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#174

princeharry (08/24/2012) []
You may have made a torus in 4 dimensions. Imagine a 1 dimensional straight line twisted in 2 dimensions to make the ends meet, that's a circle. If you were a 1 dimensional creature walking along that line you'd think that line never ended even though it appears straight. Imagine a tube (which is what your rope is) twisted in 4 dimensions so the ends meet, that's a torus. If you walked along that rope you'd think it never ended even though it appears straight. No breaking of laws of physics needed, just a 4th spacial dimension (time is not a spacial dimension).
#172

alleksi (08/24/2012) [] probably neither.
granted that you are using a ******* device that rips two holes in our dimension, that are connected to each other, which you can travel trough.
i guess the holes are connected by a fourth dimension, so you haven't created a line nor a circle, but instead a shape that cannot be defined by our three dimensional world
not to mention gravity would still affect the rope, causing it to fall on the bottom part of the portal. it couldn't be a circle because...well...quite obviously circles aren't shaped like that
quite puzzling indeed
granted that you are using a ******* device that rips two holes in our dimension, that are connected to each other, which you can travel trough.
i guess the holes are connected by a fourth dimension, so you haven't created a line nor a circle, but instead a shape that cannot be defined by our three dimensional world
not to mention gravity would still affect the rope, causing it to fall on the bottom part of the portal. it couldn't be a circle because...well...quite obviously circles aren't shaped like that
quite puzzling indeed
#178 to #172

alleksi (08/24/2012) []
I know this really isn't part of any portal lore or any real life physics theory.
its just something I came up with and is probably 100% false
but what I mean by being connected by fourth dimension is this
(I recommend watching this www.youtube.com/watch?v=N0WjV6MmCyM first, though)
if we were to imagine portals in a two dimensional world, as demonstrated in the carl sagan video, the portals could look like this (first panel) (actually portals would be a single line in a two dimensional world, because in a three dimensional world, portals are just two circles with no (apparent) depth, but for the sake of demonstration, we'll imagine them being similar to the ones in the portal games.)
now lets imagine that we're some omnipotent creature, observing the two dimensional world, from the third dimension, the portals could something like this (second panel)
but because the two dimensional creatures can't observe the third dimension, they won't be able to see or sense the apparent "tube" that is being created between the portals. so as they pass trough the portal. they don't feel/see the third dimension and for them it only feels like they've stepped trough a door...in to the same room again.
now do the same thing with three dimensions and the tube wouldn't be a simple looptydoopty"
its just something I came up with and is probably 100% false
but what I mean by being connected by fourth dimension is this
(I recommend watching this www.youtube.com/watch?v=N0WjV6MmCyM first, though)
if we were to imagine portals in a two dimensional world, as demonstrated in the carl sagan video, the portals could look like this (first panel) (actually portals would be a single line in a two dimensional world, because in a three dimensional world, portals are just two circles with no (apparent) depth, but for the sake of demonstration, we'll imagine them being similar to the ones in the portal games.)
now lets imagine that we're some omnipotent creature, observing the two dimensional world, from the third dimension, the portals could something like this (second panel)
but because the two dimensional creatures can't observe the third dimension, they won't be able to see or sense the apparent "tube" that is being created between the portals. so as they pass trough the portal. they don't feel/see the third dimension and for them it only feels like they've stepped trough a door...in to the same room again.
now do the same thing with three dimensions and the tube wouldn't be a simple looptydoopty"
#163

KESTRELx (08/24/2012) []
portals are wormholes, they bend space. (the sprotest distacne between two points is no distance) you have a straight line.
not hard...
not hard...
#162

abindustries (08/24/2012) [] well... since its a portal theory... it is a straight line into infinity because it doesn't loop around to tie to itself, it just ties to itself because of two planes that defy the laws of physics. therefore it is one single line.
#161

sushipoop (08/24/2012) []
Holy **** this has blown my mind. It is not as obvious as it looks.
Thinks about it, tie two ends of the same rope together and you get a circle no matter what, its just a rule.
But with portals you create a paradox where it has to be a circle but seemingly is a straight line.
Thinks about it, tie two ends of the same rope together and you get a circle no matter what, its just a rule.
But with portals you create a paradox where it has to be a circle but seemingly is a straight line.
#159

imamawesome (08/24/2012) []
The rope is flying... it should actually fall down to each end of the portal
#150

anonymous (08/24/2012) []
Hmmmmmm.... Well lets assume you shot Portal Blue (PB) on Wall A (WA) and you shot Portal Orange (PO) on Wall B (WB). Judging by the image, WA and WB are parallel which means PB and PO are Linear due to their center point. If an elephant monkey lick toes an orange, then my Chrysler has boots on its ears. So you can see it is obviously in a trianglegon. I rest me case
#149

ningyoaijin (08/24/2012) []
Both. It's an infinitely long line, which is exactly the same geometrically as a circle with infinite diameter.
#158 to #153

ningyoaijin (08/24/2012) []
Make a circle and set r to infinity. What do you have? A line which is infinitely distant from a point.
On the left is a circle, with two radial lines, which are defined as being perpendicular to the point at which they intersect the circle on its edge. the angle between them is always nonzero, so there's curvature. On the right is an infinitely large circle. Any two points which are perpendicular to where they intersect also happen to be parallel to oneanother. A line is defined in this exact way, as is shown in the circle to the right.
tl;dr an infinite line is, in fact, a circle.
On the left is a circle, with two radial lines, which are defined as being perpendicular to the point at which they intersect the circle on its edge. the angle between them is always nonzero, so there's curvature. On the right is an infinitely large circle. Any two points which are perpendicular to where they intersect also happen to be parallel to oneanother. A line is defined in this exact way, as is shown in the circle to the right.
tl;dr an infinite line is, in fact, a circle.
#167 to #158

ifedary (08/24/2012) []
I couldn't understand alot of it since it had alot of hard words in it (i'm not english) a circle with a radius of inifinite would have that line on the right left and the bottem aswell, this one only has one and it doens't go to the right or left to infinity. I'm not sure if this is a a respons to what you said but i tried
#177 to #167

ningyoaijin (08/24/2012) []
I see what you mean, but things can "exist" without really existing, but their form would take on another shape. In this case, an infinite circle can exist, but in doing so it would become a line due to the limitations of finite space.
In this sense, such a circle can only exist as a line facing in one direction if it were to appear in our Universe.
...Sorry for difficult language, but it's hard to explain using simple words.
In this sense, such a circle can only exist as a line facing in one direction if it were to appear in our Universe.
...Sorry for difficult language, but it's hard to explain using simple words.
#146

allamericandude (08/24/2012) []
Well, if portals warp spacetime through a 4th dimension, then the rope has made a circle in 4 dimensions, but a straight line in 3 dimensions.
Actually, I have no idea what I'm saying. Well, I sorta do, but I don't...
Actually, I have no idea what I'm saying. Well, I sorta do, but I don't...
#144

whaleman (08/24/2012) []
Well, it depends on your definition of a circle. A perfect circle has 360 equal degrees. Physically, it has to be a line suspended in space because of a physical paradox. We don't know in what direction we are taken from portal A to portal B, so it could be a circle although it would be much more appropriate to call it an infinite loop.
#143

Theyneverknow (08/24/2012) []
..How could this be a circle..If you put your hand in one portal and it comes out another it's not a circle round, it's a straight line
Start of rope in portal A, end of rope out portal B, untied they are a straight line, yes?
Tie them [if portal A and B are like the picture] they are still a straight line
Debating Portal Logic..what the **** am I doing
Start of rope in portal A, end of rope out portal B, untied they are a straight line, yes?
Tie them [if portal A and B are like the picture] they are still a straight line
Debating Portal Logic..what the **** am I doing