What does E=mc^2 mean? How can it be used in an example?

[filegraphy]

I was trying to be more clear on how this equation works. I appreciate any help.

[starthaus]

I was trying to be more clear on how this equation works. I appreciate any help.

A much better expression is :

\Delta E=c^2 \Delta m

The above tells you that even for a very small variation of mass \Delta m one gets a huge variation of energy \Delta E due to the multiplication by the huge number c^2.
As for applications: nuclear power plants.

[filegraphy]

Thanks. I will work with that equation. I appreciate it.