this post was submitted on 26 Jul 2026

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Which is it Lemmy? (thelemmy.club)

submitted 3 weeks ago by ThatWeirdGuy1001@lemmy.world to c/lemmyshitpost@lemmy.world

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[–] luthis@lemmy.nz 18 points 3 weeks ago (2 children)

Speedy thing goes in, speedy thing comes out.

Cube had no speed going in, therefore no speed going out. The portal speed is irrelevant

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[–] untorquer@quokk.au 3 points 3 weeks ago

But reference frame changes as the cube passes through the portal. The piston would feel resistance as its momentum is transferred to the cube to conserve it.

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[–] FishFace@piefed.social 3 points 3 weeks ago (1 child)

The cube has a speed of about 30km/s around the sun. You want to measure speed relative to the blue portal, but why that one and not the orange one?

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[–] megopie@lemmy.blahaj.zone 2 points 3 weeks ago

And if the blue portal is at a different angle than the orange portal, then… well, how fast is the milky way traveling through the galaxy relative to the universe?

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