/sci/ - Science & Math

Please. The only correct propeller that has been posted so far is picrel.

Look at the not-parallel version on the right. The propeller spins into the air, see? where it belongs.

>>15231433
Already answered in a previous thread, with picrel. Imagine a cube going through, compared to those lines of light.

eli5: it's because light moves in straight lines and takes zero force to bend/stretch. Cubes don't. The other relativity stuff only matters if it's going REALLY fast.

>>15228679
>As for why it's relevant: it has been expressed several ways, admittedly none of them ideal
None of them are ideal because they're all just committed to the same mistake.
The portals are, for all intents and purposes, attached to each other. The light doesn't traverse the empty space in between, that's the whole point. It's not like a prism. Those lines in >>15222790 aren't the path the light would take at all, and they're not straight lines when seen through the portal, nor would they appear as such.
The light doesn't come out stretched or skewed or distorted. Things simply appear to be at an angle through the portal because they are, through the portal. A straight line through the portal is not a straight line looking outside the portal and vice versa, but it is a straight line, nonetheless.

A portal is like a doorway. Things simply pass through them.