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Random Thoughts
I read the Techknowledgey 2014
column in the March issue with
great interest. I have been wearing
such a device on my wrist for the
past 12 years; it is the Seiko Kinetic
watch.
If you listen carefully, you can
hear the mechanism spinning a
generator (with 'random' wrist
motion) which charges a battery,
which powers an analog watch
(which incidentally keeps amazingly
good time: ± one second in 90
days!). It is made of titanium and is
not bulky.
The WITT generator is a very
nice device and will certainly have
many applications — particularly
at sea.
Richard Turner KA8HXR
Yeah, I'd forgotten about
self-winding watches. I seem to
remember having one when I was a
kid. I think it broke after a couple
weeks.
I have always taken issue with
physics teacher’s insistence that
perpetual motion is physically
impossible. I suppose eternal
perpetual motion is, as you have to
consider friction, the second law of
thermodynamics, and so forth. You
can certainly play forces like gravity
and inertia against each other for a
long, long time, however. I'm pretty
sure that's how the solar system
works.
Many years ago, a sailor buddy
explained to me that a sailboat can
actually travel faster than the wind
Continued on page 52
READER FEEDBACK
May 2014 7