Many minerals in the asbestos family can absorb light with a wavelength measuring two-point three micrometers.
VOA: special.2009.11.17
I wish it didn't say "exit," but it does say "exit," because that kind of weakens my point, but over many auditorium doors a red light just hangs there.
如果这些灯上没有注明出口就好了“,因为这样会削弱我要证明的观点,礼堂的门上一般会挂着一盏红灯。
So up to this point, before it was really established that yes, light is like a particle sometimes, there was this very strong distinction between what is light and what is matter.
所以关于这个观点,在它被真正确立之前,光有时候像粒子,在什么是光和什么是物质之间,有一个非常巨大的区别。
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