Machines that can do work forever without consuming energy violate the law of conservation of energy, so they are called "perpetual motion machines of the first kind". In the absence of temperature difference, a machine that constantly absorbs heat from sea water or air in nature and converts it into mechanical energy violates the second law of thermodynamics, so it is called "the second kind of perpetual motion machine".
These two types of perpetual motion machines are concepts that violate the current objective scientific laws and have not yet been manufactured.
When energy changes from one form to another, 100% is absolutely impossible to change into this form. Such as heat energy generated by friction between substances.
1775, the French Academy of Sciences passed a resolution declaring that perpetual motion machines would never be accepted. At present, the United States Patent and Trademark Office prohibits the granting of patent certificates to applications for perpetual motion machines.
Chinese name: perpetual motion machine
perpetual motion machine