On a clear day, the brightness of the reflection by a large snow up to 12,000 lumens, if we look directly in the absence of any protective measures with ray ban sunglasses sale, the light will cause "snow blindness". Visible light is the human eye can detect light. We see the visible light emitted by the sun appears to be colorless, that is, we often say that the white. In fact, it is the frequency by a variety of shade mixture. In the spectral range of visible light all the shade of a mixture of light is a colorless, that is, white. (For more information, see the light of the principle)
The quality ray ban aviator sunglasses sunglasses is a very effective "light regulation". The sunglasses can adjust the external light, making it suitable for the human eye. In the next section, we will introduce a variety of technical sunglasses manufacturer used to adjust the light. To better understand these technologies, we must first understand the light. A bunch of light waves have a certain amount of electromagnetic energy. Wave size is wavelength measured. The visible wavelength range 400-700 nm. Light wave energy and inversely proportional to wavelength, the shorter the wavelength, the higher the energy of ray ban sunglasses sale. Purple energy in the visible red light energy minimization, while the top of the visible light spectrum is ultraviolet. In fact, natural light contains large amounts of ultraviolet. Due to the high energy of ultraviolet rays, ultraviolet rays can damage your cornea and retina.
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