PV= nRT. And I still remember what R equals.
The square on the hypotenuse is equal to the sum of the squares on the other two sides. I have remembered that for over 20 years now.
Asoiaf: R+l=j. :d
These help kids on the SAT:
1, 1, root 2
1, 2, root 3
[COLOR=Black]You know some people could call this psychological torture. …the flashbacks…
I did two A levels in Maths and one in Physics. It took a long while to block out the equations and it’s all been undone in a matter of seconds.
This still haunts me…
Product Moment Correlation Coefficient :shudder:
Stress engineer here:
[symbol]s[/symbol]=Mc/I (bending stress at outer fiber)
[symbol]s[/symbol]=P/A (axial stress)
I=bh[sup]3[/sup]/12 (area moment of inertia for a rectangular x-section)
I=[symbol]p[/symbol]r[sup]4[/sup]/4 (circular x-section)
[K]{x}={F} (Hooke’s Law: foundation of finite element theory)
What’s burned into my brain goes far beyond mere equations. I have the standard constructions for N (in ZF and NGB!), Z, Q, R, C, etc. and their properties. In addition, I know the definition of a group, a field, a vector space, all other kinds of categories…
Yeesh. I have to go back to school just so I can justify the contents of my head.
And I typoed the reflection coefficient:
(ρ2v2**-**ρ1v1)/ρ2v2+ρ1v1)
a^phi(n) = 1 (mod n) where a is relatively prime to n
(x+y)^n = sum(k, 0, n) C(n,k) x^k y^(n-k)
f(A intersection f^(-1)(B)) = f(A) intersection B
I’ve got about 20 in the cache, but my favorite’s already been mentioned a few times:
I always think of this as e[sup]iπ[/sup] = -1.
That way, whenever you knock on someone’s door, you can sing it to the tune of “Shave and a haircut, two bits!”:
“Ee to the eye pie, equals minus one!”
[I’m jealous of **Hyperelastic**'s arm tattoo, however.]
In seventh grade my algebra teacher told us to put the quadratic formula to a song to help us learn it. I discovered it went quite nicely to a song we were playing in band called “Sunset on the Sahara” that was supposed to sound vaguely Egyptian or something.
For five years I couldn’t write the formula down without getting the damn song stuck in my head. It only let up because I stopped taking math. But now I have it in my head again. Augh.
No need to thank us. It’s all part of the service.
Stranger
The minority carrier drift current is negligible.