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From http://www.jwz.org/xscreensaver/xscreensaver-5.30.tar.gz
[xscreensaver]
/
hacks
/
config
/
epicycle.xml
diff --git
a/hacks/config/epicycle.xml
b/hacks/config/epicycle.xml
index 09beb9a812b031dc0532f5e78b0ac7965ad2006c..94ce30d9176c8488ad70945ccb8f8f8f776eea01 100644
(file)
--- a/
hacks/config/epicycle.xml
+++ b/
hacks/config/epicycle.xml
@@
-42,10
+42,11
@@
<xscreensaver-updater />
<_description>
<xscreensaver-updater />
<_description>
+A pre-heliocentric model of planetary motion.
+
This draws the path traced out by a point on the edge of a
circle. That circle rotates around a point on the rim of another
This draws the path traced out by a point on the edge of a
circle. That circle rotates around a point on the rim of another
-circle, and so on, several times. These were the basis for the
-pre-heliocentric model of planetary motion.
+circle, and so on, several times.
http://en.wikipedia.org/wiki/Deferent_and_epicycle
http://en.wikipedia.org/wiki/Deferent_and_epicycle