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What makes phosphorescence last longer?Featured science projectScience project video

Observation

The glow-in-the-dark stickers will continue glowing longest and brightest after absorbing light from the ultraviolet lamp.

phosphorescence experiment results
The stickers will stop glowing sooneset after absorbing light from the infrared lamp. 

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Complexity level:
4
Project cost ($):
20
Time required:
1 hour to prepare, 10 hours for observation
Material availability:
You will need access to UV/infrared lamps
Safety concerns:

NA