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词汇 Visible region
分类 英语词汇 英语翻译词典
释义

Visible region

中文百科

可见光 Visible spectrum

（重定向自Visible region）
我们通常所说的白光，在通过三棱镜产生色散（折射率随波长改变）后即可形成可见光谱
可见光谱激光 (红光, 绿光, 蓝紫光)
可见光谱只占有宽广的电磁波谱的一小部分

可见光（Visible light）是电磁波谱中人眼可以看见（感受得到）的部分。这个范围中电磁辐射被称为可见光，或简单地称为光。人眼可以感受到的波长范围一般是落在390 到 700nm。对应于这些波长的频率范围在430–790 THz。但有一些人能够感知到波长大约在380到780奈米之间的电磁波。正常视力的人眼对波长约为555纳米的电磁波最为敏感，这种电磁波处于光学频谱的绿光区域。

英语百科

Visible spectrum 可见光

（重定向自Visible region）
White light is dispersed by a prism into the colors of the visible spectrum.
Newton's color circle, from Opticks of 1704, showing the colors correlated with musical notes. The spectral colors from red to violet are divided by the notes of the musical scale, starting at D. The circle completes a full octave, from D to D. Newton's circle places red, at one end of the spectrum, next to violet, at the other. This reflects the fact that non-spectral purple colors are observed when red and violet light are mixed.
Newton's observation of prismatic colors (David Brewster 1855)
Rough plot of Earth's atmospheric opacity to various wavelengths of electromagnetic radiation, including visible light

The visible spectrum is the portion of the electromagnetic spectrum that is visible to the human eye. Electromagnetic radiation in this range of wavelengths is called visible light or simply light. A typical human eye will respond to wavelengths from about 390 to 700 nm. In terms of frequency, this corresponds to a band in the vicinity of 430–770 THz.
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