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Posted by CR on July 24, 1997 14:37:30 UTC
: I have been hearing alot of being able to travel the light of speed if we were pure energy. But the only problem is that, we really don't know what energy is. I have done some hardcore searching for a good definition of energy. We know that energy cannot be created nor destroyed, only changed in form, but there was a man who created a generator in which the total output energy was far greater than the total input energy. But my question is what is energy? I don't want to know about the properties of energy or laws of energy, I just want to know what exactly makes up energy.
Ah... Well, energy is not a tangible (physical) thing, it is a concept and was (and still is, but to a lesse degree) used by physicists as a unit in their formulae which was required to make them balance. This was necessary because matter (the stuff that the Universe is made of) cannot be created or destroyed, it can only interact with other matter to form other particles, etc. As the physicists discovered more particles, they were able to fill some of the gaps in the formulae which were previously called energy. The word energy is still used widely today, because it is often quicker to say something lost of gained energy, than to say that as a result of many particle interactions, the average amount of vibrations or average speed of some of those particles were reduced or increased. By the way, good question.
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