# “Energy equals milk chocolate squared”

Albert Einstein (1879-1955) wrote the famous formula of mass-energy equivalence of “E=mc2” or “energy equals mass times the speed of light (squared).” Chocolate—the chocolate bars are often in squares—gives people energy, and the formula is jocularly given as:

*“Energy equals milk chocolate squared.”*

“Energy = Milk Chocolate Squared” has been cited in print since at least 1997.

Wikipedia: Mass-energy equivalence

In physics, *mass–energy equivalence* is a concept formulated by Albert Einstein that explains the relationship between mass and energy. It states every mass has an energy equivalent and vice versa—expressed using the formula

*E = mc2*

where *E* is the energy of a physical system, *m* is the mass of the system, and *c* is the speed of light in a vacuum (about 3×108 m/s). In words, energy equals mass multiplied by the speed of light squared. Because the speed of light is a very large number in everyday units, the formula implies that any small amount of matter contains a very large amount of energy. Some of this energy may be released as heat and light by chemical or nuclear transformations. This also serves to convert units of mass to units of energy, no matter what system of measurement units used.

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Relativity of Knowledge*Shawn MacIntyre *

1/10/97

(...)

Energy = Milk Chocolate Squared

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Chicken Curry*Spuddie *

1/9/00

(...)

Cheryl

~~~Energy equals milk chocolate squared.~~~

ghen rocks!!

Sunday, December 10, 2006*einstein’s formula*

E=mc2

Formula: “Energy equals milk chocolate squared”

Posted by bea ghen at 12:51 AM

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21st Century Equation*EBiNet Moderator *

7/20/07

E=mc² ...... “Energy equals milk chocolate squared”

Nerd Approved*Einstein Energy Bar is Chocolaty Brain Food*

by SEAN FALLON on JUNE 20, 2008

Apparently, E = mc² actually referrers to energy equals milk chocolate squared.

Twitter

SonaliRanade

@sonaliranade

RT @SwamiFraudAnand: @shaaqT Energy equals milk chocolate squared

7:10 AM - 21 Mar 2010

Twitter

Todun Akinremi

@ToDuN

Formula: “Energy equals milk chocolate squared”

2:06 PM - 8 Apr 2010

Facebook*Te arde que sea Ingenier@. Y soy Muy “Guap@” por Cierto.*

October 17, 2013 ·

E=mc^2

Energy = Milk Chocolate squared

Science Notes

April 13, 2015 *Physics Jokes*

by Todd Helmenstine

(...)

Q: What does E = mc2 mean?

A: Energy = milk chocolate squared.

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Albert Einstein

@AEinsteinPriv

E=mc^2 stands for Energy equals milk chocolate squares

7:32 PM - 22 Feb 2016