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From: peter@sugar.UUCP (Peter da Silva)
Newsgroups: comp.sys.amiga,comp.sys.mac,comp.sys.atari.st,rec.music.makers,rec.music.synth
Subject: Re: Sonic Holography.
Message-ID: <1239@sugar.UUCP>
Date: Mon, 7-Dec-87 06:48:35 EST
Article-I.D.: sugar.1239
Posted: Mon Dec  7 06:48:35 1987
Date-Received: Sun, 13-Dec-87 01:42:46 EST
References: <7536@eddie.MIT.EDU> <2476@gryphon.CTS.COM>
Organization: Sugar Land UNIX - Houston, TX
Lines: 17
Summary: Bach to the future.
Xref: mnetor comp.sys.amiga:12088 comp.sys.mac:10796 comp.sys.atari.st:6690 rec.music.makers:1182 rec.music.synth:2128

(Richard Sexton) writes:
> There was a display at the Ontario Science center, ohh, 12 years or so
> ago, about MC Escher, that had a ball bouncing "up" an ever increasing
> staircase, with this tone, going up in pitch.
> 
> It went up in pitch for the 1/2 hour I stood there. :-)
> 
> Any clues ?

See Johann Sebastian Bach's "endlessly rising canon". This is a very old
illusion, based on the fact that a note sounds very much like the same note
in the next octave.

Display hack time, Leo?
-- 
-- Peter da Silva  `-_-'  ...!hoptoad!academ!uhnix1!sugar!peter
-- Disclaimer: These U aren't mere opinions... these are *values*.