BB84@mander.xyz to Science Memes@mander.xyzEnglish · 3 months ago👁️ 🌹 💨 💨lemmy.mlexternal-linkmessage-square30fedilinkarrow-up11.17Karrow-down16file-textcross-posted to: [email protected]
arrow-up11.16Karrow-down1external-link👁️ 🌹 💨 💨lemmy.mlBB84@mander.xyz to Science Memes@mander.xyzEnglish · 3 months agomessage-square30fedilinkfile-textcross-posted to: [email protected]
minus-squareBjörn Tantau@swg-empire.delinkfedilinkEnglisharrow-up3arrow-down1·3 months agoWhich is achieved by spacetime dilation which can in turn stretch or compress the light waves.
minus-squareBB84@mander.xyzOPlinkfedilinkEnglisharrow-up2·3 months 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)