YouTube description: You can make a movable hole in soap film with a loop of thread. It's surprising when you first see and it's fun to think about why it behaves the way it does. It's also a useful... continue reading
posted by Aard Vark (oritteropo) 5 years 1 month 2 weeks ago • 512 views • 6:03search results matching tag: inverted
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YouTube description: At first this ghostly octopus drifted past the camera on ROV Hercules flapping wing-like fins, then inverted its webbed arms, ballooning out to reveal eight rows of suckers. This... continue reading
posted by Aard Vark (oritteropo) 5 years 6 months ago • 499 views • 2:27Romans used sealed aquaducts to span valleys too large for raised aquaducts.
posted by newtboy 5 years 7 months 2 weeks ago • 1,045 views • 1:36posted by cricket
9 years 8 months 2 weeks ago • 270 views • 2:50
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