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The impossibility of a perpetual motion machine also implies that the speed of light cannot forever be constant.
Since both types of perpetual motion machine are flawed in both theory and in practice, they are clearly [[pseudoscience]]. Despite this, websites have professed to offer "free energy" devices for sale.<ref>http://www.free-energy-info.co.uk/</ref><ref>http://www.fuellesspower.com/</ref><ref>http://www.magniwork.com/</ref>
Since both types of perpetual motion machine are flawed in both theory and in practice, they are clearly [[pseudoscience]]. Despite this, websites have professed to offer "free energy" devices for sale.<ref>http://www.free-energy-info.co.uk/</ref><ref>http://www.fuellesspower.com/</ref><ref>http://www.magniwork.com/</ref>
The rejection of the possibility of a perpetual motion machine requires recognition that the Earth itself is not in perpetual motion, and that its instability is increasing, which is one of the many [[Counterexamples to an Old Earth]].
The rejection of the possibility of a perpetual motion machine requires recognition that the Earth itself is not in perpetual motion, and that its instability is increasing, which is one of the many [[Counterexamples to an Old Earth]]. The impossibility of a perpetual motion machine also implies that the speed of light cannot forever be constant.
==References==
==References==
<references/>
<references/>
[[Category:Physics]]
[[Category:Physics]]