• BB84@mander.xyzOP
      link
      fedilink
      English
      arrow-up
      2
      ·
      2 months ago

      While it is true that space time dilation can cause red/blueshift, that is a distinct from the doppler effect which is the primary effect here.

      (dilation plays only a small role: without time dilation our answer going from 700nm to 350nm would be 0.5c instead of the 0.6c calculated below)