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nerdy

26,078 Views • 198 Favorites • 16 May 2016

anonymous

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DOMjerkerdom

24 Feb 2018

@terrieyedgirl I just had to show you this, nerdy girls mmmmmmm :)

@stovedave You're probably right. I wouldn't know. I just showed them to my hubby who looked at them very quickly, maybe a few seconds, and rattled off what he thought they were. God knows it is way beyond my brain. Lol

stovedave

23 Feb 2018

@piggy_slut On 4 The first matrix is a lorentz transformation for motion in the x direction written in terms of rapidity which is tanh^(-1)(v/c). It's not a rotation matrix cuz it's 4D not 3D and uses sinh and cosh not sin and cos. The second equation is the equation for the 4-momentum of a system with rest mass m. The last equation is the equation for a geodesic.
On 2 the second equation is the conservation of energy-momentum written in terms of a stress energy tensor: not limited to

piggy_slut

23 Jul 2017

1. quantum-mechanical commutation relation for position and momentum, Schroedinger Equation, Feynman diagram showing a nucleon on the left-hand side, Dirac Equation and basic symmetry group of the Standard Model

2. Newton's Second Law, Principle of Least Action, Maxwell's Equations in tensor form, Wave equation
and Boltzmann distribution.

3. Maxwell's Equations

4. Rotation Matrix, Einstein's tensor equations of General Relativity and Christoffel symbols