Message-ID:

A Linux machine! because a 486 is a terrible thing to waste! (By jjs@wintermute.ucr.edu, Joe Sloan)

tech / sci.astro.amateur / Dzhanibekov effect

Dzhanibekov effect

<003ab338-806f-4925-b583-1031f01d6e24n@googlegroups.com>

http://rslight.i2p/tech/article-flat.php?id=11217&group=sci.astro.amateur#11217

copy link Newsgroups: sci.astro.amateur

X-Received: by 2002:ad4:4584:0:b0:67a:21aa:6512 with SMTP id x4-20020ad44584000000b0067a21aa6512mr472652qvu.3.1701277811609;
Wed, 29 Nov 2023 09:10:11 -0800 (PST)
X-Received: by 2002:a17:902:e88f:b0:1c9:c879:ee82 with SMTP id
w15-20020a170902e88f00b001c9c879ee82mr4621980plg.11.1701277811218; Wed, 29
Nov 2023 09:10:11 -0800 (PST)
Path: i2pn2.org!i2pn.org!usenet.network!news.neodome.net!weretis.net!feeder6.news.weretis.net!usenet.blueworldhosting.com!diablo1.usenet.blueworldhosting.com!peer02.iad!feed-me.highwinds-media.com!news.highwinds-media.com!news-out.google.com!nntp.google.com!postnews.google.com!google-groups.googlegroups.com!not-for-mail
Newsgroups: sci.astro.amateur
Date: Wed, 29 Nov 2023 09:10:10 -0800 (PST)
Injection-Info: google-groups.googlegroups.com; posting-host=2600:1010:a011:8ec0:b871:457e:c757:babe;
posting-account=q0dsSgoAAAAV0Xmlj0Dt_FOS5sPk02Ml
NNTP-Posting-Host: 2600:1010:a011:8ec0:b871:457e:c757:babe
User-Agent: G2/1.0
MIME-Version: 1.0
Message-ID: <003ab338-806f-4925-b583-1031f01d6e24n@googlegroups.com>
Subject: Dzhanibekov effect
From: csoka01@gmail.com (StarDust)
Injection-Date: Wed, 29 Nov 2023 17:10:11 +0000
Content-Type: text/plain; charset="UTF-8"
X-Received-Bytes: 1662

by: StarDust - Wed, 29 Nov 2023 17:10 UTC

https://www.facebook.com/PhysicsPlusAstronomy/videos/1047486676300952/?mibextid=CDWPTG

NASA astronaut demonstrating the Dzhanibekov effect. An astronaut noticed this physical behavior of a handle, that turned out to be the proof of a theorem: the tennis racket theorem (also dubbed the Dzhanibekov effect)

The Tennis Racket Theorem states that an object with three unique moments of inertia, rotation about the axis of intermediate moment of inertia is unstable, while rotation about the other two axis is stable.

The effect is named after the Russian cosmonaut Vladimir Dzhanibekov who discovered this phenomenon while in space in 1985.