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The Luminescence Of Black Light - Online Term Paper

The Luminescence Of Black Light

Black Light. What is it? It is a portion of the Ultra-Violet Spectrum
that is invisible to our eyes. We can not distinguish it. However, when this
radiation impinges on certain materials visible light is emitted and this is
known as "fluorescence." Fluorescence is visible to the human eye, in that it
makes an object appear to "glow in the dark."
There are several sources of ultra-violet light. These sources are: the
sun, carbon arcs, mercury arcs, and black lights. In most cases, the production
of ultra-violet light creates a reasonable amount of heat.
Many materials exhibit the peculiar characteristic of giving off light
or radiant energy when ultra-violet light is allowed to ...

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spectrum, we have a transient light phenomenon. Ultra-violet light is an
exciting agent which causes luminescence to occur.
There are many materials which exhibit fluorescent characteristics.
Many of which are even organic. Teeth, eyes, some portions of the skin, and
even blood exhibit fluorescent qualities. Naturally occurring minerals such as:
agate, calcite, chalcedony, curtisite, fluorite, gypsum, hackmanite, halite,
opal scheelite, and willemite, also have similar characteristics. These
materials can be used in industries.
The radiance of ultraviolet light is measured in units called
"Angstrom." The intensity of ultraviolet fluorescence is the greatest between
the 5000 and 6000 range. This being the range between the green and yellow hues.
Ultra violet light is not readily visible. It is not visible because
certain materials reflect it. Ultra-violet light is made visible due to the
fact that it causes a reaction at the atomic level. When it strikes the atom,
some of ...

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The Luminescence Of Black Light. (2005, October 18). Retrieved November 23, 2024, from http://www.essayworld.com/essays/The-Luminescence-Of-Black-Light/35070

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PAPER DETAILS

Added: 10/18/2005 12:43:48 PM
Category: Science & Nature
Type: Free Paper
Words: 442
Pages: 2

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