50. Laws of Thermodynamics

A spinner rolls indefinitely up and down a double ramp. Is this perpetual motion in violation of the First Law?

A Hilsch tube device connected to the room air source separates the air stream into hot and cold blowing streams. Does this violate the Second Law?

The "Thermobile" runs when dipped into hot water. Is this a heat engine with only one temperature reservoir?

The thermoelectric converter can also be run between ice water and liquid nitrogen demonstrating that there is still plenty of heat energy in ice water.