Klarinet Archive - Posting 000264.txt from 2000/02

From: David Blumberg <reedman@-----.com>
Subj: [kl] re: That thing is *huge*!
Date: Sun, 6 Feb 2000 05:37:25 -0500

Matt wrote:
As the lit diodes are so much more stark to their
surroundings, you get a series of pictures, about 60 times a second, instead
of a constant flickering. Until you start playing a low note on your
contrabass clarinet or tuba. The fundamental, and some of the overtones do
indeed vibrate your eyes. The instrument's frequencies create beats with
the refresh rate, or frequency that the diode is given a current. Thus you
get different frequencies of apparent flickering, due to the different rates
of interference...
Your eyes, although they are not quick enough to compensate to the
vibrations relative to the lighted diodes, are quick enough to make a
composite of the easier-focusing, and non oscillating flat surfaces. That's
why the lighted computer screen and scoreboard numbers seem to vibrate
against the stationary backgrounds.
- Matt

--------------------------------

I'll wager that it is the connection between the Ears, and eyes that causes
them to vibrate. Just this last Friday morning , I was talking to my Eye
Doctor about that very thing - the eye's vibrating (we were talking about
the COWS test), and the connection between the Eyes, and the ears. Example
being that when a child spins around, after done spinning, the eyes still
vibrate for a moment. It is due to the inner ear, and the connection
between the Inner Ear, and the Eyes.

David Blumberg

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