GLOSSARY:
Spinspeed Law
1 unit of spin = 1 unit
of speed.
One unit of spin can be
converted by collision into one unit of speed.
By a further collision,
it can be converted back into one unit of spin.
Resulting from a
collision, one unit of spin or speed
can be transformed into
any ratio of spin or speed
but the sum of the spin
and speed is always one unit.
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