Well Yea Forums?

He literally ends the video with an "it depends" since the hypothetical answer doesn't work like the game does

>has seen this thread a million times
>still doesn't get that the cube would effectively push itself because ever part leaving the portal would be stationary

>Bfags last line of defense against the obvious answer is some retard from YouTube
lmao

The speed at which the portal swallows the cube in this scenario has no effect on the speed at which the cube will move because the piston at no point makes physical contact with the cube so there's no transference of force. The result would be the same as if you slowly lowered the portal onto the cube.

>admitting you were BTFO by "some retard from YouTube"

Attached: MFWNop434_2.jpg (1280x910, 147K)

>Afags still insist they're right even though no one agrees with them
portals are well known to generate energy out of nowhere
>place portal on the floor
>place another on the ceiling
>drop object through floor portal
>create potential energy from nothing
besides, if portals can change the direction of an object's momentum based on the portal's own direction, there's no reason to believe it wouldn't be able to do the same to the object's magnitude of momentum based on the portal's own movement

I didn't admit anything though?
Silly bfags

Portals are applied to static surfaces and only work when static in relation to each other. Fuck off.

Attached: hula hoop.jpg (1500x1500, 99K)

Wouldnt gravity hold the cube suspended between both portals. And then it would slide down a bit because the orange end is tilted

Thanks

WE DON'T KNOW!

There is no actual math that can explain this crap because the portals break all known laws of physics by exsisting.

>he doesn't use the cube
>assumes the cube and the player respond to the game engine's physics identically

Pretty sure they actually do in the Source engine.

I wouldn't be suprised if they did, actually. Considering all the hurtling around like a ping pong ball you do in portal.

Attached: 87345635643.png (485x400, 237K)

Wrong. The ending to portal has you shoot a portal on the moon.

Anyone who actually tries to use the game to prove anything is retard tier. It's incredibly obvious that Portal 2's implementation of moving portals was half assed purely for that one neurotoxin puzzle. Not to mention any game dev who does try implementing moving portals properly is going to go for B as the answer because it makes for a more fun game anyway.

soulless particle effects

That doesn’t mean anything.

It disproves your claim.

Where does that energy come from?

Please don't remind of the day and age when Valve actually made video games with lots of SOUL and love in them.

>doesn't use the cube for the second test
>jumps knowing full well that that means he'll only have jump momentum and no launch momentum
Obviously rigged, unreliable, completely inconclusive either way.

applied physics says a, and that b would need to happen for the cube to shoot out

portal says b since portals can't be placed on a moving surface

>your
Not the same guy. Besides, in the context of the game the moon is a static object and done purely for narrative reasons as the climax

Earth rotates, and orbits. All portals move

i used to be an A fag but now im between B team and the C team which is Nothing Happens

portal says neither, my mistake

>jumps
ok so you are just retarded, gotcha

>the moon doesn't move

Retard

What happens now? Does non-existant force on the cube cause it to be crushed, or does non-existance force on the piston cause it to stop moving once the cube can't go through the portal?

Attached: file.png (493x333, 7K)

from the portals, which are easily capable of creating infinite energy

Attached: portal_power[1].gif (350x210, 8K)

Doesn't the energy come from gravity in that image?

portals cost energy.

Game changer

the water at the bottom is transported to the top and acquire potential energy because of it
the portal gun is powered by a mini black hole, right? does that mean that eventually the portals turn off after enough stuff goes through them?

Attached: portals7.png (1714x788, 203K)

I want to hug companion cube.

presumably the black hole has an expiration date. you wouldn't be able to make a black hole act faster or slower so it's like the stream of water. you can use it or waste it, it's not really diminished by you using it.
so in the waterfall example you're using mini black hole power to create a waterfall to then generate power from that waterfall. it would be more efficient to just create the power directly from the mini black hole.

You don't need the water to generate enough power to run all PS3 games user

Attached: Portal Answer.webm (356x200, 182K)

the cube would come out the other side as a flat plane of squished atoms

Even under that argument the very nature of being able to teleport unlimited amounts of mass across unlimited distance instantly indicates that portals posses infinite energy.

obviously it gets crushed between the force from the left platform and the wall outside the other portal.

These 2 scenarios are completly different, what are you asking?

what happens to the cube in this scenario?

Attached: 65435734753.jpg (256x332, 10K)

This

>actually uses the box
That's all it takes.

Interesting, so the stationary platforms do exert a force on the cube? That makes you a B fag you fucking dunce lmao

Fractal folding.

the cube starts stationary but movement comes from going through the orange portal
so it's B

Attached: movement.png (942x258, 13K)

This is literally all you need to show that attempting to answer the meme question is dumb and a waste of time.

There is no fucking momentum applied to the god damn cube

someone post the fucking email already

On the left side, no they aren't.

>box moves through space as it exits portal
>it now has momentum and stays in motion until other forces affect its motion

>gmod portal mod
gay

Didn't we do this a decade ago? Anyway it's literally exactly what the gif shows. In A the cube has no momentum so it flops. In B the cube is being moved by the platform and keeps that momentum when exiting the portal. What's the debate?

Then why is it in portal the cube changes direction if the portals aren't facing opposite directions?

Doesn't matter, they run on the same physics engine and mechanics.

A and B on the left are the same exact event.

retard, the stationary platform is always exerting a force on the cube, even before the portal reaches it; the force will INCREASE if it gets caught between the first platform and the wall behind the second portal until the cube disintegrates, or the platform/wall do

>what is normal force

>It now has momentum
And where did that momentum come from? It wasn't being moved at all. Don't bring up relativity, it's not relevant here. The force propelling the portal toward the cube does NOT make contact with the cube, so it receives no momentum at all.

literally wrong; although they do both run on source, the mechanics were modified and streamlined for portal 1 and portal 2 because the games were more physics oriented

how is there no momentum if the cube is moving through the orange portal

See
The motion of the platform is irrelevant if it contains the portal, because in every other case it's been demonstrated that portals don't touch the things that through them. They're literally just shortcuts through space.

The "debate" is actually that B is what should happen in both instances because they are functionally equivalent but OP is a fag using an edited gif

the kinetic energy comes from the moving platform, which cause it to move through space on the other side of the portal. its moving through space as it exits. it exits at a certain velocity and it has mass

>The momentum of a particle is conventionally represented by the letter p. It is the product of two quantities, the particle's mass (represented by the letter m) and its velocity (v): The unit of momentum is the product of the units of mass and velocity

The normal force of the pedastal is what imparts momentum.

see

momentum is not something you apply to an object its a property of that object

When the portal moves it is equivalent to moving the entire universe. If you have the energy to do that, you should be able to see where the cube's energy comes from.

Why would the force increase? The three objects in question would connect and then stop applying force. What is making them apply more force to each other? The portal that exerts no force?

hoops argument is dumb because it ignores the entire point of portals

Attached: hoops.png (478x428, 6K)

You can't impart momentum on something without touching it. Nothing touches the cube.

let me put it this way

if you crush an object in your hand, you and the object are both exerting a greater normal force on each other; with increasing force, at some point, either your hands or the object will give way

what the fuck do you mean they would stop applying force

see you dont have to touch it or "apply" it, its purely a function of mass and velocity

gravity, magnetic fields

How do Bfags still exist
This is a more clear-cut issue than child sacrifice ffs

B is literally the only option that makes sense. A falls apart under a cursory examination. The only recourse Afags have is repeating rules they learned in high school and coming up with variations of hula hoop arguments.

A is what anyone who played the game would say

Quit copping out, explain it. Demonstrate how kinetic energy can be transferred to an object without making contact with it. Not an example, a specific explanation of how a portal (which we've established does not interact with the object passing through it) imparts kinetic energy on an object.

Those are both correct, you jackass

What the hell is causing the pressure, in your hand your muscles are causing the pressure to crush the object, simply resting it in your closed hand wont crush it not unless it was exceptionally weak.

Why would the box be crushed between two objects with no force being applied to any of them since the portals don't exert force and the piston coming down isn't applying force to any of the three objects in question.

where do you think momentum(the mass of the object and the velocity at which it exits the portal) goes? if it is moving through space(it has to move through space for the length of the object to exit the portal) then it has velocity, and since we know it has mass, we know it has momentum

The padastal is touching the cube.

Its actually C
the moving platform would invert and come out as a distorted mess

Attached: c.jpg (1003x435, 66K)

>Take a hoola hoop
>Slam over a box
>The box doesn't fly off
WTF IS PHYSICS BROKEN

That is also not true.

0% of the kinetic energy of the moving platform (the one with the portal on it) transfers to the object. We're using the silly assumption that a portal can be glued to an object and moved by it, that's why your conclusion inherits that silliness. To clarify, all of the platforms kinetic energy is counteracted by its impact with the static platform. And again, none of that energy has any opportunity to affect the cube. The cube is NOT moving through space as you say, but space is moving around it. This wouldn't matter because of relativity, but the portal isn't an object and doesn't touch the objects which pass through it. That's why it's counterintuitive, because it actually DOES matter which platform (moving or static) that the portal is on.

We don't know how it would work because we don't know how portals work. But we do know that in order for portals to work, it has to happen.

>Take user's brain
>tell it to think
>the brain doesn't think
WTF

If you can't see why BOTH work then you're a fucking brainlet

Attached: B.png (846x151, 12K)

the other side of the hula hoop(i.e. the exit) is moving in an equal and opposite direction, so of course the result is nothing. if the exit were stationary and the object had to exit at the same speed it entered, it would have momentum. we have no way of achieving this in the real world though

im not reading your retarded drivel. the box exits the portal at the same speed as the pedestal moves onto it. the pedestal doesnt have to impart jack shit, as the object gains velocity by exiting the stationary portal

Yes, I am able to entertain completely wrong scenarios in my head.

>I'll stick to my assumption while refusing to learn something that could change my mind.

I think the object gains velocity by the movement of the portal, actually. But everything else is accelerated alongside with it because it's part of the same system. When the cube exits the portal, it exits the system.

No physics interaction in the Source engine is anything like the player character. There's tons of extra code managing how the player moves in order to smooth out outlier actions. Especially in Portal. The game always aligns you with the vertical dimension even after you travel through portals that are offset and cause you to come out the wrong way around. Just like how driving vehicles in HL2 has extra programming for keeping the vehicles upright even though it makes no physical sense.

Why would cube stop?
Moon orbits earth.
You can't have entrance to hulahoop move and exit not move.

But literally no momentum is transferred from the portal to the object, it is effectively a hole in space.

It doesn't matter where it comes from, it's there.

Portals in Source take the quaternionic values of transform and movement vectors of physics objects and/or the player and convert them based on the relative angles of the portals they're traveling through. An object being enveloped by a moving portal has no movement vector. All that happens is that the gravity vector changes if the end portal is in a different orientation. No movement gets transferred through portals because no movement exists when an object is stationary even if there's relative movement between objects and portals due to the movement of the portal. Because portals aren't supposed to move so the programming doesn't exist the other way around.

youtu.be/0TZd95BCKMY

Its momentum comes from a change in reference frame. There is no such thing as an absolute reference frame or absolute velocity. As such, there is no such thing as an absolute amount of momentum, it always has to be measured in relation to something else.
As an example imagine a car travelling at 10 m/s down a road with nothing else existing. This scenario is functionally identical to one where the road travels at -10m/s and the car is stationary. All physical interactions will be 100% identical.
In the portal and cube example an observer outside of the blue portal would see the cube and its entire room speeding towards him. Therefore absolutely everything in that room has momentum in that reference frame. As the cube passes through the portal its momentum should be preserved.

yeah obviously that shit wasn't wasn't accounted for in the original game
PortalProof.webm is posted in every fucking thread about this

Not this fucking shit again. Are there actual retards out there who think it's A or are you just pretending?

All b fags are actual retards

If you honestly think it's A your understanding of physics is below a high school level.

If you honestly think it is b then you literally can't understand that it is a fictional object and has properties that are undefined

The properties of portals are very simply defined. Objects preserve their momentum when going through them. The cube shouldn't suddenly lose or gain momentum just by going through a portal.
From the reference frame of the exit portal, everything in the room has momentum as the orange portal gets closer.

>The cube shouldn't suddenly lose or gain momentum just by going through a portal
Exactly. That is why it doesn't fling out of the fucking portal. Portals do not have momentum, in game they act as literal hula hoops.

Attached: B.png (640x2500, 252K)

>this is why it doesn't fling out of the fucking portal
So where did all its momentum go? Looking from the exit portal it clearly had momentum before it entered, where does it go?
The room slamming into the orange portal or the orange portal slamming into the room are functionally identical, therefore they should behave the same. If you honestly can't understand this you need to revise your knowledge of basic physics.

Attached: Physically identical scenario.png (665x463, 75K)

Why did the first one look so sexual

I would like to see a version of the game where gravitational waves propagated through the portals as well. Could be fun.

>Looking from the exit portal it clearly had momentum before it entered, where does it go?
But it didn't have momentum, it was completely stationary. The platform the portal is on has the momentum.
What the fuck are you even talking about?

Regardless of the answer, the demonstration in this gif is flawed because the launches aren't replicating the exact same conditions. B is demonstrating a completely unarguable launch of the cube through a portal via conservation of energy. No different from how sitting on a platform going 60mph and said platforming stopping is going to launch you at that same speed.

The entire point of the original image was to raise a discussion about whether a portal passing over a stationary object would send it flying or would the object stay stationary.

Attached: 1568151104516.jpg (640x640, 48K)

Put a die on your desk.
Slam your hand down on the desk with the die ending up between two splayed fingers.
That's all the portals are doing.
The cube doesn't "go faster".

>it was completely stationary
No such thing as an absolute reference frame. It was only "stationary" relative to the platform its standing on, it has momentum relative to the portal since they have a closing speed.

>another hoop analogy
I say A but youre retarded

Momentum isn't absolute. The cube has "no momentum" relative the exit portal, but it has momentum relative the entry portal. Your momentum relative the entry portal is what sets your momentum relative the exit portal, otherwise you would've needed to hold on to Wheatley hard enough to withstand the difference between the speed of the Earth's rotation and the Moon's orbit.

In real life velocity is relative. Send a portal screeching towards an object? It would act the same as if the object is screeching towards the portal and it's momentum would be conserved.

In the source engine the physics are unrealistic. The momentum and velocity of the object are relative to the game space. So when a portal comes screeching towards an object, it'll just plop out the other side because it's momentum is not being checked relative to the portal, it's being checked relative to the ground.

See This is the canonical answer

Attached: 2019-06-06 15.43.44.png (680x680, 225K)

I say A but you're retarded

> Send a portal screeching towards an object? It would act the same as if the object is screeching towards the portal and it's momentum would be conserved.
Important addendum: When you send a portal towards an object, it would only act the same as if the object was moving towards the portal ONCE IT PASSED THROUGH.

If you stand still and I'm walking towards you, you have momentum towards me in my frame of reference.

Attached: 1494874716510.gif (504x282, 17K)

Read slowly. It's long.
Tell me if you want a Part 2 especifically detailing the infamous problem with the piston and the sloped exit.

Attached: Portals-Model.png (1046x4319, 379K)

Oh shit, did we find a real life glitch? We need to make portals now!

That's literally not what my example is.
Thanks for wasting space on the internet though.

>You teleport a pie by smashing it
Hmmmmmm

If you can't see how those are functionally identical you're retarded.

>MinutePropaganda
Reminder that this brainlet cuckold;
>Believes Monogamy is bad because our ancestors that died out were polygamous
>Believes that to stop global warming, we need to be more like the biggest polluters in the world
>Believes that weed isn’t addictive

Literally not what I said.
You're painfully stupid and I can see why you're a B.

First line:
> but then there's those B-fags claiming that portals don't conserve momentum or energy
Afags are the ones who claim portals don't conserve momentum. Or rather, they believe that momentum is absolute, so an object's "absolute" lack of momentum would be conserved upon passing through a portal.
Bfags are smart enough to know that momentum is relative, so when a fast portal passes over you, you'd come out of the other end at speed- unless the other end were moving at the same speed, in which case you'd remain stationary.

>cube on the left maintains its position
>cube on the right changes position at a rate equal to the blue portal
Hmmmmm

>Believes that weed isn’t addictive
Shit, you're gonna summon the potheads to this thread now and have them flood the thread by reiterating how it isn't.

Imagine if the platform that the cube is standing on is a bit narrower and can go through the portal along with the cube.
Now the entire platform has momentum as it's going halfway through the portal. Then halfway through the orange portal stops and the platform stops moving relative to the blue portal.
What happens to the cube? It was clearly being "pushed" out by the platform and therefore had momentum.

This scenario is a bit easier to demonstrate but should physically act identically to the orange portal being stopped by the platform.

Attached: completely stationary lol.png (696x564, 33K)

>why you're a B
I'm not

has anybody even attempted to put water through a portal yet? Does water interact with portals?

The problem is the portals are stabilized tears in space time and would require like the energy of a star or more to even work for a second.

But that's not what the portals are doing, user. One portal is moving and one portal isn't.
Your fingers are like a hoop in that both ends of them, entry side and exit side, are attached and moving at the same speed, so a still cube conserves momentum after passing through them by not moving.
Portals are unlike a hoop in that both sides are detached from one another. If the entry side slams down over an object, the relative momentum between that entry side and the object must be reflected as relative momentum between exit side and object.

Did you even play portal 2? In one bit you place a portal on a surface that a laser is hitting and then another portal on a moving surface, which causes the laser to move and slice something.
inb4 >b-but 2 isnt canon

Fucking saved. Now I will be able to stifle these threads before 5 replies, thank you very much.

He might be a brainlet but that's an ad hominem and not a refutal of whatever he says in the vid (didn't watch).

>shine a light through orange portal
>light coming out is moving 70mph faster than the speed of light

Attached: 1507228201993.gif (250x250, 222K)

When something attempts to move beyond the speed of light it slows down, so no problems here.

Shit doesn't make sense yo

Attached: b-nigs.png (600x600, 4K)

Reverse this and have the guy get pushed away, that's the logical end result of Afags.
Bfags wouldn't get sucked in, B is the only option that allows for stuff to pass through a moving portal at all.

That's not even the right argument. In portal 2, you shoot a portal on a moving surface to destroy tubes holding neurotoxin.

>turn on your car headlights at the speed of 60mph
>the lights from your headlights travels 60mph faster then the speed of light from the streetlights
When something travels faster than the speed of light it travels backwards in time. But it would need to have infinite mass or no mass or negative mass

Attached: nani.jpg (720x378, 42K)

When something goes fast through a portal it slows down, so A is correct.

I dont see the problem, both scenarios are true tou dumb cuck

And you shoot a portal on the moon.

>>the lights from your headlights travels 60mph faster then the speed of light from the streetlights
That's not how headlights work.
We're talking about portals here. Apparently they impart velocity on things passing through them. Unless your headlights are portal generators, your argument is retarded.

Makes sense, in scenario A cube stays where it is whine in B its launched

So you agree it's A then right?

Thank you. I've noticed a typo and a miss-copypaste. I'll update and I guess I'll post it next time a portal thread is not deleted.

Movement of cube is caused by displacement of mass arriving through blue portal.

Shouldn’t the momentum of the Ice still be 0 on the train since its the blue portal that’s moving away from it?

portals can already change the direction of moving objects without touching them so I don't see why they shouldn't be able to change their speed.

Attached: Untitled.png (1247x836, 48K)

the orange portal is moving through the cube
the cube is only affected by downward gravity and isn't moving

No... are you really this retarded? in A he just remains where he is

Nothing wrong with this picture, that is exactly what will happen.

Scenario B:
> Portal lowers over hand
> Hand moves away from exit portal to make room for arm
Scenario A:
> Portal lowers over hand
> Hand doesn't move because no momentum lol
> person gets pushed away

The cube is pushing itself, god damn how do people not get this.

>any part of cube leaving portal is stationary
>so emerging part of cube from behind pushes it

Imagine the cube as a train if you have to, imagine what happens to each individual carriage as it leaves the portal.

Now imagine if you move around a giant door frame around the train while its stationary.

This is the kind of bullshit that gets people minding their own business killed in "self defense" absolute projection

>blue portal moves at 20,000 mph
>arm emerges from the orange portal at 20,000 mph
nah m8, won't hurt at all

Door frame:
> Entrance and exit move at same speed
> No movement of train has to occur for train to avoid overlapping itself
Portals:
> Entrance moving, exit still
> Entrance moves over train, train begins emerging from portal
> Train has to move to avoid overlapping matter

Ok then you are assuming the board in front of him is insecure?

Nice non argument kiddo, good luck with physics in high school, you will need it.

Yes. In the game's programming. They convert one vector and quaternionic rotation to another based on the offset between the orange and blue portals. That's the logic of the game. But in the game's code portals themselves do not have those vectors. There are specially programmed cases where a moving portal can realign a raycast, for example with the laser. But that moving portal is not actually altering the movement vector of physics objects being thrown through it based on the movement of the portal. It just directly converts the movement of the physics object as if the portal is stationary. That's why when you quickly envelope an object with a portal the object does not gain momentum as it emerges from the other portal.
The wormholes in Portal are pure sci-fi. Two-dimensional doorways that can be aligned perpendicularly don't function in euclidean space. A wormhole is just a place in space that exists in two locations at the same time. It's a 3-dimensional concept and when you walk in one direction to one portal you emerge from the other in the same direction in space because no movement is ever converted, you are just in a different place. Forward movement being somehow converted to sideways movement is a non-euclidean concept because your movement through space is perpendicular to itself, which is not possible. In a wormhole you are in both places at the same time but your movement is still into the same direction in both places at the same time. You can't turn a 3-dimensional wormhole like a page any more than you can roll a 2-dimensional picture of a wormhole like a ball.

I graduated high school 11 years ago, and talk about a non argument lol

lol didn't read

How does that relate in the slightest? The hole in the board looks big enough for his arm to be pushed back through. If that's not the case, then his arm gets crushed.

Afags will literally kill themselves before admiting this image just proved them wrong

based

I read it, it's great. Yes I want a part 2.

I think it'd pop out but I don't think it'd fly away as though you'd thrown it at 70mph.

the arm wouldn't emerge at 20,000mph but rather it would sort of "materialize" at a rate of 20,000mph if that makes sense

buckle up, Afags

Attached: portal_test.png (3892x1920, 52K)

A guy inside the train will tell that the ice cube is moving at 10m/s relative to the portal and the wagon (or, using a different word, relative to the room).

Literally no one thinks that guy wouldn't get a pole up his ass, retard.

So you admit that A is complete nonsense, right?

why? the pole isn't moving

Show me where in A the cube doesn't move.

Afags will insist they won't experience any momentum from it though.

B is the one where it moves.
A is the one where "it has no momentum so it doesn't move" (except it has to move in order to emerge and A is actually claiming it stops moving after it emerges because "NO MOMENTUM LOLOLOLOL")

Attached: 1568314727392.png (3892x1920, 53K)

portals don't move things, they displace things

Literally no one says the cube in A "doesn't move" or that if they were standing in front of the portal they wouldn't get pushed back by the cube emerging.
You're both retards misconstruing the position of Afags.

>Afag starts having second thoughts about his theory and moves the portal to a safe distance

>Literally no one says the cube in A "doesn't move"
Except this fag , who doesn't understand that displacement is movement.

Displacing something IS moving it.
Something can't move long enough to emerge and then stop moving because "no momentum". The act of emerging gives it momentum.

If that pole is BSP and not a mesh then it might crash or just noclip because I don't think the Source engine's binary space partitioned level geometry is capable of actually having physics-based movement vectors. They just translate and offset the player when clipping, or just gib them instantly when clipping. That's why they probably can't go through Source engine portals without either crashing the game or just producing nothing from the other end.

Actually has anyone tried this? If you take one of those moving geometry brushes in the engine and try to intersect it with a portal, what happens? Will it just clip the first portal and not appear in the other? Or will it just crash?

The platforms aren't moving, so the cube would keep falling through the portals indefinitely, accelerating to terminal velocity. Have you never tried this before?

You're a retard if you think that the first picture is Afag's stance on the issue.

Yeah. The example he’s showing is switching around perspectives when saying what momentum the ice has.
Before going through the portal, the perspective is that of the bystander, which in the example is relatively 0 in all directions.
But after going through the portal, the they just use the perspective of the passengers to add up the momentum.

But it must be their stance on the issue. What other stance is there? "You move, therefore have momentum, when you travel through the portal, but are magically stopped as soon as you're out"? That sounds like mental gymnastics.

>Literally no one says the cube in A "doesn't move"
why are you lying? I've seen people in these threads say those exact worts at least a hundred times
so tell me, if the cube in A is moving, why does it stop moving?

>Literally no one says the cube in A "doesn't move"
Literally the post right above you hahaha

Attached: 1363107438380.gif (200x150, 1.65M)

once again B is proven right

You're actually saying you think that Afags think if they stand directly in front of blue portal that they wouldn't get displaced by the cube?
You really are retarded. Good thing you have velcro shoes - you might strangle yourself otherwise.

That's not an ad hominem. What that user said is
>this guy believes all of this shit, therefore I think his logic is garbage, therefore I don't believe his opinion on X
If anything it's a strawman

but the cube has no momentum, it couldn't push me away

Yeah, that was unfortunate. Just had to have the retard who doesn't understand what displacement is post just before me.

But the example of A still shows that the BBC would still come out of the portal, but won’t fly off suddenly.

Oh, no, Afags think they'd get displaced by the cube, sure, they just think that it would somehow have no momentum and yet still have the ability to displace you.
A is logically inconsistent.
You cannot name an argument for A that isn't incoherent bullshit.
> Cube doesn't move (this would prevent it from emerging)
> Cube stops moving after emerging (this makes no sense)
There are no other possible positions that allow you to support scenario A. None.

They're both wrong.
The cube would behave somewhere between A and B.

Afags on suicide watch

This image is supposed to act like B wins, but A is how it actually works in the games since portal 2 had a moving laser section.

>Lasers wiggle when moved
Hmmmmmmm

youtube.com/watch?v=WZMzJvGmylQ
Also the string in A still wiggles, but its a straight wiggle

Lasers don't wiggle or bend, I'm not sure what point you were trying to make with that video

Are you so dense you need to have it explained that the laser doesn't wiggles because, unlike strings, lasers don't wiggle?

Ackshually I think you'll find that, as a wave, light does indeed wiggle.

Nigger shut the the fuck up

>gmod
unreliable

That would give it even more energy, you flunky. Something that has zero energy isn't going to magically inherit energy when nothing at all is actually moving.

both are phsyical objects. Why would it not? That's like saying if you dropped a bowling ball and human from a cliff, the human would float in midair "because he's not a bowling ball! TEEHEE!"

objects and the player are coded differently in jusdt about any game engine ever written

WHat does that have to do with physics? Moreover doesn't Glados literally explain that "the weighted companion cube is the same weight and mass as Chel"?

just imagine it as a really long tube then

The bowling ball isn't an always-upright bounding box that receives input and has intricately monitored and adjusted movement based on that input for maximum player comfort in navigation. The bowling ball is not a player character. You know what happens to a player character when they stand very close to a ledge without quite falling off? Their other foot floats above the empty void because the player is not a standard physics object whose center off mass offset from the ledge would produce torque and cause them to tumble over the ledge.

>WHat does that have to do with physics?
the physics of objects and the physics of the player are coded differently in just about any game engine ever written
>Glados literally explain
irrelevant, Glados didn't code the Source Engine

A tube has space between its entrance and exit; the entrance can move over an object and the object will not immediately have to exit. Portals aren't like that.

If the answer was in the string example, then the laser would have a trail.

All physical objects go through the portals in the game following the same exact rules. If one thing gets launched through a portal for 50ft, every object in the game goes the exact same distance. Eat a dick.

yeah dude when i run real fast in one direct and suddenly stop the entire world feels me changing the momentum of reality

You know nothing about game design and talk only from the depths of your ass. Be quiet.

it would still be stationary
the gravity would just be weird

In portal it dosn't work like. It just get stuck between the two moving platforms

> portals carry pockets of their source gravity around objects
WHAT THE FUCK?
JUST EXIT DENIAL

and the game wasn't coded to support moving portals
meaning that example is not only incorrectly performed, but also based on a modded version of the game's engine, making it twice as stupid

Source literally uses two different physics you ignoramus. Havok simulated objects use Vphysics and players and NPCs use simplistic and more directly controllable Qphysics. The only reasons why players can move objects at all is what is called a "physics shadow" -a fake mass calculated around the player's bounding box that attempts to induce forces on vphysics controlled assets from the qphysics controlled entities' movements. Take your own advice dumbass.

in scenario A it would actually be flatter than a pancake because it has no momentum to exit out of the portal so the second layer of matter will be teleported into the first layer

i get where you're coming from with B
its easy to imagine it as a guy putting his arm through the portal and throwing a ball but portal literally break reality so its A

it moves relatively sideways there, not perpendicular to the plane it's placed on

> portals literally break reality so the closest comparable physical laws just don't apply even though they could lol
I want to fucking strangle you

Attached: genuineanger.png (842x960, 887K)

infinitely long and short at the same time

im based and you're not sooo... yeah

No, portals don't have any space between them at all. They are one point in space linked through roughly people-sized apertures.
Otherwise they wouldn't conserve any momentum period, even when they're holding still.

alright so its A

DIE

Attached: 1539887689583.jpg (1280x1440, 273K)

if you lower a hoola hoop around a box, does the box suddenly go flying off into the distance? the portal moving doesnt affect the objects momentum. an object entering a portal conserves its momentum. if the object isnt moving then it wont have momentum added to it. portals dont work on moving surfaces except for one puzzle in p2 anyway.

im based

if the portal moving made the box move, one might ask, "at what point does the box start moving?" are the molecules that enter the poetal first acceleratedbefore the rest? would the box be torn apart by having some of its molecules accelerate to whatever speed instantly while the rest of the box stays behind or would it experience sphagettification and stretch out as the portal surrounds it?

but if you assume the box will be launched you should ask yourself when does the box start to move and what is causing it to move?

Wrong because the portal is deaccelerating at such a rate that your arm will indeed feel the effect. Or more specifically, the point where the portal stops on your arm will feel the tension.

If the portal was allowed to keep moving, then the forces felt by your body would equalize as the exit portal feels the recoil, therefore no tugging during normal portal operation.

An object entering a portal conserves its momentum RELATIVE THE ENTRY PORTAL.
If you're "not moving" and a portal moves over you, and you continue "not moving" because you have no momentum, then you can't emerge out of the other side and instead enter some kind of fucking limbo.
You are "moving" as far as the entry portal is concerned- your speed relative the entry portal is translated into speed relative the exit portal as soon as you pass through, no matter what.

Afags are still retarded because even if their logic is used, it still succumbs to B logic when exiting the portal.

If the assumption is made that as an object that exits the portal loses all momentum, as according to them it didn't have any, then when the first atom of whatever is being sent will have no momentum. But 2 objects can't occupy the same space so it must be displaced by the rest of the object, and as each atom comes out and moves the atoms before it out of the way, it imparts momentum, and therefore has speed when coming out of the exit portal.

Attached: 12984354984534.png (821x962, 940K)

Since nothing is moving nothing happens

Nah it moves when exiting the portal because gravity

The stationary platform is not exuding any force retard lololol

If we could ban all the hoopfags 4channel would be infinitely better.

I dont know about real world physics but that is literally what would happen in-game in Portal/the source engine

its not a in that picture but for a different reason

>Yea Forums still argues about this
Why? the cube is pushed through because the moving portal essentially eats the thing and once on the other side it just sorta slides down all sad an shit because the cube never had any momentum and was only pushed through with its own mass

This is falls because in the original example its not the box that is moving but a platform with a portal on it.
If the original example was to be like this, then the platform with the box would be moving towards the stationary portal and it would be B.
But the box is stationary in the original example.

can't wait for the mental gymnastics to explain this one

>was only pushed through with its own mass
we call that movement

Where the fuck do the pink strings come from?

>RELATIVE THE ENTRY PORTAL
where in the whole wide world does anything pertaining to the game state this?

Yes but it decelerates as theres less mass pushing it and theres barely any to begin with as a result of not being the moving thing, by the time its through it is back to not having anything more than gravity.
Imma give a foodish analogy because why not, imagine you are bobbing for an apple yeah?
Now imagine gravity in your mouth is angled 30 degrees in another direction and imagine what the does to the apple as you put it in your mouth

It's how fucking physics work, dickweed.
The universe moving around you is fundamentally identical to you moving in the opposite direction through the universe.
A moving portal is akin to a moving portion of the universe; space itself is moving around an object.

are you blind? in the image you responded to, the string is stationary and the entrance portal is moving, just like the original problem

Attached: portals.png (1741x1024, 257K)

>ctrl+f "hoop"
>13

Attached: 1567947087610.jpg (480x480, 15K)

I don't think it's stated anywhere in the game, it's just how it's programmed. Physics objects can travel through one portal and emerge from the other because of their logical position being swapped and their movement vector being converted relative to the position of the other portal. What the user is trying to say is that objects can't travel through those portals by moving the portals themselves because the portal doesn't calculate a movement vector for the object relative to the moving portal, it needs to have a movement vector of it own relative to the static world and that's the data the portal needs in order to be able to calculate the object's new position on the other end of the wormhole.

A-fags don't believe in subjective reference frames so this image won't work on them

As opposed to you, some retard from Yea Forums

Why are you talking about yourself

all you have to do to fuck over Afags is ask them at what speed does the cube exit the portal, then watch their brain collapse in on itself as they try to justify something moving at 0 m/s

>it decelerates
the cube is pushing itself as fast as the entrance portal is moving, how does it reaches a complete halt in an instant as soon as it's through?

Attached: portals.png (842x798, 58K)

Of course A...

>DUHUHUU look at how funi I am pretending to be retarded
you're the reason people post those braindead-looking wojaks

>8 minutes
fucking kek
nice

I think we need to round every B fag up and wipe their genes from the pool

i mean if the platforms are pushed together. if would be like an infinite folding thing

Because the total kinetic energy experienced by the cube is basically just gravity the entire time and a bit of air resistance

you're telling me that the event of the cube's mass pushing itself at the speed of the entrance portal's movement generates no energy?

This is exactly what would happen. It wouldn't go flying like B but just a little jump out the other side. Therefore both are wrong and both sides are retards.

wrong

basically no energy

Wrong

Got to say guys, after so many years of having these threads, it warms my heart to see B bros being not only in agreement on why B is right but also in agreement on how god damn retarded A fags are (who can't even agree with each other on why they think A is right).

Attached: 1361834252425.gif (142x103, 114K)

But Achads all agree with each other

> he says in the thread where Afags literally contradicted themselves within one post of one another, replying to the same person

Attached: 1559675907947.gif (480x270, 87K)

all that proves is that there's many possible ways it could be correctly theorized to be A, but only wrong one way to believe its B.

> Bchads are unified because their theory is rooted in fact and makes inherent sense
> Afags all have to make shit up and accidentally contradict one another
> but lol a is right

Attached: 1541956059824.jpg (1060x988, 119K)

Why won't the A meme die?

Because retardation is rife in these barren lands

it's already wrong retard

but that's the weakest of the two arguments, which makes me think your position if poorly thought out cause you don't know what the fuck you're talking about lmao. cuck

portals wouldn't move things in a way that makes an object generate momentum by themselves
if the portal moving down stops halfway into the cube, would it still go flying out?
if the answer is still B then it won't be because of momentum but because of the vibration/shockwave/whatever generated from the collision of blue portals platform with the cube's platform
in which case the logic of A is correct and B's is wrong

when I say "by themselves" I mean the portals
the portals themselves wouldn't generate momentum for the object it's displacing

Because its absolutely right you mongrel, a free-body diagram is all you need to prove it

If the portal moving down stops halfway into the cube, it does go flying out.
After all, all the portals "know", in whatever sense the laws of physics are concerned, is how fast an object passes through them, not whether one or both of them is moving.
Your movement relative the portal you enter is translated into movement relative the portal you exit. Therefore, the half of the cube that's out of the other end would have momentum and the half that didn't enter the portal would have no momentum.
The cube would therefore either shear in half or pass through the portal with half of its own momentum.

But the cube doesnt actually have momentum, all the momentum is generated by the moving portal displacing matter and stops as soon as the portal does

> all the momentum is generated by the moving portal displacing matter
Correct!
> stops as soon as the portal does
Ooooooh, I'm gonna have to stop you there.
Momentum doesn't disappear. The cube HAD momentum, and just because the portal stopped doesn't mean the cube will. Momentum is conserved, remember?

and counteracted by gravity

> Portal moves down cube at 100 m/s
> Cube is displaced at 100 m/s for half of its length before portal stops
> Half of cube's mass has 100 m/s of momentum, half of cube's mass has 0 m/s of momentum
> Cube travels up at 50 m/s, slowed down by 9.8m/s/s as per gravity
Is this what you're saying would happen?

You know, if they ever make a portal 3, they're going to explicitly set up and then subvert this scenario

The way I see it, if you take a ring shape and move it down really fast on a box but stop half way down the box, nothing happens, right?
So now the side of the ring the box appears in is moves someplace else, you move the ring down on the box very fast and stop halfway
why, now, does it have momentum? It's just appearing in a different place.
How would it be any different with a normal ring?

No because a displacement isnt movement because you arent putting energy into the cube, the only force acting on the cube is gravity and the displacement of matter from the moving portal, these forces are not remotely equal and because the cube isnt moving and both forces technically push in the same direction you get a cube sliding off a slope being pulled down by gravity, you stop under halfway and the cube will just stick out the other side and you stop over the gravity on the larger side will pull it down the slope

it's an ad hominem

portals don't conserve momentum

>displacement isnt movement

not when using portals it isnt

...

how does that work

Both are true though

> It's just appearing in a different place
> Displacement isn't movement
> Portals don't conserve momentum
Wrong, wrong, and triple wrong.
It's not "just appearing in a different place". Portals are folded space. You don't teleport from one to the other, with some mystical entity checking your momentum relative the universe and translating it when you exit. If part of an object can travel through something, then it's not "displacement", it's "movement through folded space".
Once the cube passes through to the exit side, it no longer matters whether it was holding still on the entrance side, only how fast it passed through. The speed it passed through the portal at (in other words, the speed the portal moved around it) becomes the speed the object exits the portal, giving it momentum.

same thing would happen in A that happens in B, youre still applying the momentum from the platform

Cube is literally standing still in A and then plops down once it goes through it

because energy is not transferred to the cube itself.
This is basic highschool shit with a scifi twist user, its like having a car compacter where one side doesnt have a wall, objects are pushed through but because its a portal theres no physical force doing the pushing other than the force holding the cube together and the fact it has to be somewhere and whatever reality bending meme magic you have to pull off to get working portals

This is due ot the limitation of Source engine, and is not by any means representative of real world physics.

Consider the following: you have a cardboard with a hole in the middle and you slam it on a stationary object with (S1=10m/s). When the object comes out on the other side of the hole, it will still be stationary (S2 = 0m/s). Note that the speed of the cardboard is relative to the object, ie it would not make difference if the cardboard was stationary and the object moved, the difference of velocity would remain the same. HOWEVER. Given that the cardboard with a hole is a physical object, both sides of the hole will be moving at the same speed on the same velocity vector. That is not the case with a portal. A portal is a hole which, in this case have a moving opening and a stationary exit. The opening of the portal slams down on the stationary object with (S1=10m/s), since the exit of the portal is stationary, the relative velocity will be transferred to the object.

It will be launched with a momentum that is equivalent to the velocity vector transformed to the exit portal's angle multiplied by the cube's mass.

>put a portal on the ground
>put another on the ceiling
>drop object through floor portal
>object emerges from the ceiling portal with acquired potential energy
go ahead big retard, explain to me how I'm wrong

I would love to see an A-fag try to precisely describe the position of the cube as a function of time. Put the scenario in zero gravity to make it easier.

>x(t) = position of front face of cube in front of right portal
>V = constant velocity of piston (until it hits the bottom)
>t = time after the left portal contacts the cube

Here I go for scenario B in zero gravity:

x(t) = Vt

Your turn A-fags. Describe exactly what should happen.

but how does an object exit the portal without speed?
even if it's just being "displaced", only the infinitely small layer of the object currently interacting the portal is being warped, everything that came before that layer has to be pushed outwards and in turn given speed

The entire universe is moving in relation to the cube.

Portal is just a hole that comes out in different place, is it not?

becuase you are vastly overestimated how much energy its getting because you think the cube is actually moving as a whole rather than as a vertical slice of it being displaced atom by atom

It is, but that means that the first tiny portion of whatever goes through would have to be pushed out of the way by the next tiny portion.
The object isn't transported all at once, or transparent until it's completely transported.

>vertical slice of it being displaced atom by atom
see >only the infinitely small layer of the object currently interacting with the portal is being warped, everything that came before that layer has to be pushed outwards and in turn given speed

The cube would be crushed by itself, in an ideal condition (ie: no mechanical crudeness of the pistons and they seal perfectly) into shape that would have no height whatsoever.

Movement. Is. Relative. You. FUCKTARD.

yes and it all decelerates immediately after leaving the portal as well and because its happening on such a small scale effects are minimal to nonexistant

To decelerate (which is just a form of acceleration), a force has to affect the cube, in this case, to decelerate immediately, a counteracting force that is close to in its magnitude to the one that snet the cube through the portal has to affect it.

So if I lay down on my bed
And there is portal from ceiling ramming into my dick at the speed of sound and only stop at the base of my dick
According to be Btard my dick would rib off and fly off as the portal stop

so every single slice of the cube is accelerated to the speed of the piston and then just decelerates all at once? For no reason?

yes
are you retarded or something?

Every part of your dick, upon going through the portal, would have the next part of your dick being pushed into it at the speed of sound.

Your dick would either rip off or be completely flattened.

Why would do you something so retarded user?

Updated.
I think I'll make another about the specific problem with the piston on of these days.

Attached: Portals-Model.png (1037x4397, 381K)

Imagine user's dick as it gets pulverized by all of its own 3 inch glory then finally rips due to its momentum after the portal stops, proceeding to bounce around his room like Flubber

>*crickets*

Hmmm... is there really no A-fag that can even specify their own hypothesis clearly?

Perhaps they're still trying to figure out how to argue that the cube doesn't actually move afterwards. Or maybe they're realizing that mumbling about "warping space" doesn't actually mean anything.

Attached: thinking with portals.png (769x423, 40K)

There is no force being applied to the cube. It would behave just like in OP's gif.

Objects travelling through portals maintain their momentum. The cube it has rest and thus has no momentum.

The mental gymnastics people try and accomplish to prove B is incredible. It's A by the internal logic of the game.

user I'm telling you that there exist a cube and there exist a portal. The space between the two shinks at X meters/ sec rate, and consequently the cube will enter the portal at such speed. My riddle to you is this: is it the cube moving or is it the portal?

It literally doesn't matter, all that matters is that the cube and the portal are moving relative to each other

Momentum and force are relative. It doesn't matter how fast the object is moving, because once it's on the exit side, all that matters is how fast it passed through the entry portal, whether the entry portal lowered over it or the cube moved through the portal.

it didn't pass through the entry portal
the entry portal passed through, or around, it

Doesn't matter, it has to move in order to go through the right-side portal. Because the right portal is stationary. There is no argument against this. The only question for A-fags is why it should stop moving.

because it never moved in the first place

BASED

so if the exit didn't move
and the cube didn't move
then how did it get out?

>right portal doesn't move
>cube doesn't move
>somehow the cube exits the portal

ok retard
how about you answer

I dont get it, wasnt it supposed to be both scenarios having the blue portal move down, but with one with the cube ending up flying.

because the entry moved
think of it like a doorway. the doorway moves around the cube, except here the other end of the door is someplace else
the cube doesn't move, the exit doesn't move, but the entry does and causes the cube to instantaneously change spots without generating momentum

When the portal moves down, it reduces the distance between the atoms at the portal and the atoms that have not reached the portal yet. Changing the distance of the atomic bonds creates a force that can cause the cube to move.

>causes the cube to instantaneously change spots
see

"reducing the distance" is basically movement, ie there is movement between the portal and the cube. Whether the portal moves or hte cube is irrelevant.

Y'all tards realize that they have two entire games explaining why you're wrong, right?
If every bit of momentum was always carried through, Chell would have gone at least 1000 MPH through every portal she ever went through and more so if we take into account more than just the spin of the Earth, right?
Stupid asses

> entry moves around cube
> cube doesn't move, cannot emerge from exit
> exit doesn't move, cannot produce cube
> cube disappears
Portals do not cause the cube to "instantaneously change spots". They are a tunnel through space.

Portals conserve momentum relative the entrance/exit points.
Your speed relative the entrance becomes your speed relative the exit as you pass through.
So the speed of the earth is null, since both portals are usually moving in accordance with it.

Spacetime is what's moving, not the object and energy within spacetime
Moving THROUGH space is what momentum is
The problem lies in the fact that we have no idea what happens if spacetime itself is magically dragged around
Portals aren't tubes
They're completely rewritten physics and reality

This was just an explanation of how a cube can get through without having to use relative speed and reference frames. The cube does start moving. I probably didn't jump into the conversation at the best place, but I wanted to use A logic as a way to justify why the answer is B.

Well you've established you haven't read a damn thing said on this thread.