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Blackadder
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For my first thread allow me to answer a question posed by 'Artie' who requested the the following,
Unfortunately the thread was locked so I had to start a new thread just to answer this question.
(Quote Artie:)In the equation E=mc2
E is energy
m is mass
What is c? I know that c is the speed of light, but why use the letter c? What does c stand for? (Unquote)
The first use of the letter c as a symbol for the speed of light was in a 1856 paper by Wilhelm Eduard Weber and Rudolf Kohlrausch. Weber used the notation to stand for constant, and it later become known as Weber's constant.
Lower case 'c' stood for celeritas as was stated previously but the Latin celeritas actually means 'swift'. Plank, Lorentz, and ultimately Einstein used the letter 'c' and in Eistein's case, his theory of relativity demanded the speed of light in a vacuum be 'constant' thereby finessing a double entendre to the symbol.
The first quantitative estimate of the speed of light was made in 1676 by Ole Christensen Romer whose estimate of approximately 136,000 miles per second based on astronomical observations of the moons of Jupiter was in the ballpark but about 26% too low. Although for a first shot it was magnificent.
It took me some time to find this Forum and I have some interesting questions on the Big Bang and the origin of the universe and my own hypothesis on the 'Intelligent design imbroglio'.
Looking forward to exchanging ideas and some good debates.
The Blackadder
Unfortunately the thread was locked so I had to start a new thread just to answer this question.
(Quote Artie:)In the equation E=mc2
E is energy
m is mass
What is c? I know that c is the speed of light, but why use the letter c? What does c stand for? (Unquote)
The first use of the letter c as a symbol for the speed of light was in a 1856 paper by Wilhelm Eduard Weber and Rudolf Kohlrausch. Weber used the notation to stand for constant, and it later become known as Weber's constant.
Lower case 'c' stood for celeritas as was stated previously but the Latin celeritas actually means 'swift'. Plank, Lorentz, and ultimately Einstein used the letter 'c' and in Eistein's case, his theory of relativity demanded the speed of light in a vacuum be 'constant' thereby finessing a double entendre to the symbol.
The first quantitative estimate of the speed of light was made in 1676 by Ole Christensen Romer whose estimate of approximately 136,000 miles per second based on astronomical observations of the moons of Jupiter was in the ballpark but about 26% too low. Although for a first shot it was magnificent.
It took me some time to find this Forum and I have some interesting questions on the Big Bang and the origin of the universe and my own hypothesis on the 'Intelligent design imbroglio'.
Looking forward to exchanging ideas and some good debates.
The Blackadder
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