BB84@mander.xyz to Science Memes@mander.xyzEnglish · 24 days ago👁️ 🌹 💨 💨lemmy.mlimagemessage-square30fedilinkarrow-up11.16Karrow-down16file-text
arrow-up11.16Karrow-down1image👁️ 🌹 💨 💨lemmy.mlBB84@mander.xyz to Science Memes@mander.xyzEnglish · 24 days agomessage-square30fedilinkfile-text
minus-squareBjörn Tantau@swg-empire.delinkfedilinkEnglisharrow-up3arrow-down1·23 days agoWhich is achieved by spacetime dilation which can in turn stretch or compress the light waves.
minus-squareBB84@mander.xyzOPlinkfedilinkEnglisharrow-up2·23 days agoWhile 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)
Which is achieved by spacetime dilation which can in turn stretch or compress the light waves.
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)