Janice VanCleave's Play and Learn About Science
Question: What effect do SPF numbers on sunblock lotions have on their effectiveness of filtering UV radiation? Answer: You can discover this answer for yourself, but Do not use your skin to test the effectiveness of SPF numbers! Instead, use solar active materials. I have found several materials on the Solar Active website that can [...]
The diagram shows pony beads that contain dye molecules that changes from white to a specific color when exposed to ultraviolet light. Ultraviolet light (also called UV light) is a type of radiation (wave energy) that is not visible to the human eye. While you cannot see UV light, this high-energy light excites the dye [...]
Question: Why do scorpions glow under a black light? Answers: The scorpion has phosphors in its exoskeleton. A phosphor is a term used to describe any substance that can absorbs UV radiation and release visible light. Both UV radiation (light) and visible light are forms of electromagnetic radiation-EMR. The UV light has much higher energy [...]