Post Aw2892ZhPNiVMSIAAy by wonderofscience@mastodon.social
 (DIR) More posts by wonderofscience@mastodon.social
 (DIR) Post #Aw2892ZhPNiVMSIAAy by wonderofscience@mastodon.social
       2025-07-09T00:53:04Z
       
       0 likes, 0 repeats
       
       The unusual behavior of a handle spinning in space, suddenly reversing its orientation, a striking example of the tennis racket theorem (also called the Dzhanibekov effect).Credti: NASA#science #space #alt4me
       
 (DIR) Post #Aw2893ib9mQguLSmga by countdracula@mas.to
       2025-07-09T04:57:43Z
       
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       @wonderofscience The video isn't playing for me apparently because the file is corrupt. :shrug4:
       
 (DIR) Post #Aw2894Zly4xpZGLFZI by joncounts@mastodon.nz
       2025-07-09T05:03:50Z
       
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       @countdracula @wonderofscience It's working for me. 🤷
       
 (DIR) Post #Aw2895ePyIH2txWTRo by libroraptor@mastodon.nz
       2025-07-09T05:19:57Z
       
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       @joncounts @countdracula @wonderofscience You can see and hear Dzhanibekov himself talk about it here: https://www.youtube.com/watch?v=dL6Pt1O_gSELet me know if you understand what the potato-with-a-threaded-nut is about half-way through.
       
 (DIR) Post #Aw28978wQIHfWuoMfA by joncounts@mastodon.nz
       2025-07-09T05:42:38Z
       
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       @libroraptor @countdracula @wonderofscience Thanks. I love how Dzhanibekov demonstrates it with a potato. Very Russian. Veritasium has a good explanation of the effect too. That threaded nut on the potato is needed to make that third axis of rotation unstable (moment of inertia).The Veritasium video covers some of the history of the effect and how Russians kept the effect in space secret for a decade.Fascinating stuff.https://www.youtube.com/watch?v=1VPfZ_XzisU
       
 (DIR) Post #Aw2898XnDNkzsHRj2O by wonderofscience@mastodon.social
       2025-07-09T00:54:26Z
       
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       Further reading: https://en.wikipedia.org/wiki/Tennis_racket_theorem
       
 (DIR) Post #Aw2898XnDNkzsHRj2P by itsFriday@toot.community
       2025-07-11T19:25:09Z
       
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       @joncounts @libroraptor @countdracula @wonderofscience What is the name of the russian movie he mentiones?
       
 (DIR) Post #Aw289FI688MUnd9n2u by joncounts@mastodon.nz
       2025-07-09T05:52:59Z
       
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       @libroraptor @countdracula @wonderofscience Sadly, Veritasium mentions that the spinning brown blob was clay, not a Russian potato. Someone on the space station needs to do it with a potato.
       
 (DIR) Post #Aw2VScFPIfgaRi6Ukq by libroraptor@mastodon.nz
       2025-07-11T23:46:29Z
       
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       @itsFriday @joncounts @countdracula @wonderofscience At what timepoint? (It's a long video that I don't have patience to search through....)
       
 (DIR) Post #Aw36CbJggrTXEHKgG8 by itsFriday@toot.community
       2025-07-12T06:38:15Z
       
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       @libroraptor @joncounts @countdracula @wonderofscience In the first minute.Found it meanwhile: https://en.m.wikipedia.org/wiki/Salyut_7_(film)Thanks!