• Björn@swg-empire.deEnglish
    31·
    1 年前

    Which is achieved by spacetime dilation which can in turn stretch or compress the light waves.

    • BB84@mander.xyzOPEnglish
      2·
      1 年前

      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)