![]() ![]() An example is that of a solar cell where radiant energy is converted to electric energy, which is associated with considerable loss in some energy. The conversion of the energy from one source to another is associated with different losses, the can either be high or low. Energy exists in different forms and not every form can be transferred into another at will. Thus Principle of conservation of energy, where pristine energy from the sun is still there, albeit in another form. An example is solar cells that do not create or consume the energy from the sun, but rather convert radiant energy to electric energy, which can later be converted to any form of energy in lighting or heating. As such, it cannot be created, consumed or destroyed, it can just be transferred or converted from one form into another. ![]() The measure of energy is the ability to perform work. The concept of energy is used to describe changes in the state of a body or system. ![]()
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