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Many of today's space telescopes observe colors of light not in the visible spectrum such as infrared and ultraviolet.
Children can make a simple bracelet from a standard pipe cleaner or strip of rawhide which can function as a UV detector. Use your imagination to think of other things to use them for. Many other experiments are possible as well test sunglasses for the effectiveness of their UV protection, or even suntan lotion.
Expose them to sunlight and they immediately change from clear to colored. Cover them up and within minutes they are clear again. The UV Beads contain
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50 Assorted Color Beads Beads measure 9mm in diameter. Holes measure 3mm. These UV beads are an inexpensive fun way to teach physics and make the
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50 Premium Translucent Beads Change to Bright RED in Presence of UV Light Beads measure 9mm in diameter. Holes measure 3mm. Available in Multilpes of
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Watch white beads change to blue when taken outside the building! When returned they turn back to white. What causes the change? Humidity?
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