PRO
发表于 2025-3-30 09:09:05
http://reply.papertrans.cn/19/1811/181006/181006_51.png
儿童
发表于 2025-3-30 14:34:23
Electromagnetic waves in conductors,e densities of these carriers (Table 12.1) varies from 9 × 10. m . in a noble metal to about 10.–10. m . in semiconductors and dense plasmas, but can be as little as 10. m . in weakly ionized plasmas like the ionosphere, while interstellar gas has a density of about 10. m ..
COLIC
发表于 2025-3-30 18:31:55
Magnetostatics,lectric current . in matter and introduce the concept of the magnetic field ., sometimes called the magnetic induction field. The relationships between steady or magnetostatic fields having ../. = 0 and steady or direct electric currents having ../. = 0 are then developed and illustrated with examples.
一窝小鸟
发表于 2025-3-30 21:21:27
Electromagnetism and relativity,ons of magnetostatics in terms of the vectors . and .. Finally we show, using a four-dimensional notation, that it is possible to reduce Maxwell’s four equations to just one equation which expresses directly the invariance of electromagnetism under the Lorentz transformation.
FEIGN
发表于 2025-3-31 04:34:37
10楼
严峻考验
发表于 2025-3-31 05:48:17
10楼