Perpetual Motion: The History of an Obsession |
From inside the book
Results 1-3 of 17
Page 77
... pendulum . Some of these were electro - magnetic devices , but all relied on the swing of the pendulum to turn the wheel incrementally with a form of ratchet escapement , with the wheel providing sufficient energy to keep its pendulum ...
... pendulum . Some of these were electro - magnetic devices , but all relied on the swing of the pendulum to turn the wheel incrementally with a form of ratchet escapement , with the wheel providing sufficient energy to keep its pendulum ...
Page 78
... pendulum but , unlike the familiar pendulum of a clock , this one was not being used to regulate power , but to provide it . Because the swinging bar bearing the weights A and A appears to have two pivot points , so as to impart some ...
... pendulum but , unlike the familiar pendulum of a clock , this one was not being used to regulate power , but to provide it . Because the swinging bar bearing the weights A and A appears to have two pivot points , so as to impart some ...
Page 124
... pendulum con- sisting of a heavy metal disc supported by a slender steel ribbon . Its period is seven - and - a - half seconds , equivalent to that of a swinging pendulum 187 feet in length . Thomas Bedwell , the English mathematician ...
... pendulum con- sisting of a heavy metal disc supported by a slender steel ribbon . Its period is seven - and - a - half seconds , equivalent to that of a swinging pendulum 187 feet in length . Thomas Bedwell , the English mathematician ...
Contents
Introduction | 15 |
What is Perpetual Motion? | 19 |
Elementary Physics and Perpetual Motion | 27 |
Copyright | |
18 other sections not shown
Other editions - View all
Common terms and phrases
ammonia appeared Archimedean screw atoms Bishop Wilkins Böckler boiler bottom buckets centre century chain claims clock clockwork Coleman Sellers conservation of energy continue Cox's crank demonstrated descending described device discovered discovery discs driving dry pile electricity engine exhibition experiment flywheel force Franklin Institute friction fuel Garabed Giragossian glass gravity heat hollow impossible inclined plane invention inventor Keely's lamp Law of thermodynamics levers liquid lodestone magnets means mechanism mercury move Museum natural once operation Orffyreus Patent Office pendulum perpetual motion machine perpetual motion seekers perpetual motionists Perpetuum Mobile petual motion Philadelphia philosopher physicist piece possible pressure principle probably produced Professor published pulley pump radium reactor Redheffer Rolling Ball Clock rotation scheme Second Law self-moving wheel shaft side steam Stevinus strange temperature thing thought tion tube turn uranium 235 uranium 238 valve waterwheel weights winding Zimara