![]() ![]() ![]() Machines that can move and work without any means of energy even though it can put out energy. The three that it gives us are: “Any device that continues its motion forever, without any speed reduction (The literal interpretation) Any device whose operation would violate established laws of physics, or would depends upon purely speculative laws unknown to physics A machine that perpetually puts out more energy than it takes in” (Simanek). What does this have to do with perpetual motion machines though? And what are these machines exactly? It has several definitions according to “The Museum of Unworkable Devices” website. These are important to know for understanding why perpetual motion machins can’t exist. This means that a perfectly efficient heat engine cannot be created” (Jones). Third – It is impossible to reduce any system to absolute zero in a finite series of operation. There are four laws that help guide these processes: “Zeroeth – Two systems each in thermal equilibrium with a third system are in thermal equilibrium to each other First – The change in the energy of a system is the amount of energy added to the system minus the enerfy spent doing work Second – It is impossible for a process to have as its sole result the transfer of heat from a cooler body to a hotter one. These have to do with changes in pressure, internal energy like temperature, and volume. In basic concept, the thermodynamic process has special properties alongside it like: “Adiabatic process – a process with no heat transfer Isochoric process – no change in volume in which case the system does no work Isobaric process – a process with no change in pressure Isothermal process – no change in temperature” (Jones). Thermodynamics “focuses largely on how a heat transfer is related to various energy changes within a physical system undergoing a thermodynamic process,” usually guided by the laws of the field (Jones). ![]() Physics has a field in what is called “thermodynamics.” The field focuses on heat transfers between properties such as density, temperature, and pressure. Thermodynamics is a field in physics that we will focus on today as well as the basic understanding of what perpetual motion machines are and the why and how they can’t exist. Physics is the type of science that deals with the laws of nature. ![]()
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