October 5, 2018 06:09 pm PDT
Original Link: http://feeds.boingboing.net/~r/boingboing/iBag/~3/FcJR5W9ncO0/how-to-spin-a-coin-for-two-min.html
How to spin a coin for two minutes
Friction is what stops coins from spinning. In this video, The Action Lab demonstrates a number of spinning things nd spinning surfaces to explain how friction affects how long they spin, and the best surfaces for keeping them spinning as long as possible. Read the rest
Original Link: http://feeds.boingboing.net/~r/boingboing/iBag/~3/FcJR5W9ncO0/how-to-spin-a-coin-for-two-min.html
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