Sorry but I don't Know .

[zabado]

E = MC2....
If E = Energy
& M = Mass
What's C
( give an old man a break )
With no sarcasm thanksyou.

[Jumbuck]

c = the speed of light (honest!)

[zabado]

Thanks Jumbuck I really didn't know .

[mollykins]

c stands for constant which in different contexts stands for different things but yes in this case is speed of light.

[Clanad]

While not engaging in controversy, actually, "c" stands solely for the speed of light and is derived from from "Celeritas", which is the Latin word for speed. Apparently Einstein initially used the upper case "V" to denote the speed of light (which, by the way is c = 3 × 10^8 m/s), but early on switched to "c"... You can read the long an short of it here:
http://math.ucr.edu/home/baez/physics/Relativity/SpeedOfLight/c.html

[kujawski]

no c standsfor cucumber, actually, so the whole e=mc^2

means

eggs=Mash * cucumbers (squared)
which in fact is a green bean

[mollykins]

Oh my science teacher was wrong then . . . his english isn't very good mind.

[mibn2cweus]

No sarcasm? Well, I never! . . . http://www.judiciaryreport.com/images/albert-einstein.jpg . . . ~o">

[mibn2cweus]

Mibn! What are you up to now?

http://www.heatedmouse.info/uploaded_images/0-T2KSe7I7-mouse-computer-s--776068.png

Oops, Oh dear.

Mibn, go to your cage. How many times have I told you, no posting without supervision. You're going to get us both banned!

Sorry folks.

[north star]

speed of light 'in a vacuum' is 2.997925 x 10 power 8 m/s