In 1818 Fresnel entered a competition sponsored by French Academy.1818年菲涅耳參加了法國(guó)科學(xué)院主辦的一次競(jìng)賽.The difficulty was resolved by Fresnel with his addition of the concept of interference.菲涅耳通過(guò)加進(jìn)來(lái)干涉概念,解決了這個(gè)困難.In many cases, the Si...