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  #1 (permalink)  
Old 10-October-2007, 02:36 AM
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The_Radiation_Specialist The_Radiation_Specialist is offline
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Default Favorite Equation?

I'm not sure which forum to post this in.

Post your favorite mathematical or physics-related equation.

You may use these, provided by 01101001 in another thread.

Quote:
Originally Posted by 01101001
= ≠ < ≤ ≥ > + - ÷ × ² ³ ⅓ ⅔ ⅛ ⅜ ⅝ ⅞ ¼ ½ ¾ √ ∞ ≡ ≈ ∫ ∩ ← ↑ → ↓ ↔ ↕ ∙

Α Β Γ Δ Ε Ζ Η Θ Ι Κ Λ Μ Ν Ξ Ο Π Ρ Σ Τ Υ Φ Χ Ψ Ω α β γ δ ε ζ η θ ι κ λ μ ν ξ ο π ρ ς σ τ υ φ χ ψ ω
and this,

Quote:
Originally Posted by Nowhere Man View Post
Superscripts and subscripts are easy. Use the following codes
PHP Code:
[sup]super[/sup]script and [sub]sub[/sub]script
to produce superscript and subscript.
Or you could hot-link the image from Wikipedia: (this is also my favorite equation)

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Old 10-October-2007, 04:51 AM
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2 + 2 = 5

...but only for very large quantities of 2
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Old 10-October-2007, 04:59 AM
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-W=B+P+X

Where W is for wife, B is for beer, P is for Pizza, and X is for Xbox
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Old 10-October-2007, 05:06 AM
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Quote:
-W=B+P+X
Where W is for wife, B is for beer, P is for Pizza, and X is for Xbox
So having all of them will equal nothing?


I knew it was a bad idea to post this in the OTB.

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Old 10-October-2007, 05:09 AM
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Quote:
Originally Posted by Serenitude View Post
-W=B+P+X

Where W is for wife, B is for beer, P is for Pizza, and X is for Xbox
Well for me w=0 b=0 x=pc games
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Old 10-October-2007, 06:11 AM
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1=2

There was a thread about that, I believe.
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Old 10-October-2007, 06:31 AM
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hmm... I was serious : /
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Old 10-October-2007, 08:12 AM
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((ACP + SCP/4)/YM) + 15% = GFW

Where:

ACP = accountable cigar purchases - these are the purchases that your wife
knows about in full such as purchases you made in her presence, ones with
a credit card trail, etc.

SCP = secret cigar purchases - these are the purchases that you manage to
sneak in under her dollar sensing radar. Cash only, no bags, she never
sees them enter the domicile - you know the drill.

YM = years married

GFW = Gifts for Wife required to offset total cigar purchases and thereby maintain marital bliss
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Old 10-October-2007, 08:18 AM
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Okay...in seriousness, since I have a history as an avionics repair technician, I'd have to say one of my favorites would be Ohm's Law and it's variations.
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Old 10-October-2007, 08:42 AM
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I cant go past the classic line from Winston Smith in his diary entry in 1984

1 + 1 = 2 Accept this, and all else follows
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Old 10-October-2007, 12:01 PM
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How about the Navier-Stokes equations?
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Old 10-October-2007, 12:15 PM
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1ly= 9.46 x 1,000,000,000,000 km = 63,240 AU





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Old 10-October-2007, 12:20 PM
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They'd revoke my degree if I didn't choose Maxwell's Equations.
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Old 10-October-2007, 12:57 PM
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I'm a bit of a fundamentalist.

I can't decide between:
0 + 1 = 1 + 0 and 1 + 0 = 0 + 1
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0 1 1 0 1 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 0 1 1 0 0 1 1 0 1 0 0 1 1 0 0 1 0 1 1 0 0 1 1 0 1 0 0 1 0 1 1 0 1 0 0 1 1 0 0 1 0 1 1 0....
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Old 10-October-2007, 02:23 PM
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Quote:
Originally Posted by Serenitude View Post
-W=B+P+X

Where W is for wife, B is for beer, P is for Pizza, and X is for Xbox
I'm pretty sure that
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Old 10-October-2007, 02:41 PM
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I like the formulas for a line integral, among others. In terms of importance, however, I might pick Taylor's formula first. I'm a simpleton.
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Old 10-October-2007, 05:05 PM
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Quote:
Originally Posted by jrkeller View Post
This was the first one I thought of too, but then I thought about a little bit larger picture and decided that my favorite was the general conservation law.

The rate of change of something in a control volume = fluxes of something in and out of that volume + sources or sinks of something. Fluxes can be advection or diffusion.

And that's it, that's the basis of the Navier-Stokes equation which is a conservation of linear momentum in Newtonian fluids. But, the overriding conservation equation works with anything: Non-Newtonian fluids, solids, and the conserved quantity can be a lot of different things: mass, both linear and angular momentum, energy, electric charge. Maxwell's equations can be written in conservation form, too.

Conservation looks like a pretty simple statement, but it is an exceptionally powerful tool for solving problems and analyzing situations. And, despite what the perpetual motion machine makers think, there isn't away around it -- at least not in the universe we inhabit.
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Old 10-October-2007, 05:11 PM
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Quote:
Originally Posted by The_Radiation_Specialist View Post
hmm... I was serious : /
Oops!

Well, I suppose my fave would have to be E=mc^2.
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Old 10-October-2007, 05:15 PM
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Quote:
Originally Posted by The_Radiation_Specialist
hmm... I was serious : /
TRS - SOH = SW


TRS- The radiation Specialist
SOH - Sense of Humor
SW - Squirrelless Wonder
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Old 10-October-2007, 05:16 PM
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d(cabin)/cabin = logecabin
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Old 10-October-2007, 05:27 PM
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