E=MC2

Okay, alright. E=MC2 is some insanely genius equation, right? No one other than Einstein has a worthy mind for such crazy colossal calculations, right?

WRONG!

Here it is in a nutshell: (sort of)
E=MC2 is an equation that proves a relationship between an object's mass (weight) and energy. The more it weighs, the more potential energy it has. For instance, the common occurance of riding a bicycle exemplifies this. As you ride up the hill, you seem to get "heavier" due to the increase in apparent gravity; the gravity pulling down is "increased" by the opposite force of your inclination. In other words, you go up, gravity goes down, and because of this, the force inbetween (gravity times work exerted by the bicyclist) increases. Therefore, your weight seems to increase and, as a result, you have more potential energy.

What? You still don't get it? Well, let me explain for one moment about energy.

There are two basic energies: kinetic and potential. In basic terms, you possess potential energy when you go up the hill, and you exert kinetic energy when you go down it. What does this mean? The difference is that the energy isn't released when you go up or when you are stationary. It is merely stored until the next decline, when it is exerted in the form of kinetic energy. This form of energy is called potential energy because it hasn't "happened" yet.

The weight of an object is directly related to its energy. For example, imagine a 90 pound person riding the bike down the hill. Once the hill levels out, they won't coast for long. However, a 180 pound person would coast for a lot longer on the same decline. This is because the heavier person has more potential energy when riding up, and therefore more kinetic energy when going down.

But what about things with no mass? What about electricity?

That's where the 'C' in the equation comes in. It stands for the speed of light. The equation proves that pure energy, such as light or electricity, travels at the speed of light ALWAYS, no matter what. For instance, if you leaned out of a car window while going at 60 mph and pointed a flashlight forward, the light would travel at the same speed as if you were stationary when you shone it. Both situations are the same. The light travels at the speed of light (duh) both times. ALWAYS. But, perform the same experiment with a baseball, and you will find that the baseball travels faster when thrown from a car then it does when thrown from a balcony.

So there it is. But if you want the real nutshell, you might as well take the title of this post because, ultimately, that says everything I just did in 5 characters.