What’s a Thaumatrope? What did Michael Faraday do in his spare time from advancing the scientific field? Walt Disney learned about all this and more, so tune in to find out too!
1. Persistence of Vision:
a. Positive After-images– When an image quickly moves out of field of vision, but an afterimage briefly remains behind.
b. Negative After-images– When you look at a bright pattern, then look at a white/blank background and continue to briefly see that pattern of a “complementary color to the original.”
2. Thaumatrope (1824)
a. Invented by John Ayton Paris, British physician, in 1824 and talked about this invention in a book he published in 1827.
b. The invention was a cardboard circle with 2 holes on opposite sides and an image drawn on either side of the disc. Strings are threaded through the two holes on left and right ends. You twirl the string with your fingers, then when you let go, it spins rapidly and makes a single image between the two sides (positive after-images).
3. Faraday’s Wheel (1824/1830)
a. First described by Peter Mark Roget in the 1824 article, Explanation of an optical deception in the appearance of the spokes of a wheel when seen through vertical aperatures.
b. The invention was 2 cogs/gears with gaps at regular intervals (similar to a bicycle tire) turn in opposing directions at the same speed. If you looked past the first spinning part to the farthest one, it appeared to not be moving. A static image was on the second gear, which was seen without any blur.
Check out my website’s link for images of these innovations in animation and for more thorough show notes:
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Animated Cartoons- How They Are Made Their Origin and Development by E.G. Lutz
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The intro and outro, along with the transition music, of this podcast are public domain songs obtained from freemusicarchive.org.
Intro– The Royal Vagabond by Jockers Dance Orchestra
Outro– Hello Central, Give Me Heaven by Byron Harlan
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