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Portable ultraviolet lamp
Portable ultraviolet lamp
UV radiation is also produced by electric arcs. Arc welders must wear eye protection and cover their skin to prevent photokeratitis and serious sunbur
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
Commercial germicidal lamp in butcher shop
A 380 nanometer UV LED makes some common household items fluoresce.
A 380 nanometer UV LED makes some common household items fluoresce.
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James Clerk Maxwell (1831–1879)
James Clerk Maxwell (1831–1879)