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On Sat, 3 May 2025 22:01:55 +0000, ProkaryoticCaspaseHomolog wrote:
Sorry, Richard.Wrong, Richard.>
>
The angular momentum of a rotating object does not disappear due
to friction, but gets dispersed even down to the molecular level.
>
If you spin up a gyroscope in an "anti-earthwise" direction, the
whole Earth slows in its rotation. Then, as the angular momentum
is dispersed due to air friction, the whole Earth eventually speeds
back up, but the speed-up of the Earth is not necessarily immediate
because the angular momentum is first dispersed in whirls and
vortices of the air.
>
If you spin the gyroscope in vacuum, the coupling between the
gyroscope's rotation and the Earth's rotation due to friction with
the bearings is more immediate.
>
Conservation of angular momentum applies to a CLOSED SYSTEM.
It is nonsense to claim that it is not conserved because individual
components of the closed system may speed up or slow down.
FRICTION = HEAT!
>
IT'S A SHAME THAT YOU DIDN'T CONSIDER THAT. HEAT BY CONDUCTION,
CONVECTION IN AIR AND ALSO RADIANT HEAT (YES, ELECTROMAGNETIC FORM OF
HEAT).
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