摘要
Abstract
According to the relativistic transformation for electromagnetic fields,a calculation for energy and momentum of electromagnetic fields for microwave rectangular resonant cavity in uniform motion is giv-en.The result shows that the energy and momentum(averaged over a period)of electromagnetic fields for the mode(0,n,p),of which the direction of electric field is parallel to the direction of the motion of resonant cavity,is completely analogous to the relativistic energy and momentum of a moving particle.However,the energy and momentum(averaged over a period)of electromagnetic fields for the mode(m,n,0),of which the direction of electric field is perpendicular to the direction of the motion of resonant cavity,is completely dif-ferent with the relativistic energy and momentum of a moving particle.Therefore,when the electromagnetic fields of the two modes respond a sharp change of the motion of cavity’s carrier,the electrical turbulences in-duced in correlative circuit by the responding are different.关键词
微波/谐振腔/电磁场/狭义相对论/能量Key words
microwave/resonant cavity/electromagnetic field/special relativity/energy分类
信息技术与安全科学
