UV intensity Checker Phone Ultraviolet Radiation Test Key Chain Phonechain

Specifications

UV intensity Checker Phone Ultraviolet Radiation Test Key Chain Phonechain

•These UV beads are an inexpensive fun way to make the invisible become visible.

•The solar pony beads are pale in visible light, such as indoors or if they are shielded by a UV screen such as automobile glass or sunglasses. The Ultra-violet sensitive beads contain a pigment which changes color when exposed to UV light from the Sun or other UV source.

•Many of today's space telescopes observe colors of light not in the visible spectrum such as infrared and ultraviolet.

•One 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.

•In five assorted colors, all beads are pale, off-white in the absence of UV light.

•The ultraviolet beads will cycle back and forth (to bright colors and back again) over 50,000 times!

•Become an ultraviolet detective with these amazing UV-sensitive beads! It's solar magic in action!

100% Brand new and high quality!
Lightweight, fashion, sweet, beautiful and easy to carry
Reflect the Ultraviolet intensity during the time and remind female who care health and beauty pay attention to the intensity of UV
In the absence of Ultraviolet radiation the chain shows white, The stronger of Ultraviolet the more violet will shows [note: Just the chain change the color, not the pendant.
This Chain suitable for mobile phones , bags, Handbag and Key

It is a good gift for you to send to your girlfriend ,lover or other people you care for.