this post was submitted on 24 Aug 2024
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cross-posted from: https://lemmy.ml/post/19504984

It's all relative

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[โ€“] [email protected] 23 points 3 months ago (1 children)

For a shift from about 700nm to 350nm: coming right at you at 0.6c

It would also have a kinetic energy of about 1.1234 Petajoules, on the order of magnitude of the Tsar Bomba

[โ€“] [email protected] 4 points 3 months ago* (last edited 3 months ago) (1 children)

Kinetic energy or total energy? Assuming the rose weight 10 grams I get that 1.12PJ total energy, but only 0.23PJ is kinetic.

[โ€“] [email protected] 8 points 3 months ago (1 children)

In hindsight I was a bit generous with the weight, I assumed 50g

[โ€“] [email protected] 7 points 3 months ago (1 children)
[โ€“] [email protected] 2 points 3 months ago (1 children)

Only 10MT instead of 50 then?

[โ€“] [email protected] 2 points 3 months ago (1 children)

One ton of TNT is 1E9 calories which is 4 gigajoules. So 0.2 petajoules should be only 50 kilotons of TNT?

[โ€“] [email protected] 2 points 3 months ago

A fart in the wind next to the Tsar Bomba. My disappointment is immeasurable and my day is ruined.