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Re: The speed of light is NOT a constant?! A milestone in Physics?
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Originally Posted by KenWittlief
The established SI units were more or less arbitrary. A second is proportioal to the rotation of the earth on its axis - a meter is about the distance from someones nose to their fingertip, a kilogram is about one cubic centimeter of something or other.... so how did those arbitrary units come out perfect for nuclear energy?
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Too much confusion - ouch it's hurting my brain. Well be careful, the meter is based off of how far light travels in 1/299792458 of a second, and a kg turns out to be defined by how much of a gravitational interaction exist between the earth and said mass. So it all boils down to defining units based on time and space measurements which is what E=mc2 is really all about. And the E is not just for nuclear energy! It describes any energy!! Its just in nuclear reactions the quantities of energy are more and thus measurable. I have more mass when I'm at the top of a roller coaster than at the bottom. Unfortunately it is not a measureable amount. E=mc2 is a mass energy equivalence for any type of energy!
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Last edited by Doug G : 16-07-2006 at 15:50.
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