- #1
Silviu
- 624
- 11
Hello! I am reading about spherical geometry and for a static system and based on the metric, ##p_0## and ##p_\phi## are constant of motion. I am not sure I understand in which sense are they constant? The energy of a particle measured by an observer depends on the metric (so on its position) in space. So ##p_0## is not the energy of the particle (can't even be measured I think). Can someone explain this to me a bit more? Thank you!