BB84@mander.xyz to Science Memes@mander.xyzEnglish · 9 days agothey tricked usmander.xyzimagemessage-square4fedilinkarrow-up1104arrow-down16
arrow-up198arrow-down1imagethey tricked usmander.xyzBB84@mander.xyz to Science Memes@mander.xyzEnglish · 9 days agomessage-square4fedilink
minus-squareBB84@mander.xyzOPtoScience Memes@mander.xyz•👁️ 🌹 💨 💨linkfedilinkEnglisharrow-up2·26 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) linkfedilink
minus-squareBB84@mander.xyzOPtoScience Memes@mander.xyz•👁️ 🌹 💨 💨linkfedilinkEnglisharrow-up2·26 days agoOne ton of TNT is 1E9 calories which is 4 gigajoules. So 0.2 petajoules should be only 50 kilotons of TNT? linkfedilink
minus-squareBB84@mander.xyzOPtoScience Memes@mander.xyz•👁️ 🌹 💨 💨linkfedilinkEnglisharrow-up7·26 days agochonk rose 😳 linkfedilink
minus-squareBB84@mander.xyzOPtoScience Memes@mander.xyz•👁️ 🌹 💨 💨linkfedilinkEnglisharrow-up4·edit-226 days agoKinetic energy or total energy? Assuming the rose weight 10 grams I get that 1.12PJ total energy, but only 0.23PJ is kinetic. linkfedilink
BB84@mander.xyz to Science Memes@mander.xyzEnglish · 27 days ago👁️ 🌹 💨 💨plus-squarelemmy.mlimagemessage-square30fedilinkarrow-up11.15Karrow-down16
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BB84@mander.xyz to Astronomy@mander.xyzEnglish · 2 months ago25 Images for Chandra's 25thplus-squarechandra.harvard.eduexternal-linkmessage-square0fedilinkarrow-up11arrow-down10
arrow-up11arrow-down1external-link25 Images for Chandra's 25thplus-squarechandra.harvard.eduBB84@mander.xyz to Astronomy@mander.xyzEnglish · 2 months agomessage-square0fedilink
BB84@mander.xyz to Science Memes@mander.xyzEnglish · 2 months agocalculate the transmission coefficient mander.xyzimagemessage-square0fedilinkarrow-up10arrow-down10
arrow-up10arrow-down1imagecalculate the transmission coefficient mander.xyzBB84@mander.xyz to Science Memes@mander.xyzEnglish · 2 months agomessage-square0fedilink
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)