大家都知道,光把能量运送到很远的距离。光的能量和实物互相作用,就成为了热的形式:被照射的表面就会变得热起来。这种能量的运送是怎样发生的呢?依照前世纪就已经建立的学说:光是电磁波,它用很高的速度传播着(在真空中每秒约300,000仟米)。有许多现象的解释对於波动学说是有利的:例如光的折射、干涉(就是光波的重叠,在空间某些点光波被加强,在某些点光波被削弱)、绕射(光波绕过微小的障碍物)和某些其他 Everyone knows that light transports energy far away. The energy of light interacts with physical objects and becomes a form of heat: the irradiated surface becomes hot. How did this energy transfer occur? According to the theory that had been established in the previous century: Light is an electromagnetic wave that propagates at a very high speed (about 300,000 feet per second in a vacuum). There are many explanations for phenomena that are beneficial to wave theory: for example, light refraction, interference (that is, overlap of light waves, light waves are strengthened at certain points in space, light waves are weakened at certain points), diffraction (light waves bypass the tiny Obstacles) and certain other