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The Gluggle Jug, or Glug Glug Jug has a really interesting mechanism. And it took way longer to work out how it works than I thought it would.
You can also discuss this video on REDDIT: https://stvmld.com/wm_wtfek
Mark Rober’s beer bottle video: https://youtu.be/GMb6GNYPqXA
Smarter Every Day’s poop splash video: https://youtu.be/-XNDM4eAn1U
You can buy my books here:
https://stevemould.com/books
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