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Joseph Plateau
Phenakistoscope
Joseph Antoine Ferdinand Plateau (14 October
1801  15 September 1883) was a Belgian
physicist. He was the first person to
demonstrate the illusion of a moving image. To
do this he used counter rotating disks with
repeating drawn images in small increments of
motion on one and regularly spaced slits in the
other. He called this device of 1832 the
phenakistoscope.
A Phenakitstoscope works by creating an image
when you spin the disc around and look through
the small slits whilst reflecting it in a mirror.
http://www.youtube.com/watch?v=94OHrt755QU
Online sources sometimes refer to this
invention as the Phantasmascope or the
Phantascope.
As the images spin so quickly the image
becomes blurred and this creates an animation.
The zoetrope came later and didnt require a
mirror and unlike the phenakistoscope it could
be used by more than one person at a time.
http://www.youtube.com/watch?v=2rzwdRqsuVM

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Joseph Plateau