Radiations,Visible

《英文msh詞典》Radiations,Visible
[入口詞] Radiations,Visible
[主題詞] Light
[英文釋義] That portion of the electromagnetic spectrum to which the human eye is sensitive. Light is about 400 to 800 nanometers in wavelength,i.e.,between the ultraviolet and infrared spectra.

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