UCSB Science Line
Sponge Spicules Nerve Cells Galaxy Abalone Shell Nickel Succinate X-ray Lens Lupine
UCSB Science Line
Home
How it Works
Ask a Question
Search Topics
Webcasts
Our Scientists
Science Links
Contact Information
What does the equations E=mc2 mean? I am pretty sure it has something to do with the light's speeds but I am not sures. Thank you. Davvid Lavivne
Answer 1:

The equation E = m c2 is perhaps the most well-known equations in physics, and was deduced by Albert Einstein in 1905. E represents energy, m represents mass, and c is the speed of light (a very large number!). The general idea of the equation is that mass can be converted into light, and light can be converted in to mass. The equation tells how much light or mass would result from such a conversion.

The sun is an excellent example of the conversion of mass to energy. As atoms in the sun undergo fusion, a very small amount of the mass of those atoms is converted to the sunlight we see every day. Einstein's equation can tell us exactly how much light is produced if we know how much mass has "disappeared" in such a reaction.



Click Here to return to the search form.

University of California, Santa Barbara Materials Research Laboratory National Science Foundation
This program is co-sponsored by the National Science Foundation and UCSB School-University Partnerships
Copyright © 2015 The Regents of the University of California,
All Rights Reserved.
UCSB Terms of Use