- #1
tolove
- 164
- 1
The question I'm wanting to ask is, Why does light travel through a vacuum? This is too big of a question to start with, though. Before making this thread, I read around and tried to make a starter question.If I'm not confused by the information I've found, a fundamental reason of why light can travel through a vacuum has to do with the energy-momentum relation:
E[itex]^{2} = (pc)^{2} + (mc^{2})^{2}[/itex]
I don't understand this equation much at all. I think the first question I need to ask has to do with momentum.
How is relativistic momentum different than classical momentum? What is relativistic momentum?Thank you very much for reading!
E[itex]^{2} = (pc)^{2} + (mc^{2})^{2}[/itex]
I don't understand this equation much at all. I think the first question I need to ask has to do with momentum.
How is relativistic momentum different than classical momentum? What is relativistic momentum?Thank you very much for reading!