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Back about 1934 or 35, at my older brother's graduation from MIT, Vannevar Bush had
a display of the stroboscope, which could produce extremely frequent very powerful
flashes, the ratie of which could be changed to show and airplane propeller apparently
slowing down and stopping, so that any cracks started to develop in propeller could
be seen. Having seen this, when I see in movies on TV the wheels appearing to be
going backwards when the car is going forward, I think of it as a stroboscopic effect
I don't know what an engineer would call it.
Here is a URL that seems to agree with me:
http://mmd.foxtail.com/Archives/Digests/199911/1999.11.30.05.html
Moderated by Jackie
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