The classical way of demonstrating surface tension.
When talking about surface tension, the classical thing to do is to talk about the shape of drops of water.
As seen before in this post, the drops of water act as lenses.
It is pretty amazing how much water you can pile on a single coin!
If you can’t see it from the photos, here’s a video. But rather than watching the video, you should try it yourself. It’s fun!
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