Who discovered the ultraviolet ray?
Johann Ritter is best known for his discovery of ultraviolet light in 1801. A year earlier, in 1800, William Herschel discovered infrared light. This was the first time that a form of light beyond visible light had been detected.
How was UV rays discovered?
UV radiation was discovered in 1801 when the German physicist Johann Wilhelm Ritter observed that invisible rays just beyond the violet end of the visible spectrum darkened silver chloride-soaked paper more quickly than violet light itself. In 1960, the effect of ultraviolet radiation on DNA was established.
What are the UV rays?
Ultraviolet (UV) radiation is a type of energy produced by the sun and some artificial sources, such as solariums. The sun’s ultraviolet (UV) radiation is the main cause of skin cancer. UV damage also causes sunburn, tanning, premature ageing and eye damage.
Where is ultraviolet found?
Since the Earth’s atmosphere absorbs much of the high-energy ultraviolet radiation, scientists use data from satellites positioned above the atmosphere, in orbit around the Earth, to sense UV radiation coming from our Sun and other astronomical objects.