Starch-iodine reaction in slow motion.
https://www.youtube.com/watch?v=R0yn-dbAPHc
Previously:
https://www.homemadetools.net/forum/...330#post211605
https://www.homemadetools.net/forum/...283#post208139
https://www.homemadetools.net/forum/...798#post156106
https://www.homemadetools.net/forum/...275#post192203
https://www.homemadetools.net/forum/...678#post205994
