Can perpetual machines be made?
117884
Why isn't perpetual motion possible, even though we are so technologically advanced?
57584
Would a generator in vacuum/space provide electricity endlessly?
53043
Checking if Unlimited Cryptography is available
35559
Vibration to Torque: Magic Motor
30883
Why can't energy be created or destroyed?
5317
How does the second law of thermodynamics forbid the possibility of perpetual machine of the second kind?
95295
Is the Universe Past-Eternal?
46420
Infinite Atwood's machine
102298
Can someone use DC generator along with electric motor to make electricity along with mechanical energy?
154295
Total mechanical energy concept
28472
Can an adiabatic, isentropic transformation be irreversible?
58462
Impossibility of time travel due to energy conservation?
105323
Why can't gravitons be created in traditional particle accelerators?
43287
The Spinning Log "Perpetual Motion" problem, and my attempt at a solution
70687
Is the EmDrive, or "Relativity Drive" possible?
57701
Can a clone of a double-sided planeswalker transform?
141144
Electrical Machines based on Electric Fields