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∂CSL Prof. Petr Beckmann↓Box 2298↓Boulder, CO 80306∞

Dear Petr:

	Keep up the good work, but every now and then we catch you
in a mistake.

	Consider a 3 year old on a swing vs the Honorable Tip O'Neill
on the same swing.  The period of a pendulum 2pi*sqrt(l/g) depends only on the
radius of inertia and not on the mass.  We imagine that the honorable
Tip is taller than the three year old and therefore will have a
higher center of gravity.  On the other hand we must take into
account the weight of the seat and the ropes.  If these are very
light, then the period will be longer for the three year old, since
the center of inertia will be near the center of mass of the three
year old or O'Neill in the two cases.  On the other hand, if the
rope is very heavy, then the center of inertia will be near that
of the rope for the three year old and thus the period will be longer
for Tip.  Naturally there is a an intermediate mass of the rope
in which the period will be the same.  So watch it Petr.
Now if Tip and the three year old were attached to a spring, then
your conclusion would be correct.

	While the above trivium triggered this letter, now that I
think of it, there is some actual business.  Some of us, including
Miro Todorovich, David and Gregory Chudnovsky and me, have been
thinking about a magazine along the lines of the enclosed writeup.
We have some leads on money, a lot of which would be required.

	1. Would you like to be involved, e.g. as a member of the
Editorial Board?

	2. Do you know any people with the right views and
capabilities to be considered a candidates for editor?

.reg