The summer is half over. I hope you have been slathering on the sunscreen when venturing outside. If not, doing this experiment might convince you that using sun protection is valuable. The equipment necessary for this test is minimal, some apple rings, some string, and hanger, and, of course, a sunny day. The instructions are easy to follow, and your observation of the results will not take too much time. You’ll find out just how powerful the sun can be. There are some ideas on how to extend this experiment by using various variables.
courtesy of Knovation