Add new comment


Instead of its limits, you should consider the assumptions it is based on.
Start with the photon. Wave or particle? Would that matter?

I know of better ways of explaining red shift and particle accelerators that have nothing to do with SR.

Filtered HTML

  • Web page addresses and email addresses turn into links automatically.
  • Allowed HTML tags: <a href hreflang> <em> <strong> <cite> <code> <ul type> <ol start type> <li> <dl> <dt> <dd>
  • Lines and paragraphs break automatically.