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眼睛的構造複雜,功能神密。並且,同是一隻眼睛,在白天與在夜間幾乎成了兩件東西。我們必须拿另外一套本領來使用『夜眼』,才能使眼睛在夜間充分發揮其功能。本文卽在於說明眼睛在白天與在夜間有何不同,並由此不同之點中貪得便利,改進夜晚視力。眼睛有很多地方像是一個無線電收音機中的收音器,收音器能接受某一限度內各種波長的電磁波,眼睛裏的視網膜也剛巧如此,收音器與視網膜所收的波長雖有很大差別,而性質相同,不過分置在電磁带(Electro-magnetic spectrum)的不同的兩端而已。無線電波長以公尺爲單位計算,光的波長以十萬萬分之一公尺爲單位(千分秒Millimicron)計算。宇宙線與X光的波長比光波短,熱波比光波長而介於光波與無線電波之間。當光線投射到視網膜上的時候就産生一種電勢。視神經將這種電勢傳達到大腦,造成視覺。
The complex structure of the eye, functionally secret. And with the same eye, it became almost two things during the day and night. We have to use another set of skills to use Night Eye in order to make our eyes fully function at night. The purpose of this article is to show how the eye is different during the day and night and to make it easier for different points to improve night vision. There are many places like the eyes of a radio radio radio, the radio can accept a certain limit within a variety of wavelengths of electromagnetic waves, the eyes of the retina also happens to be the same, the radio and the retina received by the wavelength although very different, and It is the same in nature, but it is placed on different ends of the Electro-magnetic spectrum. The radio wavelength is calculated in meters and the wavelength of light is calculated in tenths of one millionth of a meter (Millimicron). Cosmic rays and X-ray wavelengths shorter than light waves, heat waves than the wavelength of light and light waves and radio waves between. When the light cast on the retina when it produces a potential. The optic nerve transmits this potential to the brain, causing vision.