What can I say. It's a cool number. I have it memorized to 74 digits. No, this isn't a symptom of too much free time (although this whole site is), it's a sign of a mistake made by my math teacher: she doesn't have the most exciting class, a nd she put up one of those pi posters above the whiteboard. So I can stare off into space, memorizing pi, while it looks like I'm paying attention.
So if I ever need to calculate the circumference of the universe to the diameter of a hydrogen atom, I'll be set. Well, I'd only need 39 digits to do that (thanks, Mr. Stephens).
These have got to be two of the neatest equations that I've ever seen. Please don't ask me to prove them. Just accept them as the truth.
ei·pi = -1
I don't know if this one really has any signifigance, but it unites three abstract numbers, e, pi and i, to form something tangible.
I know (er, knew) the proof for this. Something involving an infinite series. I'll post it when I find it again.
1
(Eo·µo)½ = c
This equation proves that light is made up of both electric and magnetic energy.
Eo is the permittivity of a vacuum, often used in electrical equations.
µo is the permeability of a vacuum, often used in magnetic equations.