闪烁
发表于 2025-3-21 16:33:47
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acetylcholine
发表于 2025-3-21 21:33:05
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600
发表于 2025-3-22 04:07:12
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magnate
发表于 2025-3-22 05:09:23
Vibrations,tional (or oscillatory) motion. The simplest kind of vibration, exemplified by a pure musical tone, is known as a .. It is found in Nature, if one knows how to look (or listen), as an ingredient of nearly all vibrations—mechanical, electrical, or other. The next chapter will demonstrate its close co
游行
发表于 2025-3-22 11:15:10
Direct Currents,re by some means. Then static equilibrium cannot exist; some motion of charge will occur. For example, a copper wire connected across the terminals of a battery does indeed have an electric field in it. Conduction electrons then flow along the wire, amounting to an ..
murmur
发表于 2025-3-22 15:05:15
Magnetic Forces,ent deflects a magnetized needle: .. After a few months of intense international experimentation, it became clear that (1) steady electric currents produce steady magnetic forces, and (2) these forces are felt by the currents themselves. Most implications, including some of the deeper theoretical on
murmur
发表于 2025-3-22 19:36:31
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愉快么
发表于 2025-3-23 00:06:07
Magnetic Forces,oduce steady magnetic forces, and (2) these forces are felt by the currents themselves. Most implications, including some of the deeper theoretical ones, were already worked out by 1825, largely through the investigations of Ampère.
性满足
发表于 2025-3-23 02:02:05
Sebastian Kirchner,Thomas Breyer-Mayländerbout their own axis. This rotation is quite independent of their orbital motion (“revolution”), as the familiar example of the Earth reminds us. On the molecular, atomic, and subatomic scale, particle spin is a key to many important and beautiful phenomena, some of which will be touched upon later in this book.
anagen
发表于 2025-3-23 06:21:00
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