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Black Light 350 fluorescent light bulbs emit light at the 350 nanometer wavelength. These bulbs are most often used for industrial applications.
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Black Light Blue light bulbs are mostly used for novelty applications. Often used in nightclubs and stagelighting, fluorescent and neon colors "glow" under this kind of light. Great for Halloween parties or to light up that old Jimi Hendrix poster you may have stored in the attic.
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