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DOOM! Pole shift leading to reversal is theoretically possible. Explained in detail since 18th age.
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[quote:EMPerror:MV8xOTM4MzMwXzMyNDk4MTk0XzM3MTRGMzAw] History is revisited, with corrections made in the initial post. Another video, "Rotating Solid Bodies in Microgravity". [youtube]http://www.youtube.com/watch?v=BPMjcN-sBJ4[/youtube] http://www.youtube.com/watch?v=BPMjcN-sBJ4 [/quote]
Original Message
Explanation for rotation around principal axis of intermediate inertia dates back to the 18th century when Leonhard Euler derrived equations for dynamics of rigid bodies.
[
link to en.wikipedia.org
]
[
link to einstein.stanford.edu
]
A body is never stable when spinning about the intermediate principal axis. It was easily seen in space (Skylab, links from the same page).
[
link to einstein.stanford.edu
]
[
link to einstein.stanford.edu
]
It was spotted, that bolts from untied cargo are flying in straight direction and suddenly flip, starting to spin in the opposite direction. This flipping was cyclic. V.A.Dzhanibekov was intrigued by this phenomenon and documented it. (no translation, but no need for words there)
[
link to www.youtube.com
]
[
link to www.youtube.com
]
It is pure mechanics, law of nature.
Magnetic poles are not stable and reverse their polarity. Is earth's spinning really stable? What are other factors that can make it stable? These questions need really careful consideration.
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