In principle a Carnot engine could extract energy from a temperature gradient and then pump it back in again, making it a candidate perpetual motion machine. But even in this most ideal case the ...

The team developed a "demonic engine" – a system that could measure ... of thermodynamics or ushering in the age of quantum perpetual motion machines. Firstly, let's remember that we are still ...

"The perpetual motion machine inventors' view of physics ... its chance to operate water pumps for free, according to The Engines of Our Ingenuity. And Redheffer's 1820 patent was for "machinery ...

The perfect start to the week – watch the reporters at Sky News Australia being gratefully hoodwinked by a rather earnest chap with an old motor and a few magnets. This is yet another take on ...

Magnetic engines and other perpetual motion devices promise endless energy without using fuel. The theory behind the concept is that magnets can keep a motor running eternally because of their ...