this post was submitted on 18 Aug 2023
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[โ€“] 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.

[โ€“] 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?