| 单词 | bar magnet |
| 例句 | 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 Because Earth’s magnetic field is dipolar like a bar magnet and aligned roughly perpendicular to our world’s rotation, geomagnetic field lines extend most prominently from the vicinity of our planet’s North and South poles. How to Watch the Northern Lights and Other Awesome Auroras 2023-10-13T04:00:00Z Imagine a simple bar magnet, which generates a magnetic field similar in shape to the one that surrounds Earth. How Solar Wind Flows From the Sun Like Water From a Shower Head 2023-06-07T04:00:00Z Like two bar magnets, the fields connected in such a way that “just opened things up.” Auroras shine unusually far south amid strongest solar storm since 2017 2023-03-24T04:00:00Z The regions within the material called domains act like small bar magnets. College Physics for AP Courses 2015-08-12T00:00:00Z Our planet behaves in some ways as if a giant bar magnet were inside it, aligned approximately with the rotational poles of Earth. Astronomy 2016-10-13T00:00:00Z Figure 9.13 Depiction of Earth’s magnetic field as a bar magnet coinciding with the core. Physical Geology 2015-01-01T00:00:00Z During the sun’s quiet periods — solar activity varies on an 11-year cycle, from comparatively calm to hyperactive — the sun’s magnetic field possesses this bar magnet configuration. How Solar Wind Flows From the Sun Like Water From a Shower Head 2023-06-07T04:00:00Z Stern and Gerlach expected the silver atoms in their beam to act like tiny bar magnets and therefore to react to a magnetic field. It Has Been 100 Years Since a Quantum Experiment Showed Why We Don’ Fall Through Our Chairs 2022-02-08T05:00:00Z Each atom acts like a tiny bar magnet. College Physics for AP Courses 2015-08-12T00:00:00Z A heavier, unstable cousin of the electron, the muon acts like a tiny bar magnet, and its magnetism provides a means to dowse for hints of new particles. Fresh calculation of obscure particle's magnetism could dim hopes for new physics 2021-04-14T04:00:00Z The canonical view of neutron stars has their magnetic field lines looking like those surrounding a bar magnet, with north and south sides emerging from circular spots at opposing ends of the star. The golden age of neutron-star physics has arrived 2020-03-03T05:00:00Z At first the field is primarily poloidal—with field lines running from pole to pole like a bar magnet's. Scientists tackle a burning question: When will our quiet sun turn violent? 2019-05-30T04:00:00Z Earth generates a magnetic field that looks as if a bar magnet runs from the South Pole through its core to the North Pole. Why Do the Northern and Southern Lights Differ? 2019-02-13T05:00:00Z Individual atoms are aligned within domains; each atom acts like a tiny bar magnet. College Physics for AP Courses 2015-08-12T00:00:00Z Each muon is also magnetized like a miniature bar magnet. Renewed measurements of muon's magnetism could open door to new physics 2018-01-25T05:00:00Z NMR exploits the fact that nuclei of certain atoms, including hydrogen, act like tiny bar magnets and line up in a magnetic field. Peter Mansfield (1933-2017) : Nature : Nature Research 2017-03-07T05:00:00Z Earth's magnetic field, generated by its liquid outer core, is similar to that of a giant off-axis bar magnet. Maverick scientist thinks he has discovered a magnetic sixth sense in humans 2016-06-23T04:00:00Z Instead it uses permanent room-temperature magnets, similar to the familiar bar magnet, only more powerful. Hyperloop Transportation says it will use a ‘cheaper, safer’ form of magnetic levitation 2016-05-09T04:00:00Z The field is similar to that of a bar magnet. College Physics for AP Courses 2015-08-12T00:00:00Z Heisenberg imagined each atom as a freely rotating bar magnet, and found that large-scale magnetism emerges when interactions between these atomic magnets cause the majority of them to align. The physics of life 2016-01-04T05:00:00Z In some materials, atoms act like tiny bar magnets and line up to produce a magnetic field. Leo P. Kadanoff, Physicist of Phase Transitions, Dies at 78 2015-11-01T04:00:00Z When they wore a bar magnet in the elastic of their blindfolds, that pointing skill was thwarted, whereas controls who wore a brass bar still had what appeared to be a magnetic sense. Maverick scientist thinks he has discovered a magnetic sixth sense in humans 2016-06-23T04:00:00Z Iron filings showing the magnetic field of two bar magnets. Five Pictures We Draw When We Talk About Physics 2015-05-12T04:00:00Z The current induced in the coil creates another field, in the opposite direction of the bar magnet’s to oppose the increase. College Physics for AP Courses 2015-08-12T00:00:00Z That is similar to what happens when two bar magnets attract each other — the north pole of one is pulled toward the south pole of the other. NASA Mission to Measure Earth’s Magnetic Collisions 2015-03-12T04:00:00Z The researchers believe the field is like a bar magnet, so as our star spins around sometimes the field points towards the Earth and sometimes away. Sun boosts UK lightning strikes 2014-11-18T05:00:00Z A professor held the tongue plate of a chiton, a type of mollusk, and dragged it around with a bar magnet. Maverick scientist thinks he has discovered a magnetic sixth sense in humans 2016-06-23T04:00:00Z This means that their spin — a quantum property analogous to the magnetization of a bar magnet — is always opposite in direction to the electron's motion. Force of nature gave life its asymmetry 2014-09-24T04:00:00Z An emf is induced in the coil when a bar magnet is pushed in and out of it. College Physics for AP Courses 2015-08-12T00:00:00Z They suspended a proton in a trap and applied a magnetic field that caused the tiny bar magnet to flip. Proton's magnetism measured with greatest precision yet 2014-05-28T04:00:00Z 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 Let’s stand our key-laden rod on its end, line up a bar magnet with it, and wave the magnet in a circle around the rod. Quantum Computing Disentangled: A Look behind the D-Wave Buzz 2013-08-27T17:15:13.517Z They began with a sample in which all the atomic bar magnets were aligned. Twisted Magnetic Fields Tie Information in a Knot 2013-08-08T22:15:04.270Z This is also true for the bar magnet and coil shown in Figure 23.4. College Physics for AP Courses 2015-08-12T00:00:00Z A proton’s magnetic moment arises from a fundamental quantum property called spin, which causes the proton to behave as a tiny bar magnet with a north and a south pole. Proton's magnetism measured with greatest precision yet 2014-05-28T04:00:00Z 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 By the next year, they were inspecting the Union’s ironclads and installing an array of bar magnets around the compasses to correct their navigation. Dot Earth Blog: Obama Hails 150th Year of Academy of Sciences 2013-04-29T21:03:35Z The twisted vortices, known as skyrmions, are arrangements of atoms, with each atom acting like a bar magnet owing to a quantum property of its electrons called spin. Twisted Magnetic Fields Tie Information in a Knot 2013-08-08T22:15:04.270Z About a year later, on the advice of the scientists, bar magnets were installed on the ships to correct their navigation. The Caucus: Spending Cuts Threaten to Delay Research, Obama Tells Scientists 2013-04-29T20:17:58Z What is more, these microscopic bar magnets rotate their orientation while they are oscillating in space, and the amount of rotation depends on whether one or both of the ions are in the 1 state. Quantum Computing with Ions [Repost] 2012-10-09T18:15:00.540Z Spin is a quantum property akin to the pointing of a particle's internal bar magnet, either up or down, representing 1 or 0. A Bit of Progress: Diamonds Shatter Quantum Information Storage Record 2012-03-12T10:15:00.243Z Indicators of this class, owing to the fact that their replacement depends on the polarity of the bar magnet, are also known as "polarised indicators." Electric Bells and All About Them A Practical Book for Practical Men 2012-03-06T03:00:25.273Z After this, one end of a cylindrical bar magnet was introduced into a helix of copper wire, and then suddenly thrust completely in. Heroes of Science: Physicists 2012-01-17T03:00:17Z Will a bar magnet, used in Bell telephone, lose its power to such a degree as not to work? Scientific American, Vol. XXXIX.?No. 24. [New Series.], December 14, 1878 A Weekly Journal Of Practical Information, Art, Science, Mechanics, Chemistry, And Manufactures 2012-01-05T03:00:31.783Z The horse shoe magnet will attract more than the bar magnet because both poles act together. 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 You might be able to cause the movable bar magnet to make turn after turn. Electricity for the 4-H Scientist Idaho Agricultural Extension Service Bulletin 396, June, 1962 2011-11-18T03:00:30.487Z This form of indicator consists usually of a permanent bar magnet pivoted near its centre, so that it can hang vertically between the two poles of an electro-magnet placed at its lower extremity. Electric Bells and All About Them A Practical Book for Practical Men 2012-03-06T03:00:25.273Z Graham Bell placed a thin iron disc in front of the pole of a bar magnet, and wound a coil of fine wire round the bar very near the pole. Heroes of Science: Physicists 2012-01-17T03:00:17Z Would it reduce the strength of bar magnet to cut a thread on one end of it? Scientific American, Vol. XXXIX.?No. 24. [New Series.], December 14, 1878 A Weekly Journal Of Practical Information, Art, Science, Mechanics, Chemistry, And Manufactures 2012-01-05T03:00:31.783Z If a bar magnet be plunged into iron filings and then lifted, as illustrated in the figure, a mass of filings will cling to the ends of the magnet but not to the middle. 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 We can't reverse the poles on simple bar magnets, but we can on electromagnets. Electricity for the 4-H Scientist Idaho Agricultural Extension Service Bulletin 396, June, 1962 2011-11-18T03:00:30.487Z But microprocessors employing nanometer-sized bar magnets—like tiny refrigerator magnets—for memory, logic and switching operations theoretically would require no moving electrons. Magnetic Memory Could Achieve Ultimate Energy Efficiency 2011-07-05T18:11:00Z Through the bottom one is passed the north end of a bar magnet which projects up above a little mercury lying in the cork. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 2 "Ehud" to "Electroscope" 2011-01-29T03:00:23.777Z Let G be a galvanometer connected with the wires from a helix; N S, a permanent bar magnet. The Telephone An Account of the Phenomena of Electricity, Magnetism, and Sound, as Involved in Its Action A magnetic needle consists of a small bar magnet, supported upon a pivot or suspended so that it is free to turn in a horizontal or vertical plane. 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 Small bar magnets laid side by side move so that the North pole of one is near the South pole of the other. Electricity for the 4-H Scientist Idaho Agricultural Extension Service Bulletin 396, June, 1962 2011-11-18T03:00:30.487Z Miss M. holds a bar magnet by its two ends. Blackwood's Edinburgh Magazine, Volume 61, No. 377, March 1847 When a current is passed in at the top wire and out at the lower end of the bar magnet, the loose wire revolves round the magnet pole. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 2 "Ehud" to "Electroscope" 2011-01-29T03:00:23.777Z Suppose you wind a coil of insulated wire around a bar magnet or put the magnet inside such a coil as in Fig. Letters of a Radio-Engineer to His Son Have you ever seen a small bar magnet placed within the field of attraction of a large electromagnet? Astounding Stories of Super-Science February 1930 Now suppose we place one of the bar magnets on the table. Electricity for the 4-H Scientist Idaho Agricultural Extension Service Bulletin 396, June, 1962 2011-11-18T03:00:30.487Z The same remark applies to the bar magnet. How it Works Dealing in simple language with steam, electricity, light, heat, sound, hydraulics, optics, etc., and with their applications to apparatus in common use A straight magnet is called a bar magnet. How Two Boys Made Their Own Electrical Apparatus Containing Complete Directions for Making All Kinds of Simple Apparatus for the Study of Elementary Electricity It is formed by a bar magnet, a coil about it through which a current can flow, and a thin disc of iron. Letters of a Radio-Engineer to His Son Of course you have, and you have noticed that, when the north pole of the bar magnet was pointed toward the electromagnet, the bar was attracted. Astounding Stories of Super-Science February 1930 A movable bar magnet pivots so its South pole is near the North pole of a stationary magnet. Electricity for the 4-H Scientist Idaho Agricultural Extension Service Bulletin 396, June, 1962 2011-11-18T03:00:30.487Z If bar magnets cannot be obtained, use a child's horse-shoe magnet. Ontario Teachers' Manuals: Nature Study To make a small compound bar magnet, magnetize several harness-needles, or even sewing-needles, and then bind them into a little bundle with all the N poles at the same end. How Two Boys Made Their Own Electrical Apparatus Containing Complete Directions for Making All Kinds of Simple Apparatus for the Study of Elementary Electricity Indeed, there is nothing which can be done by an ordinary bar magnet which cannot be done by a coiled wire conveying an electric current. Aether and Gravitation Lay your bar magnet on a table, and hold the needle over the equator of the magnet. Fragments of science, V. 1-2 A bar magnet horizontally poised on a vertical pivot point, like the needle of a mariner's compass. Electricity for Boys To illustrate this principle of magnetic attraction and repulsion, I have prepared these two bar magnets, which are simple bars of steel which have been charged with magnetic properties. How to Become Rich A Treatise on Phrenology, Choice of Professions and Matrimony To avoid this, a small bar magnet, shown in the Fig. How Two Boys Made Their Own Electrical Apparatus Containing Complete Directions for Making All Kinds of Simple Apparatus for the Study of Elementary Electricity Place now a vertical loop opposite to the pole of a short bar magnet cemented to the glass plate with the N pole facing it. Scientific American Supplement, No. 643, April 28, 1888 In the practical construction of magneto generators more than one bar magnet is used, and, in addition, the conductors in the armature are so arranged as to include a great many loops of wire. Cyclopedia of Telephony & Telegraphy Vol. 1 A General Reference Work on Telephony, etc. etc. The general facts of magnetism are most simply illustrated by a magnetized bar of steel, commonly called a bar magnet. Six Lectures on Light Delivered In The United States In 1872-1873 In the drawing M is a bar magnet contained in the rubber case, L. A bobbin, or coil of wire, B, surrounds one end of the magnet. Edison, His Life and Inventions Small Horseshoe Magnets may be made from needles or from other pieces of steel used for bar magnets. How Two Boys Made Their Own Electrical Apparatus Containing Complete Directions for Making All Kinds of Simple Apparatus for the Study of Elementary Electricity A "horseshoe" magnet is a bar magnet bent into the form of the letter "U." Steam, Steel and Electricity These steel bars were all magnetized separately and placed with like poles together so as to form a single bar magnet. Cyclopedia of Telephony & Telegraphy Vol. 1 A General Reference Work on Telephony, etc. etc. Placing a small magnetic needle near a bar magnet, it takes a determinate position. Six Lectures on Light Delivered In The United States In 1872-1873 When the bar magnet was suddenly withdrawn from the helix, the galvanometer needle was again deflected, but now in the opposite direction, showing that the direction of the current in the helix had been reversed. Beacon Lights of History, Volume 14 The New Era; A Supplementary Volume, by Recent Writers, as Set Forth in the Preface and Table of Contents The "Needle," that is the short bar magnet, may be made of watch-spring. How Two Boys Made Their Own Electrical Apparatus Containing Complete Directions for Making All Kinds of Simple Apparatus for the Study of Elementary Electricity All bar magnets, when suspended by their centers, turn their ends to the North and South, a familiar example of this being the ordinary compass. Steam, Steel and Electricity Two permanently magnetized bar magnets 4-4 are employed, these being clamped together at their upper ends, as shown, so as to include the soft iron block 5 between them. Cyclopedia of Telephony & Telegraphy Vol. 1 A General Reference Work on Telephony, etc. etc. It consists of a permanent bar magnet bent so that it will fit into the shell of the receiver as shown at A in Fig. The Radio Amateur's Hand Book Dr. Tyndall says we can, and I hope by the help of these small bar magnets to show you how he explains it. The Fairy-Land of Science For the bar magnets described, a piece of sheet-tin, upon which to lay them, is all that is needed for an armature. How Two Boys Made Their Own Electrical Apparatus Containing Complete Directions for Making All Kinds of Simple Apparatus for the Study of Elementary Electricity In actual service an electro-magnet is used instead of, or in addition to, the bar magnets described above. Steam, Steel and Electricity Two straight permanently magnetized bar magnets 1-1 are clamped together at their opposite ends so as to form a horseshoe magnet. Cyclopedia of Telephony & Telegraphy Vol. 1 A General Reference Work on Telephony, etc. etc. There is still the same idea of turning the insect into a sort of bar magnet. The Mason-Bees He carried an insulated wire along the axis of a bar magnet from its pole to its equator, where it issued from the magnet, and was bent up so as to connect its two ends. Faraday as a Discoverer Of course, it takes a little more current to move the magnetic needle when the bar magnet is in place, than it does without the magnet. How Two Boys Made Their Own Electrical Apparatus Containing Complete Directions for Making All Kinds of Simple Apparatus for the Study of Elementary Electricity I magnetise a very fine needle by rubbing it with my bar magnet; I retain only the slenderest part, the point, some five or six millimetres long. The Mason-Bees This is the same as for an ordinary bar magnet, except that the parallel lines through the core may be taken as indicating that the core is laminated, thus conveying the idea of high impedance. Cyclopedia of Telephony & Telegraphy Vol. 1 A General Reference Work on Telephony, etc. etc. |
| 随便看 |
英语例句辞典收录了117811条英语例句在线翻译词条，基本涵盖了全部常用单词及词组的例句翻译及用法，是英语学习的有利工具。