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| Perpetual motion | |
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 | Perpetual motion describes hypothetical machines that operate or produce useful work indefinitely and, more generally, hypothetical machines that produce more work or energy than they consume, whether they might operate indefinitely or not... more>>> |
Tuesday, January 24, 2012
Perpetual motion
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| October 1920 issue of Popular Science magazine, on perpetual motion. Although considered impossible by scientists, perpetual motion continues to capture the imagination of inventors. The device shown is a "mass leverage" device, where the spherical weights on our right have more leverage than those on the left, supposedly creating a perpetual rotation, but there are a greater number of weights to our left, balancing the device. |
Perpetual motion describes hypothetical machines that operate or produce useful work indefinitely and, more generally, hypothetical machines that produce more work or energy than they consume, whether they might operate indefinitely or not.
Thursday, January 19, 2012
Apple Lisa
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| Apple Lisa, with an Apple ProFile external hard disk sitting atop it. Note the dual 5.25-inch "Twiggy" floppy drives. |
The Lisa project was started at Apple in 1978 and evolved into a project to design a powerful personal computer with a graphical user interface (GUI) that would be targeted toward business customers.
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