Recent content by zerokool

I was here raising a question to stimulate discussion. Do you think I can't bring up points you will have difficulty answering? You see, with deep thinking and experience comes the humility that knowledge of anything like physics is a complicated and complex affair. And if you probe deeply...

Thanks for the speling lesson. I know what isotrophy means. Please assume the person asking the question know what the terms they are using mean. I don't want to feel insulted when I come here and you may not know how much I've thought about my question.

In Landau's Mechanics he derives the three conservation laws of energy, linera momentum and angular momentum from three principles respectivly: homogeneity of time, homogeneity of space and isotrophy of space To complete the symmetry could there be a law derived from the isotrophy of time?

Avichal, I think the derivation you are talking about in your second question is related to the Lagrangian of a free particle. What the math is saying is the kinetic energy does not change with or is independent of position. The interpretation of this is the kinetic energy, i.e. velocity, of...