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J. Perelman
"Entertaining physics". Book 1.
Chapter 5. Properties of liquids and gases

IMAGINARY PERPETUUM MOBILE

In the books sometimes described as this “eternal” engine device such device: the oil (or water)is poured in the vessel rises wicks, first in the upper vessel, and from there other fuses is even higher; the upper vessel has a gutter to drain oil, which impinges on the blades of the wheel, causing it to rotate. Sakshee down oil rises again on the wicks to the top of the vessel. Thus, the stream of oil flowing along the groove on the wheel, not for a moment interrupted, and the wheel forever must be in motion...


Impossible turntable.

If the authors describing the turntable, gave trouble to make, of course, they would have found that not only the wheel does not spin, but that no drop of liquid even misses in the upper bowl!

It is possible to ascertain, however, and not getting to the manufacture of turntables. In fact, why the inventor thinks that the oil must flow downward from the upper, curved portion of the wick? Capillary attraction, overcoming gravity, raised the liquid up the wick; but the same causes will keep the liquid in the pores of the wet wick, not allowing it to drip from it. If we assume that in the upper vessel of our imaginary turntables from the action of capillary forces may be liquid, it must be admitted that the same fuses that seem to have brought her here, but they moved it back to the bottom.

This imaginary perpetual motion is reminiscent of another water machine “eternal” movement, invented in 1575 Italian mechanic Strada Senior. We describe here this fun project.


Ancient water project “eternal” engine for grinding stone.

Archimedes screw rotates, raises the water in the upper tank, from where it follows from the tray jet, striking in blade loading wheel (bottom right). The water wheel rotates the grinding machine, and simultaneously moves through a series of gear wheels, the Archimedes screw, which raises the water in the upper tank. The screw rotates the wheel, and the wheel - screw!.. If it were possible such mechanisms, it would be easiest to make so: to throw the rope through the block and bind to its ends, equal weights: when one load down, he lifted would thus other cargo, and that, falling from this height, was up first. What is not a Perpetuum mobile?

Entertaining physics J. Perelman

 




System Orphus

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