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What is your favourite equation? (From any subject)

I knew if I asked this to my friends they would disown me so I thought I would ask it here! What is your favourite equation(s)?

It can be from absolutely anything; maths, physics, chemistry, biology etc...

Personally my favourite at the moment is the Dirac equation. I don't understand it but from what I've read, it predicted the existance of the anit-electron and describes every electron in the universe! Pretty cool :cool:

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Reply 1

misterb123

wikipedia search - the black scholes equation.... I'm about to start trying to prove this and see if it works lol :P

Reply 2

ASaunders

The Schrodinger equation!

inb4

N=(m/M)Na

Helped me so much with questions regarding masses and atoms, we never got given it in physics too.

Reply 5

cyniex

I'm not even sure if this counts as a equation, but I love English so I would say the PEE rule (Point, Evidence, Explain). Yo cant go wrong with it

Reply 6

kingkhan

Original post by misterb123

wikipedia search - the black scholes equation.... I'm about to start trying to prove this and see if it works lol :P

my fav. eq. :smile:

Reply 7

misterb123

Original post by kingkhan

my fav. eq. :smile:

Haha you can help me out when I get stuck, When I start it at some point tommorow :biggrin:

Reply 8

LeeC

The Navier-Stokes Equations.

'Waves follow our boat as we meander across the lake, and turbulent air currents follow our flight in a modern jet. Mathematicians and physicists believe that an explanation for and the prediction of both the breeze and the turbulence can be found through an understanding of solutions to the Navier-Stokes equations. Although these equations were written down in the 19th Century, our understanding of them remains minimal. The challenge is to make substantial progress toward a mathematical theory which will unlock the secrets hidden in the Navier-Stokes equations. '

From http://www.claymath.org/millennium/Navier-Stokes_Equations/

(edited 12 years ago)

Reply 9

linkdapink

s = ut + 1/2 at^2

I just think it sounds so nice... like a poem.

Reply 10

gozatron

Any of the Maxwell equations.

Reply 11

As_Dust_Dances_

(y=mx+c) I remember the torture of drawing line graphs...

Reply 12

nmudz_009

speed=distance/time. No tricky business -any question involving this is intuitively solveable :biggrin:

a^2 + b^2 = c^2

:h:

I really like Heisenberg's Uncertainty Principle equation. Not just aesthetically but for what it represents. It completely destroys the belief that we can know everything.

Now to attempt to use Latex after so long...