How do human find out ultraviolet light?
Before that we left undiscussed the subject of how this uv light might be discovered. Now all of us, Let’s start! so many kinds of uv led in led market. uv led is now very widely used. But how do we actually go about discovering the light that?
Solar radiation to the earth, except for ordinary visible light, This light should also be included in ultraviolet light(ultraviolet ray) ,earth’s natural UV light origin in the sun. In this way, The sun light through the atmosphere, a large amount of ultraviolet is absorbed by the atmosphere ozone.only a small part of the uv light source reach the earth. The British physicist Herschel found out the infrared light with prismatic spectrum in 1800.

Since then, more scholars ‘ attention that infrared light and ultraviolet light. The German physicist Ritter(Johann Wilhelm Ritter) had taken a serious interest in the invisible light . .he is convinced that the symmetry of North and south poles. And deeply convinced that not visible radiation did exist. . which is ultraviolet light.