E=mc^2.

"Do not worry about your difficulties in Mathematics. I can assure you mine are still greater."

- Albert Einstein

The theory everyone wants to know.

I take it all of you, literally everyone of you has heard of said equation? 

E=mc^2.

Here's some basic info on the equation itself, E=mc^2 is short for ‘Energy = Mass x The Speed of Light in a vacuum squared.’ I bet you are wondering "Why c? Why not s?" The letter c is the start of the Latin word Celeritas which means speed, or swiftness. The theory basically states that mass and energy are equivalent. Mass is energy and vice versa. 

"Why do we use it though?" The theory is actually used every single say, physicists use it all the time and it's used to calculate the energy produced from single atoms and so on...

I don't know how much you weigh and more than one person will read this (hopefully) so lets say, for this demonstration of E=mc^2, you weigh 50kg. If we reverse the equation so we can use it, we get mc^2=E, so since your mass is 50kg, and the speed of light is 299,792,458m/s.

E = 50 * 299,792,458^2, so...

E = 50 * 8.98755179 x 10^16, so according to this, if we annihilated (or smashed anti-matter into every atom in your body) the energy produced would be...

4.4937759 × 10^18 Joules!

A enormous amount, but we'd have to completely destroy you! 

... sorry!

Now for another demonstration, an atom - hydrogen to be precise.

mc^2=E.

E = 1.660 538 782 x 10^-27(kg) * 299,792,458^2, so... 

E= 1.4967759278302190832171448 x 10^-10!

Not as much as before, but our previous equation would have involved trillions of atoms! Millions of hydrogen atoms are smashed together in the Suns core to create helium! The energy produced is enormous!

To conclude, now you know how to use e=mc^2! Try doing an example of your own! Like 100kg, 1kg, 500g and even 0.0001grams! 

Thanks for reading, Ben.