# Question: In Einsteins’s famous equation E=mc², what does the “c” stand for?

Answer: Widely considered the most well-known mathematical calculation in the world, E=mc² is the signature discovery of Albert Einstein. His famous formula is known as the special-relativity equation. In the equation, “m” is the mass of an object, “c” is the speed of light, and “E” is energy. Thus, the mass (m) of a body times the speed of light squared (c²) is equal to the kinetic energy (E) of that body. On the most basic level, the equation says that mass and kinetic energy are equal, since the speed of light squared is constant. In other words, mass can be changed into energy, and energy can be changed into mass.

https://themillennialmirror.com/trends/in-einsteinss-famous-equation-emc%c2%b2-what-does-the-c-stand-for/

### BING based on video search results

 1  E = mc² | Einstein’s Relativity http://facebook.com/ScienceReason … Albert Einstein’s Theory of Relativity (Chapter 4): E = mc² (Mass-Energy Equivalence) In physics, mass-energy equivalence is the concept that the mass of a body is a measure of its energy content. In this concept the total internal energy E of a body at rest is equal to the product of its rest mass m and a … [youtube https://www.youtube.com/watch?v=uTO1kxxlkpw?autoplay=1&w=1280&h=720] Watch Video: https://www.youtube.com/watch?v=uTO1kxxlkpw

### Top 10 Results

1In Einsteins’s famous equation E=mc², what does the “c” stand for Speed of light
Step 2 : Answer to the question “In Einsteins’s famous equation E=mc², what does the “c” stand for?” Speed of light: Widely considered the most well-known mathematical calculation in the world, E=mc² is the signature discovery of Albert Einstein. His famous formula is known as the special-relativity equation.
https://www.themillennialmirror.com/2020/10/ans-in-einsteinss-famous-equation-emc.html

2In Einsteins’s famous equation E=mc², what does the “c” stand for Speed of light
Einstein’s equation E=mc² pops up on everything from baseball caps to bumper stickers. It’s even the title of a 2008 Mariah Carey album. But what does Albert Einstein’s famous equation really mean? For starters, the E stands for energy and the m stands for mass, a measurement of the quantity of matter.
https://science.howstuffworks.com/science-vs-myth/everyday-myths/einstein-formula.htm

3In Einsteins’s famous equation E=mc², what does the “c” stand for Speed of light
Speed of light:Widely considered the most well-known mathematical calculation in the world, E=mc² is the signature discovery of physicist Albert Einstein.His famous formula is known as the special-relativity equation. In the equation, “m” is the rest mass of an object, “c” is the speed of light, and “E” is the rest energy.

4In Einsteins’s famous equation E=mc², what does the “c” stand for Speed of light
E = mc 2, equation in German-born physicist Albert Einstein’s theory of special relativity that expresses the fact that mass and energy are the same physical entity and can be changed into each other. In the equation, the increased relativistic mass (m) of a body times the speed of light squared (c 2) is equal to the kinetic energy (E) of that body.. In physical theories prior to that of …
https://www.britannica.com/science/E-mc2-equation

5In Einsteins’s famous equation E=mc², what does the “c” stand for Speed of light
c represents the speed of light. The c comes from the latin word celeritas which means speed or swift. c is approximately 90 billion kilometers 2 per second 2. In the equation, the value of c is “squared” or has the superscript 2 (above the line). That simply means c is multiplied by itself. It can also be represented as c x c or c • c or cc.
http://thinkingmuse.com/emc%C2%B2-famous-equation/

6In Einsteins’s famous equation E=mc², what does the “c” stand for Speed of light
M stands for Mass C2 stands for the speed of Light times the speed of Light. I don’t think there is a new number that equals E. Albert Einsteins famous formula has not been changed, yet.

7In Einsteins’s famous equation E=mc², what does the “c” stand for Speed of light
When you said E=mc 2,what does the c stand for? Asked by: Chris Shepherd Answer In the Einstein’s famous equation: E=mc 2 E stands for the energy of the object in question. m stands for it’s mass, and c stands for the speed of light in vacuum, ( which is: c = 2.99792458 10 8 m/s ) Answered by: Anton Skorucak, M.S. Physics, PhysLink.com Creator

8In Einsteins’s famous equation E=mc², what does the “c” stand for Speed of light
E = MC ^ 2 is perhaps the most famous equation of all time. It stands for E(negery) = Mass times the Speed of Light (C) squared. What this means is that if you take the mass of an object and multiply it by the speed of light (2.9 x 10^8 metres per second) you will then have calculated the ammount of energy.

9In Einsteins’s famous equation E=mc², what does the “c” stand for Speed of light
Bodanis begins with Einstein in the Bern Patent Office in 1905, and then goes back in time to examine each of the elements in Einstein’s equation in turn, starting with energy, followed by the equals sign, then mass, and then the speed of light (where I learned that the “c” is for “celeritas,” from the Latin for “swiftness” and not for centimeters–silly me, I always thought “c” represented …
https://www.theresistanceunited.com/book/show/2802-e-mc-amp-from-srp-true-amp-qid-r6qnuazvtu-amp-rank-17

10In Einsteins’s famous equation E=mc², what does the “c” stand for Speed of light
It stands for “celerity” a word for speed. It is commonly referred to as “the speed of light” because historically that is how it was first measured, but in Einstein’s theory it is more general that that, it is the highest possible speed for any c…
https://www.quora.com/What-does-the-C-stand-for-in-the-formula-of-Einstein-s-theory-of-relativity-What-is-the-explanation-of-it

### Wikipedia Search Results

1.  Speed of light
space and time, and also appears in the famous equation of mass–energy equivalence E = mc2. The speed at which light propagates through transparent materials…
https://en.wikipedia.org/wiki/Speed of light

2.  Special relativity
formula E = m c 2 {displaystyle E=mc^{2}} , where c {displaystyle c} is the speed of light in a vacuum. It also explains how the phenomena of electricity…
https://en.wikipedia.org/wiki/Special relativity

3.  Spacetime
invariant (i.e., identical) in all inertial systems (i.e., non-accelerating frames of reference) The speed of light in a vacuum is the same for all observers…
https://en.wikipedia.org/wiki/Spacetime