That’s super cool. If you’re doing it in a lake, I wonder if there’s a less toxic propellent you can use. I’d love to show my kids but I don’t want them putting ink and soap into natural bodies of water
If you put some soap or ink on a leaf, you obtain a ink propelled boat, using the Marangoni effect. The ink or the detergent has a lower surface tension than water and its flow provides thrust to push the boat forward https://buff.ly/2tnyzW6 [gif: https://buff.ly/2X23epo ]pic.twitter.com/rbRTU7BxtF
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And what about doing that in a sink, for example?
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Interesting.. but please don’t put soap in a natural water body.
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Well, that is fountain. Thanks for the suggestion, anyway.
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Thank you! I have known about since I was a child. But I never knew the principals behind it. Now I know!
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You're welcome!
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Can I go from Cuba to the US using three barrels of detergent
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you'll never find the 3 barrels of detergent in Cuba...
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The ink or soap breaks the surface tension of the water behind the leaf. The leaf is actually being pulled by the remaining surface tension. This is why soap and water is such a great combination for cleaning.
Hvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi
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This is a plot point in Cixin Liu's Death's End.
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Came here to type this
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Čini se da učitavanje traje već neko vrijeme.
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