July 28, 2010

first law of thermodynamics

The first law of thermodynamics is often called the Law of Conservation of Energy
First Law of Thermodynamics states that energy can neither be created nor be destroyed. The amount of energy in the universe is constant – energy can be changed, moved, controlled, stored, or dissipated. However, this energy cannot be created from nothing or reduced to nothing.
energy can be transferred from one system to another in many forms.


Change in internal energy equals the difference of heat transfer into the system and the work done by the system

First Law of Thermodynamics acts is the perpetual motion machine. No one has ever built a machine that can continue to move forever without any external energy source keeping it moving. Every machine requires some input to continue moving

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