This file is from Wikimedia Commons and may be used by other projects.
The description on its file description page there is shown below.
Summary
DescriptionCycloidAnim04.gif
animation of rolling circle generating a cycloid; black and white, anti-aliased
Date
6/2/07
Source
Own work
Author
Matthew Conroy
Other versions
Licensing
Public domainPublic domainfalsefalse
I, the copyright holder of this work, release this work into the public domain. This applies worldwide. In some countries this may not be legally possible; if so: I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.
Captions
A cycloid (or an ordinary trochoid) generated by a point linked to a circle rolling without slipping on a line.
Une cycloïde (une trochoïde commune) engendrée par un point lié à un cercle roulant sans glisser sur une droite.