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theory is just that
Theory
THE'ORY, n. [L. theoria; Gr. to see or contemplate.]
1. Speculation; a doctrine or scheme of things, which terminates in speculation or contemplation, without a view to practice. It is here taken in an unfavorable sense, as implying something visionary.
Hi Kenny,
That is not necessarily so, all good scientific discovery has to have a workable theory. The theory of Relativity for example is now known as a law of relativity, time dilation was a theory until it could be proven in fact. Sorry but many dictionaries are as out of date as the flat earthers are today.
From yahoo answers:
http://answers.yahoo.com/question/index?qid=20060607111255AAFgg7gwhat does e=mc2 stand for?
The energy contained with in an object of mass "m" is equal to that mass times the speed of light, squared.
Or Energy = mass X speed of light X speed of light
Einstein surprised the scientific world with this equation showing the equivalence of mass and energy. Because the speed of light is such a large number (299 792 458 m / s), much larger when it is squared (8.98755179 × 10^16 m^2/s^2), a very small amount of mass can yield a huge amount of energy. This is why nuclear reactions are so efficient - just a small amount of fissile material can power a city (or blow it up).
It wasn't until 37 years after Einstein first published this equation that it was shown experimentally. On December 2, 1942, man first initiated a self-sustaining nuclear chain reaction, and controlled it.
In 2005, the centennial of Einstein’s great year, a team made the most accurate test yet of his equation. They measured the tiny change in mass of radioactive atoms before and after the atoms emitted gamma-rays. And they measured the energy of the rays. The missing mass times c² equalled the energy of the rays to within 4 hundred-thousandths of one percent.)
Source(s):
Einstein's voice explaining this himself:
http://www.aip.org/history/einstein/voic...
The first nuclear reaction:
http://hep.uchicago.edu/cp1.html3 years ago
george.