The Persistance of vision is the idea that an image can be retained in the retina for a 25th of a second, this is why we dont see black spaces between the frames in a movie. These devices below prove this theory as they take still images and turn them into moving.
Thaumatrope - Johm Ayrton
A Thaumatrope is a device with an
image on both sides ad when spun in quick succession the images merge to become
one. The first image would be the one half of a full picture and the second
half well.. the other half of the picture. The eye maintains the picture of
view for a fraction of a second so when the device is spun it merges both
pictures into one.
Phenakistoscope – Joseph Plateau
The Phenakistiscope is a disc shaped
wheel with images running around the outside, these images are divided up by a
series of slits. The disc is spun and if you look through the slits from the
underneath of the disc into a mirror it reflects a moving image.
Zoetrope – William Horner
The Zoetrope is a wheel shaped like
a pie dish with slits along the edge. Round the edge also is a string of
images, usually a looped action and when spun, you look through the slits as
again as the eye retains an image, it shows the looped photos like short video
much similar to GIF files.
Praxinoscope -
The Praxinoscope is the IOS7 to the
IOS6 of the Zoetrope, made in 1877, it replaced the slits of the Zoetrope with
a circle of mirrors on the inside reflecting at a down angle towards the image
on the disc below (like a Phenakistoscope). The image on the Praxinoscope made
for a smoother and brighter picture. Progressive editions could allow for up to
15 minutes of film to be played consisting of 500 picture.
Kinetoscope - Tomas Edison
This is the most advanced device of
all ive written about, its consists of a film which is run at 16 frames per
second and view by only one person at a time through a peep style hole. The
actual contraption is a box like object with a hole for viewing. As the
pictures pass the whole it creates a moving picture.
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