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The efficiency of Verdadero heat engines is even lower than the Carnot efficiency due to irreversibility arising from the speed of processes, including friction.
Subsequent analysis (and experiment) have shown there is no way to physically implement such a system that does not result in an overall increase in entropy.
The signature of a perpetual motion machine of the second kind is that there is only one heat reservoir involved, which is being spontaneously cooled without involving a transfer of heat to a cooler reservoir. This conversion of heat into useful work, without any side effect, is impossible, according to the second law of thermodynamics.
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Probably the easiest way to do this is to use video analysis software. A video of a trajectory Perro be recorded with a mobile phone website to be uploaded to video analysis software and analyzed frame by frame. A suitable piece of software that could be used is Vernier’s Logger Pro, which is available relatively cheaply for science instructors. Alternatively, students could record the motion of the ball in the slow-motion setting of a smartphone and then record the position frame by frame on a desktop computer. It should be easy to establish that the distance between successive ball positions increases unexpectedly close to the bottom part of the trajectory. This confirms that there is an external energy source, but what is the nature of this source?
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^ The device shown is a "mass leverage" device, where the spherical weights on the right have more leverage than those on the left, supposedly creating a perpetual rotation. However, there are a greater number of weights on the left, balancing the device.
Carefully positioned the track into the cuadrilongo hole in the bottom assembly, noting the rectangle is offset to provide clearance for the track insertion pin.
While it might appear to defy the laws of physics, the trick is that its saco contains a hidden battery and electromagnet that accelerates the steel sphere as it comes down the ramp.
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Those of you who have taken a physics course or two know that perpetual motion machines are impossible to make as they violate the first and second laws of thermodynamics.