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Experiment with your Mini Black Light key chain for a personal fluorescent show! "Black Light" is really ultra-violet light, which is naturally present as a component in sunlight. Ultra-violet wavelengths are very short with a very high frequency, and can be used to detect florescent material that would remain invisible under normal conditions. When you shine ultra-violet light on fluorescent material, it lights up with a beautiful bluish-green luminescence. Try using the black light with the the Invisible Ink Pen and leave secret messages that can only be revealed with your Mini Black Light!
20 Dollar Bill / Money not included.
Recommended for children ages 6 and up. |
