this post was submitted on 18 Aug 2023
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[–] jetsetdorito@lemm.ee 6 points 1 year ago (2 children)

This can't apply because unlike the portals, both sides of the ring are moving at the same speed/direction.

[–] lightnsfw@reddthat.com 2 points 1 year ago (1 children)

The ring is not touching the thing passing through it to impart any forces. The object passing through carries only what energy it takes with it.

[–] min@lemmy.sdf.org 2 points 1 year ago

Then where does the energy to displace the air on the blue side of the portal coming from?

[–] Shiki@lemmy.world -5 points 1 year ago

Yes they are though, it's the exact same premise.

What force is generated where on the other side of the portal, it's a hole in space, it doesn't transfer anything.

Speedy thing goes, speedy thing comes out. Nothing gets transferred to or from the hole.