# Search results

1. ### What exactly are electrogravitics?

what exactly are electrogravitics?
2. ### Laplace operator

what are the laplace operators for spherical coordinates
3. ### Stumped math problem

I want to find three integers, a b and c, with a^3 + b^3 = 17 * c^3. all each the smallest integer possible
4. ### Piston speed

how do you calculate piston speed with a single cylinder engine no transmission what im trying to do is determine the influence of rod length in that problem
5. ### Hard Math Problem

I have no idea how to do this problem can you guys shed some light? Sqrt^2 == r^2 + r^2 - 2 * r * r * Cos[2 * Pi / 3] Thanks.
6. ### What is the difference between Special Relativity and General Relativity?

What is the difference between Special Relativity and General Relativity?
7. ### What exactly is a D-Brane

What exactly is a D-Brane I understand its a short term for some sort of p-brane but what is a brane and what do they do?
8. ### String Theory

Hey, does anybody know what the string theory tries to prove at singularities of black holes and the expansion of our universe?
9. ### QM mathematics

Hey, what kind of mathematics are needed to understand the bulk of QM and GR?
10. ### Quantum Mechanics & Singularities of Black Holes

Hi. Can Quantum Mechanics explain what happens at the singularity of a black hole? If so, how?