E = mc2

An equation derived by the twentieth-century physicist Albert Einstein, in which E represents units of energy, m represents units of mass, and c2 is the speed of light squared, or multiplied by itself. (See relativity.)

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Visualize yourself passing this quiz on words from Jacqueline Woodson’s exquisite verse novel “Brown Girl Dreaming,” and then take the quiz to prove you can do it! (Because you can.)
Question 1 of 10
What does “barren” mean?
a cylindrical wooden container with slightly bulging sides.
Worn down by dullness, tedious repetition.
unproductive; unfruitful
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notes for E = mc2

Because the speed of light is a very large number and is multiplied by itself, this equation points out how a small amount of matter can release a huge amount of energy, as in a nuclear reaction.

Words nearby E = mc2

dziggetai, dzo, Dzongka, Dzungaria, e, E = mc2, Ea, E.A.A., each, each and every one, each other
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.