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

1. May 25, 2010

### filegraphy

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

2. May 25, 2010

### starthaus

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.

3. May 25, 2010

### filegraphy

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