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uv light - blacklight?

uv-light

uv-light and blacklight are not similar, as some people may think. why is this so? because blacklight has only a certain part of the wave's spectrum of uv-light.

there are three sections of uv-light :

uv-a: waveband 380-315 nm

uv-b: waveband 315-280 nm

uv-c: waveband 280-100 nm

the uv-light ( near uv-light ) can also be called blacklight. the blacklight has a waveband of 380 nm to 345 nm which means that it is very close to the visible band of light. people perceive this light in a bluish glimmering way.

why is black light used in arts, theatre, music or in discos etc?

many objects start to glow when they are illuminated with uv-light. these objects are fluorescenting i.e. they absorb the short-waved light of the blacklight and are later radiating a long-waved, visible light. this glowing with the influence of uv-radiation is known as fluorescence. this fluorescence evokes a fascination and it affects the soul in a magical way which not only leads to children's eyes glimmering but also to adults.

the uv-b light ( middle uv-light ) is used to reach a nice tan ( e.g. this light is used in solaria). it can, however, also happen that you can burn your skin ( sunburn ).

the uv-c light ( distant uv-light ) has the shortest waves of all sorts of uv-light. therefore, this kind of uv-light is both very energetic and dangerous for all kinds of creatures. when the ozone layer is unimpaired it filtrates this spectrum.

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