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.

and this,

Or you could hot-link the image from Wikipedia: (this is also my favorite equation)

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A slight inclination of the cranium is as adequate as a spasmodic movement of one optic towards an equinine quadruped utterly devoid of any visionary capacity.

2 + 2 = 5

...but only for very large quantities of 2

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Brett
Peters Creek, Alaska
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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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"I have this theory that the Apollo missions were faked when NASA found out that general relativity was wrong because the Earth was expanding due to the Sun's iron core being influenced by magnetic waves from the electric universe after being perturbed by Planet X and thereby causing global warming. Where should I start a thread about this?" ~ ToSeek

"Those are the people that wonder how a thermos knows whether to keep something hot or keep something cold." ~ NeoWatcher

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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A slight inclination of the cranium is as adequate as a spasmodic movement of one optic towards an equinine quadruped utterly devoid of any visionary capacity.

Well for me w=0 b=0 x=pc games

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If it's just us, it seems like an awful waste of space.
Contact Carl Sagan

http://davidsuniverse.wordpress.com/

1=2

There was a thread about that, I believe.

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The dose makes the poison--Paracelsus (1493-1541) http://en.wikipedia.org/wiki/Paracelsus

I don't know. That's why I'm asking--Noclevername

Intelligence may not be clearly defined, but you know stupid when you see it--Noclevername

Science is a way of thinking much more than it is a body of knowledge--Carl Sagan (1934-1996)

hmm... I was serious : /

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A slight inclination of the cranium is as adequate as a spasmodic movement of one optic towards an equinine quadruped utterly devoid of any visionary capacity.

((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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Brett
Peters Creek, Alaska
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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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Brett
Peters Creek, Alaska
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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

How about the Navier-Stokes equations?

1ly= 9.46 x 1,000,000,000,000 km = 63,240 AU





Thats a long walk

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But you're sure the astronauts are lying; you just don't seem to know what they're lying about: Jayutah


I are Learnding.

They'd revoke my degree if I didn't choose Maxwell's Equations.

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I may have many faults, but being wrong ain't one of them. -- Jimmy Hoffa

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 ...

I'm pretty sure that

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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"A witty saying proves nothing" Voltaire.
"All your bias are belong to us" Ara Pacis.

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.

Oops!

Well, I suppose my fave would have to be E=mc^2.

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The dose makes the poison--Paracelsus (1493-1541) http://en.wikipedia.org/wiki/Paracelsus

I don't know. That's why I'm asking--Noclevername

Intelligence may not be clearly defined, but you know stupid when you see it--Noclevername

Science is a way of thinking much more than it is a body of knowledge--Carl Sagan (1934-1996)

TRS - SOH = SW


TRS- The radiation Specialist
SOH - Sense of Humor
SW - Squirrelless Wonder

∫ d(cabin)/cabin = log_ecabin

well, a slightly-nonserious one:

(x-a)(x-b)(x-c)....(x-z) = 0

for all values of x, a, b, ....

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Todd (Bowie, MD, US, North America, Earth, Sol System, Vega region, Local Bubble, Orion arm, Milky Way Galaxy, Local Group, Virgo A Cluster, Virgo supercluster, the universe in which spock is clean shaven)

Quidquid latine dictum sit, altum sonatur.

personal page: http://blog.astrosketches.info

HΨ = eΨ

My wife the theoretical chemist says everything else is just details.


0.999999999999.... = 1


Sorry. I just HAD to.

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If they can get you asking the wrong questions, they don't have to worry about the answers.

Beer Math


1. First of all, pick the number of times a week that you would like to have beer
(more than once but less than 10)









2. Multiply this number by 2 (just to be bold)










3. Add 5












4. Multiply it by 50 -- I'll wait while you get the calculator













5. If you have already had your birthday this year add 1755 ....
If you haven't, add 1754.














6. Now subtract the four digit year that you were born.










You should have a three digit number










The first digit of this was your original number
(i.e., how many times you want to have beer each week).










The next two numbers are









YOUR AGE! (Oh YES, it is!!!!!)

* I meant to give credit for this but lost the link...)

I'm pretty sure you're right

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"I have this theory that the Apollo missions were faked when NASA found out that general relativity was wrong because the Earth was expanding due to the Sun's iron core being influenced by magnetic waves from the electric universe after being perturbed by Planet X and thereby causing global warming. Where should I start a thread about this?" ~ ToSeek

"Those are the people that wonder how a thermos knows whether to keep something hot or keep something cold." ~ NeoWatcher

All equations give me headaches. Except this one. ;-)

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I want to go back to the moon.
I don't care which rocket you use, whichever one you pick, I'll like it, I swear.
"If you think the LHC will create black holes, you might as well believe Hobbits are at the bottom of your garden."- Dr. Mike Inglis
Rovers forever! - ToSeek

Well, since this thread turned into funny equations, I'll play along.

Smart boss + smart employee = profit
Smart boss + dumb employee = production
Dumb boss + smart employee = promotion
Dumb boss + dumb employee = overtime

Smart man + smart woman = romance
Smart man + dumb woman = affair
Dumb man + smart woman = marriage
Dumb man + dumb woman = pregnancy

It's a joke.

ETA: If you have any serious equations, they are welcome too.

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A slight inclination of the cranium is as adequate as a spasmodic movement of one optic towards an equinine quadruped utterly devoid of any visionary capacity.

intelligence varies inversely with level of management.

__________________
If it's just us, it seems like an awful waste of space.
Contact Carl Sagan

http://davidsuniverse.wordpress.com/

That is for 2005. To make it work for 2007 add 1757 or 1756 in the step 5.

ETA: Unless I'm obeying Neverfly's equation.

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A slight inclination of the cranium is as adequate as a spasmodic movement of one optic towards an equinine quadruped utterly devoid of any visionary capacity.

Mine wasn't silly.

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I want to go back to the moon.
I don't care which rocket you use, whichever one you pick, I'll like it, I swear.
"If you think the LHC will create black holes, you might as well believe Hobbits are at the bottom of your garden."- Dr. Mike Inglis
Rovers forever! - ToSeek

You mean there really are 500,000 (error margin ± 499,999) Intelligent civilizations?

__________________
A slight inclination of the cranium is as adequate as a spasmodic movement of one optic towards an equinine quadruped utterly devoid of any visionary capacity.