Egyptian Night! Chemical Reaction

submitted by SecretlyHistoric from gfycat.com

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[–]useless_aether 2 insightful - 1 fun2 insightful - 0 fun3 insightful - 1 fun -  (0 children)

slo-mo and howto https://melscience.com/en/articles/egyptian-night-experiment-190418/

aka 'iodine clock'. what a cool name