Read the full experiment here: http://www.stevespanglerscience.com/lab/experiments/uv-reactive-beads
Not all sunscreen lotions are the same, as can be evidenced by a lobster-like appearance after a day of working outside. SPF 15 just didn’t do the trick. Instead of using your skin as a detector of ultra-violet light (UV), try experimenting with Energy Beads or UV Beads. These indicator beads change color when exposed to UV light. It’s an amazing way to test the effectiveness of sunscreen or to see if UV light is really blocked out by filters in sunglasses.
Want more experiments like this? Check out http://www.stevespanglerscience.com/product/naked-eggs-and-flying-potatoes
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