自然界的万物都离不开阳光的恩赐。人们真正了解阳光是从1666年开始的,当时英国科学家牛顿让一束太阳光透过三棱镜投射到白色屏幕上,出现了一道彩虹似的色带,按红、橙、黄、绿、青、蓝、紫的次序排列。这个色带,就是现在我们所说的太阳光谱带。太阳光,是一种能对人眼视觉神经起刺激作用的电磁辐射。电磁辐射的波长范围很广,可见光的波长范围一般是指380纳米 All things in nature are inseparable from the sunshine of the gift. People really understood that the sun started in 1666, when British scientist Newton brought a beam of sunlight through a prism onto a white screen, giving rise to a rainbow-like ribbon of red, orange, yellow, green, blue and green , Purple order. This ribbon is what we now call the solar band. Sunlight is a type of electromagnetic radiation that stimulates human visual nerves. The wavelength of electromagnetic radiation is very wide, the wavelength of visible light generally refers to 380 nm