within the limits of experimental error, this was equal to the measured speed of propagation of light . 在實(shí)驗(yàn)誤差范圍內(nèi),這數(shù)值等于光的傳播速度的測量值。
fermat's principle is not so much a computational device as it is a concise way of thinking about the propagation of light . 費(fèi)馬原理更多的是對光的傳播的一種簡明看法,而不是一種計(jì)算工具。
photonic crystals are artificially fabricated materials, which can be used to prohibit the propagation of light winthin the photonic band-gap or localize light in specialized areas around defedts 摘要光子晶體材料是一種由不同電介質(zhì)周期性分布而形成的人工材料,在自然界中存在較少。
photonic crystals have recently been studied extensively because they offer unique ways of tailoring the propagation of light . a number of methods have been developed to create the periodic structures possessing photonic band gap ( pbg ) 光子晶體是一種介電常數(shù)周期性變化排列的人工晶體,它提供了一種完全不同的新的控光機(jī)制,因而被稱為“光的半導(dǎo)體”。