23. Perpetual Motion
Transfer
of air
It is an
end-less rubber tube, with projections, on which are fastened thin
rubber bags, and a small weight attached to each bag. The bags are
filled with air when the weight hangs down, and when it comes on top it
presses the air out and through the hollow projection and tube into the
next bag that comes in position.
When placed
over two wheels in water, the bags filled with air should
be lighter and rise, while the other side, with the air forced out,
should sink. Each bag, as it comes into position at the bottom of the
left tube,
will be filled with air expelled from a bag at the top. The weights
will descend a certain amount, one in expanding and the other in
contracting the bag.
(Subsection 946, from
p.379)
From: Gardner D. Hiscox, M.E., Mechanical Appliances and Novelties of Construction (1927), Norman W. Henley Publ. Co.
Nature bears long with those who wrong her. She is patient under abuse. But when abuse has gone too far, when the time of reckoning finally comes, she is equally slow to be appeased and to turn away her wrath. (1882) --
Nathaniel Egleston, who was writing then about deforestation, but speaks equally well about the danger of climate change today.
Carl Sagan: In science it often happens that scientists say, 'You know that's a really good argument; my position is mistaken,' and then they would actually change their minds and you never hear that old view from them again. They really do it. It doesn't happen as often as it should, because scientists are human and change is sometimes painful. But it happens every day. I cannot recall the last time something like that happened in politics or religion. (1987) ...
(more by Sagan) Albert Einstein: I used to wonder how it comes about that the electron is negative. Negative-positive—these are perfectly symmetric in physics. There is no reason whatever to prefer one to the other. Then why is the electron negative? I thought about this for a long time and at last all I could think was “It won the fight!” ...
(more by Einstein) Richard Feynman: It is the facts that matter, not the proofs. Physics can progress without the proofs, but we can't go on without the facts ... if the facts are right, then the proofs are a matter of playing around with the algebra correctly. ...
(more by Feynman)
