Johann Wilhelm Ritter
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Johann Wilhelm Ritter was a German chemist, physicist and philosopher. He is associated with the German Romanticism. He is also known for discovering the ultraviolet part of the electromagnetic spectr
Ritter in the uniform of the Bavarian Academy of Sciences, about 1804.
Ultraviolet
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Ultraviolet radiation is electromagnetic radiation of wavelengths of 100–400 nanometers, shorter than that of visible light, but longer than X-rays. Wavelengths between 10 and 100 nanometers are calle
Johann Wilhelm Ritter
…23 January 1810) was a German chemist, physicist and philosopher. He is associated with the German Romanticism. He is also known for discovering the ultraviolet part of the electromagnetic spectrum. He is also credited for the first achieved sustained electrolysis of water and the discovery of electroplating…
Portable ultraviolet lamp (UVA and UVC)
UV radiation is also produced by electric arcs. Arc welders must wear eye protection and cover their skin to prevent photokeratitis and serious sunburn.
Commercial germicidal lamp in butcher shop
A 380 nanometer UV LED makes some common household items fluoresce.