2005/07/29 | 光[Light]
类别(Ω〖物理〗) | 评论(0) | 阅读(28) | 发表于 20:14
Light is a general term referring to electromagnetic radiation in the visible part of the spectrum. Like all electromagnetic radiation, light comes in discrete packets known as photons.

The study of the propagation of light in the presence of various optical elements in known as optics.
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