn't Going Examining this will tell us what voltage is needed to produce a certain electric field strength; it will also reveal a more fundamental relationship between electric potential and electric field. College Physics for AP Courses 2015-08-12T00:00:00Z Humid air breaks down at a lower field strength, meaning that a smaller voltage will make a spark jump through humid air. College Physics for AP Courses 2015-08-12T00:00:00Z Note that B is the field strength anywhere in the uniform region of the interior and not just at the center. College Physics for AP Courses 2015-08-12T00:00:00Z So the electric field strength is less than if there were a vacuum between the plates, even though the same charge is on the plates. College Physics for AP Courses 2015-08-12T00:00:00Z Carefully he nudged the field strength back up, and suddenly there were seven hundred ten pounds indicated thrust. Where I Wasn't Going How does this relate to the electric field strength? College Physics for AP Courses 2015-08-12T00:00:00Z If the magnetic field strength is 0.6 T and peak voltage is 0.2 V, what is the radius of the coil? College Physics for AP Courses 2015-08-12T00:00:00Z The specific frequency of the radio waves that are absorbed and reemitted depends sensitively on the type of nucleus, the chemical environment, and the external magnetic field strength. College Physics for AP Courses 2015-08-12T00:00:00Z Find the intensity of an electromagnetic wave having a peak magnetic field strength of 4.00×10−9 T . College Physics for AP Courses 2015-08-12T00:00:00Z The indication was that by lowering the field strength only ten per cent, he had increased the thrust to sixteen hundred pounds—which, he felt, was close to the tolerance of the machine structure. Where I Wasn't Going Construct a problem in which you calculate the intensity of this electromagnetic radiation in W/m2 based on the measured magnetic field strength of the radiation in a home near the power lines. College Physics for AP Courses 2015-08-12T00:00:00Z Construct a problem in which you calculate the power received by the dish and the maximum electric field strength of the microwave signals for a single channel received by the dish. College Physics for AP Courses 2015-08-12T00:00:00Z The force on the rectangular loop of wire in the magnetic field in Figure 22.62 can be used to measure field strength. College Physics for AP Courses 2015-08-12T00:00:00Z But one general feature is that the amount the split lines are separated is proportional to the applied field strength, indicating an interaction with a moving charge. College Physics for AP Courses 2015-08-12T00:00:00Z Apparently, then a decrease in field strength would cause an increase in thrust; but the original field strength was necessary in order to initiate the thrust field. Where I Wasn't Going Magnetic field strength is increased to keep the orbital radius constant as energy increases. College Physics for AP Courses 2015-08-12T00:00:00Z If field strength increases in the direction of motion, the field will exert a force to slow the charges, forming a kind of magnetic mirror, as shown below. College Physics for AP Courses 2015-08-12T00:00:00Z The wavelength of 100-MHz radio waves is 3 m, yet using the sensitivity of the resonant frequency to the magnetic field strength, details smaller than a millimeter can be imaged. College Physics for AP Courses 2015-08-12T00:00:00Z The cross-sectional area of the coils is the same on either side, as is the magnetic field strength, and so ΔΦ / Δt is the same on either side. College Physics for AP Courses 2015-08-12T00:00:00Z |
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