/sci/ - Science & Math

>>4798854
Sports, Gym, Movies, House Parties/Get togethers, Bar scene

Basic shit everyone else does.

>>4777428
>General relativity does not begin with a Lagrangian

http://en.wikipedia.org/wiki/Lagrangian#General_relativistic_test_particle

http://en.wikipedia.org/wiki/Einstein%E2%80%93Hilbert_action

Just like all physics. You start off with a least action principle and derive a lagragian (or hamiltonian, or fuck all). That is the way all physics is done.

Einstein equation is the Euler-Lagrange equation of the Einstein–Hilbert action.

>>4693584
Ears must be placed opposite eachother for better hearing. It is better to not have the ears aim in the same direction as the eyes, this coveres more ground.

The nose, eyes, and mouth are arranged on the face in order of input/output increasing activity. You have the mouth the lowest, because it gets the most intake/outtake, then the nose, then the eyes (only intake is light).

If you arranged them any differently you would get tons of incidents (throw-up/snot in the eyes, snot in the mouth, etc).

Get it?

>>4644027
Penn was on the "celebrity apprentice" this season. Guy was the strongest player on the show. He was far the smartest and most qualified as well. He really didn't cause any drama though. He was always respectful, and considerate of others.

He got fired because he was basically too nice a guy. I will no longer be watching that show.

>>4595547
1) Calculate the comoving distance from the earth to the end of the observable universe.
This is the "radius" of the obersavble universe.

2) Multiply that shit by 2.


This is a typical problem that is given in Cosmology, or general relativity classes (usually at the graduate level).

http://en.wikipedia.org/wiki/Comoving_distance

>>3160938
Not all of us are as cool with dating our male cousins as you.