Portal logic problem

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Lyri

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grimsprice said:
Quoted to grab your attention.
http://img194.imageshack.us/img194/9339/lolportal2.png

Generally not trying to be a dick, that's how I see it.
Explain to me how it would fall?

I appear to be missing something.
 
Jun 7, 2010
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if the blue portal is in the roof and the orange one in the floor i think shooting a new orange portal a meter away would either cut the pole or fuse it to the floor as Vladshadeu said.
 

slightly evil

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Valve's physics engine makes it shoot back out of the remaining portal, it's the same as when you drop a cube half in, half out, and then move a portal. it breaks physics but then so did the fling technique.
 

Frozenfeet2

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VladShadeu said:
Who's to say we can even have ONE portal pair beyond the first? Chell was the only known operator of a portal gun in the game and a portal was closed for every one opened. So I imagine if two guns existed, someone opening a blue portal would close the other guys blue portal.
Portal 2 has coop, therefore 2 portal guns. I guess they shoot different colour portals.
 

Break

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Sep 10, 2007
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Wizzie said:
grimsprice said:
Quoted to grab your attention.
http://img194.imageshack.us/img194/9339/lolportal2.png

Generally not trying to be a dick, that's how I see it.
Explain to me how it would fall?

I appear to be missing something.
It's a conflict in how the two of you conceive of portals. You seem to visualise the bar problem as stacking the universe upon itself, whereas he presumably imagines each portal feeding into the other. The former suggests that the bar could be set to support its own weight, as a single length of iron standing upon itself all the way down, whereas the latter suggests that the bar would act as a waterwheel, wherein the water is gravity, and the wheel is a straight line. Both achieve basically the same effect, but lead to different intuitive solutions when asking these kinds of questions.

I'm guessing, anyway.
 

Firia

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Your metal bar is a constant. It only appears to be of infinite length. In reality, it is still the same weight, height, length it was when you set the object. When you climb through the portals base, and emerge from the ceiling, your distance remains constant. The only thing that could increase in number is distance traveled.

As for what would happen should you make a new portal? Well, that would depend entirely on how a portal closing on matter reacts with it. The popular theory of course is sheering the object in half where it meets the portal. Which, btw, would leave you with an iron bar the same length as you tried to weld to itself. :)
 

sheogoraththemad

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gabe newell will come down from the sky riding an pony causing death and destruction with rainbows and love, finally he will portal us to the past and the we have to wait longer for half life 3/portal 2.
I'm just saying
 

Daedalus1942

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grimsprice said:
Wizzie said:
The portals are just windows, there is no "space in between".

The pole wouldn't fall because it would already be together.
There is no where for it to move.
What do you mean there isn't any space in between? That wouldn't matter, an object sitting on a table exerts pressure on the table which can be measured. Gravity generates pressure, so what happens to the pressure that gravity generates in the metal pole?


So you could stand on your own head and not fall? That doesn't make any sense.
I think Wizzie is saying that because the iron is exactly the height of the room, it would just shear it off where it's welded (or somewhere along the beam) and then because it has nowhere to move, once it's sheared, it would just sit in the space of the room as it would in effect be wedged between the roof and the floor.
That is of course unless the damn thing picks up momentum (i'm not sure it would seeing as though it's welded to itself), in which case when you alter the portal, chances are it could just go straight clean through your floor and possibly the concrete base your house is built on (or clay).
 

SenseOfTumour

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If I remember rightly, and I'm damned if I remember where I read it, portals push things out upon closing, so to me, it'd force the bar upwards into the ceiling, then when the portal disappears, the bottom would be touching the floor, and if the top is touching the ceiling, you have a fine stripper pole installed! (saint's row 2).

As for the headstand analogy, it's a lot easier to hold a headstand if your feet can push against the ceiling. Thus is the bar is touching ceiling and floor, then it can stay there with no outside forces.
 

CounterAttack

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Dec 25, 2008
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I would think that the bar simply continues through the portals as per usual, the only difference being that it hits the ground at a ridiculous velocity.

Here's a Portal problem for you:

If objects such as Chell, personality cores, radios and cubes can move through portals with unchanged momentum, why can't you shoot a portal ray through two linked portals? Hypothetically, the ray passes through the link and hits the wall opposite the portal it left. In the game, and possibly the sequel, the ray either winks out of existence or recreates the portal, depending on colour.
 

acer840

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Good question, I would think that the instant you opened another portal, the original portal would close and the metal rod would be severed. Depending on where you placed the next portal and which portal closed (the roof or floor portal) gravity would take effect after the pole is severed. The question is what effect does gravity have on the pole, while the portals are open?
 

DigitalSushi

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Zeeky_Santos said:
grimsprice said:
insectoid said:
grimsprice said:
As the portal closes on its 2D plane, it shears the metal.
This. Isn't this why you die if you are standing in a portal when creating a new one?
Yeah, and if you don't, then you should.
Because you managed to cheat reality you deserve to die?
Exactly, fucking glitchers, always bending reality to have an edge in real life.
 

T-Bone24

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Zeeky_Santos said:
grimsprice said:
insectoid said:
grimsprice said:
As the portal closes on its 2D plane, it shears the metal.
This. Isn't this why you die if you are standing in a portal when creating a new one?
Yeah, and if you don't, then you should.
Because you managed to cheat reality you deserve to die?
No, bear with me while I try to explain it. (You were probably joking, but what the hey.) Imagine that you are lying between two portals, half in, half out. Moving the portal that you used to enter would replace it with the wall, so where your hips were would either be replaced by the wall or vice versa. Moving the exit portal would probably only move where your legs are coming out, unless the portal closes then opens again.

I have a question. Shoot a portal at a wall, then another on the ceiling. Stick your legs through the one in the wall, would you fall through? Gravity would be pulling your legs, but would also be pulling your torso.
 

The_ModeRazor

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I...
*logic head asplode*

Onto actual input: Well, gravity still affects it, right? I think it would contniue to fall through the portals.
 

Sephychu

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Surely this is impossible? If the pole were long enough for you to weld the two ends together, you wouldn't be able to put it in the Portal because it would hit itself coming out of the Portal above. If the pole were slightly shorter and you used more solder, then maybe, and I guess if the portal moves and thus closes it would delete a two dimensional part of the pole and the pole could be bonded to the surfaces that the Portals were on.
 

Outright Villainy

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It would cut the bar into one again and it'd come out the new portal.
And yes, it'd be constantly moving downward, just because it's one piece, it doesn't mean it's not affected by gravity. When something is touching the ground, gravity still pulls it down. If it can move downward at all, it will.