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[Parsely]

Makes sense. Thanks for taking part!

[Sergarr]

Makes sense. Thanks for taking part!

I like physics, so I should be thanking you

[Parsely]

* GUNINANRUNIN has all the physics.

Physics are pretty awesome.

[wierd]

Is the portal spherical or circular?

(Pet peeve of mine; depicting highly distorted spacetime bridges as circular portals, instead of spherical horizons.)

Also, you said this would be a random point in space; There's also the possibility that there is more pressure on the other side- say for instance, it opens into the lower atmosphere of jupiter, or WORSE, in the core of a star.

[Darvi]

Well it's implied that it's a circular portal, but I think a spherical portal whose surface is exactly the same size would work just as well?

[wierd]

Rate would be quite different, mechanics of flow would be quite different, etc.

LOL--- I now have the silliest Sci-Fi doomsday weapon!

It's a 3D spherical wormhole terminus linking the core of a blue giant star, with the core of a terrestrial planet.  It would blow up the planet like, nearly instantly. LOL.

[hops]

How the hell do you enter a spherical portal anyways?

[Putnam]

The same way you enter a cuboid swimming pool.

[NullForceOmega]

Launched via entry vehicle probably, otherwise you might experience some unpleasantness (hypothetically anyway, we don't have any to make empirical observations about.)

[hops]

yeah but the portal you come out of would be spherical as well, not some kind of weird inverted sphere shape.

So would your shape get distorted if you enter it?

[Parsely]

Is the portal spherical or circular? (Pet peeve of mine; depicting highly distorted spacetime bridges as circular portals, instead of spherical horizons.)

Also, you said this would be a random point in space; There's also the possibility that there is more pressure on the other side- say for instance, it opens into the lower atmosphere of jupiter, or WORSE, in the core of a star.

I'm just a filthy casual, not a real scientist, so I can only see spatial bridges as two-dimensional windows. Explain to me why that's a problem though.

If this is a random point in space, the odds of it being anywhere even near to some kind of body are really, really, really, really, really slim.

[hops]

Here, I drew this. Think of it as a 2-D cross-section of an object entering a pair of portals which are flat planes (AKA the ones you see in Portal) and a portal that are non-corresponding curves (AKA spherical portals)



I just don't understand how you're supposed to enter them without becoming distorted.

[i2amroy]

The secret lies in giving the actual space inside the portal itself a volume. If you imagine the curved orange a blue portals being opposite sides of a complete circle, then objects that pass in come out exactly the same as they went in. It just means that you have a tiny bit of space that exists in-between the two sides of the portal (and is really the only way non-flat portals could work, you have to have a warp-able space between the two to make up any edge differences).

[forsaken1111]

Since we're talking portal physics...

Spoiler (click to show/hide)

What happens to the rod?

Spoiler (click to show/hide)

Say these portals are pushed together. What happens to the man?

[Darvi]

A and c are easy. The rod is still pulled down by gravity, and thus accelerates until it reaches terminal velocit,  and in the other one it gets gut in half.