Poll

What shape is a sphere turned inside out?

Cylinder
0 (0%)
Cube
0 (0%)
Taurus
1 (9.1%)
Diamond
0 (0%)
Sphere
10 (90.9%)
Ellipsoid
0 (0%)

Total Members Voted: 11

Author Topic: Visualise This  (Read 5070 times)

Offline dm-horus

  • Banned
  • Hero Member
  • *****
  • Posts: 1042
Visualise This
« on: November 21, 2005, 04:12:05 AM »
Say what you think it is.

Offline Leviathan

  • Hero Member
  • *****
  • Posts: 4055
Visualise This
« Reply #1 on: November 21, 2005, 05:00:37 AM »
nothingnessness

Offline zigzagjoe

  • Hero Member
  • *****
  • Posts: 626
Visualise This
« Reply #2 on: November 21, 2005, 07:14:48 AM »
er....googling this, its some kind of odd thing but it ends up a sphere

Offline spirit1flyer

  • Hero Member
  • *****
  • Posts: 621
Visualise This
« Reply #3 on: November 21, 2005, 10:21:56 AM »
nothing I can think of fits it
"Until you stalk and overrun You can't devour anyone"


Loyal Xfir supporter

Offline CK9

  • Administrator
  • Hero Member
  • *****
  • Posts: 6226
    • http://www.outpost2.net/~ck9
Visualise This
« Reply #4 on: November 21, 2005, 11:06:05 AM »
logically, a sphere, as it doesn't loos or gain mas, and it does not streatch
CK9 in outpost
Iamck in runescape (yes, I still play...sometimes...)
srentiln in minecraft (I like legos, and I like computer games...it was only a matter of time...) and youtube...
xdarkinsidex on deviantart

yup, I have too many screen names

Offline siqueule

  • Full Member
  • ***
  • Posts: 237
Visualise This
« Reply #5 on: November 21, 2005, 11:15:44 AM »
a sphere turner inside out? as a pair of socks?
attention! ne mets pas tes mains sur la porte: tu risques de te faire pincer très fort
warning! don't put your hand on the door: you risk to be grip very strong

Offline Eddy-B

  • Hero Member
  • *****
  • Posts: 1186
    • http://www.eddy-b.com
Visualise This
« Reply #6 on: November 21, 2005, 03:07:21 PM »
have you guys never taken a balloon or somthing spherical inside-out ?
it's still a sphere, but with the inside showing on the outside. Anyway: no googling needed for me: a sphere.

Nice poll, btw!
get some more of these
Rule #1:  Eddy is always right
Rule #2: If you think he's wrong, see rule #1
--------------------

Outpost : Renegades - Eddy-B.com - Electronics Pit[/siz

Offline BlackBox

  • Administrator
  • Hero Member
  • *****
  • Posts: 3093
Visualise This
« Reply #7 on: November 21, 2005, 04:43:51 PM »
I think it's a torus (you spelled wrong, :P )

I can't remember exactly why, all I can really think about is things like d-orbitals and such of atoms. They have toruses in them.

I think I did hear something like this somewhere though.

Offline Stormy

  • Hero Member
  • *****
  • Posts: 678
    • http://www.op3game.net
Visualise This
« Reply #8 on: November 21, 2005, 06:16:05 PM »
I did it in Blender. :P

It says it's the same thing turned inside out :o
`·.¸¸.·´¯`·.¸¸.·´¯`·.¸¸.·´¯`·.¸¸.·´¯`·.¸¸.·´¯`·.¸¸.·´¯`·.¸¸.·
3D artist in Blender, MS3D, and Terragen.
Trying to get good with Scene composition and lighting.

Offline Hooman

  • Administrator
  • Hero Member
  • *****
  • Posts: 4955
Visualise This
« Reply #9 on: November 21, 2005, 06:31:20 PM »
Hmm, a torus sounds like something you tried to turn inside out and got stuck doing it.  :P

But then, can you turn a sphere inside out? If it's a closed shape, and you can't move it through itself, then it should be rather impossible to turn it inside out, or so I would think. Unless this is a trick question about ebedding it in a higher dimension first. But yeah, if this is a question about reversing the side of the shape, so the outside now points inside, then it'd still form a sphere.

Hmm, seems like we need a few questions involving a klein bottle or a mobius strip.

 

Offline leeor_net

  • Administrator
  • Hero Member
  • *****
  • Posts: 2352
  • OPHD Lead Developer
    • LairWorks Entertainment
Visualise This
« Reply #10 on: November 21, 2005, 09:01:22 PM »
Taurus... they're excellent vehicles (even the ones from '94)! But alas, I have a corolla and I love it! :D

Great poll though! Get's ya thinking!
« Last Edit: November 21, 2005, 09:01:45 PM by leeor_net »

Offline Eddy-B

  • Hero Member
  • *****
  • Posts: 1186
    • http://www.eddy-b.com
Visualise This
« Reply #11 on: November 22, 2005, 10:53:00 AM »
Quote
Hmm, a torus sounds like something you tried to turn inside out and got stuck doing it.  :P

But then, can you turn a sphere inside out? If it's a closed shape, and you can't move it through itself, then it should be rather impossible to turn it inside out, or so I would think. Unless this is a trick question about ebedding it in a higher dimension first. But yeah, if this is a question about reversing the side of the shape, so the outside now points inside, then it'd still form a sphere.

Hmm, seems like we need a few questions involving a klein bottle or a mobius strip.
hooman.. (as theoretical as always) at his best! :P
Rule #1:  Eddy is always right
Rule #2: If you think he's wrong, see rule #1
--------------------

Outpost : Renegades - Eddy-B.com - Electronics Pit[/siz

Offline siqueule

  • Full Member
  • ***
  • Posts: 237
Visualise This
« Reply #12 on: November 22, 2005, 01:58:20 PM »
Hooman has reason, how we return the balloon? it is necessary to drill a hole in the balloon, and a perforated sphere, it isn't a sphere, I would see rather a plane, a few very twisted as a vase with an enormous capacity and a little opening... and we can't clog the hole, it is cheating if not  :D  
attention! ne mets pas tes mains sur la porte: tu risques de te faire pincer très fort
warning! don't put your hand on the door: you risk to be grip very strong

Offline Hooman

  • Administrator
  • Hero Member
  • *****
  • Posts: 4955
Visualise This
« Reply #13 on: November 22, 2005, 06:26:17 PM »
Heh. I try.  (thumbsup)

 

Offline Sirbomber

  • Hero Member
  • *****
  • Posts: 3238
Visualise This
« Reply #14 on: November 22, 2005, 08:47:45 PM »
Not enough information.
"As usual, colonist opinion is split between those who think the plague is a good idea, and those who are dying from it." - Outpost Evening Star

Outpost 2 Coding 101 Tutorials

Offline dm-horus

  • Banned
  • Hero Member
  • *****
  • Posts: 1042
Visualise This
« Reply #15 on: November 23, 2005, 03:00:30 AM »
I know there is a "right" answer, but that wasnt really what I was looking for here. If you had to google for an answer then you failed :P The point was (to me which was also not mentioned on purpose) to see how you visualize objects and spacial relationships. The two answers you could give which would pique my interest are the torus and the sphere. Mathematically, it is possible to turn a sphere inside out but giving the answer as sphere can mean one of several things. The person already knows the answer. The person looked up the answer. The person simply assumes that there would be no difference in shape, only in which side faces out. The person answers the most "logical" choice in their mind. The latter indicates how the person views logic. Answering sphere may indicate a logical thought process. All these possibilities also go toward the answer of torus, but this has some interesting extras. If you cancel out (within certain tolerances) surface areas which (may) come into contact when turning a sphere inside out, the result is a torus. When turning the equatorial surface of a sphere inside out the polar surface (in 'reality' being all other parts of the sphere) areas collapse toward one another. Upon contact one may cancel them out. When the equatorial surfaces are fully inverted, they fold in upon themselves forming a new envelope which is internally contained. The surface is closed and becomes a solid. A torus. Answering torus indicates procedural thinking. This was also my answer. While the answer may not be "right" it is an indication of another form of thinking. My theory is that logic is not always the best form of deductive reasoning.

But I never really put this much thought into it when I created the poll, but (even at a casual level) this was my reasoning. :P

Offline siqueule

  • Full Member
  • ***
  • Posts: 237
Visualise This
« Reply #16 on: November 23, 2005, 06:08:45 AM »
the kepler's conjecture she say "any closed and not perforated form can be comparable with a sphere"! if I remember good... so we have two categories of shapes: the torus and the others thing! that induce one chance on two to have the right answer ;)  
attention! ne mets pas tes mains sur la porte: tu risques de te faire pincer très fort
warning! don't put your hand on the door: you risk to be grip very strong

Offline CK9

  • Administrator
  • Hero Member
  • *****
  • Posts: 6226
    • http://www.outpost2.net/~ck9
Visualise This
« Reply #17 on: November 23, 2005, 10:52:06 AM »
I do not see how mass can cancel out mass, even at a mathematical level, and math used to be my thing!
CK9 in outpost
Iamck in runescape (yes, I still play...sometimes...)
srentiln in minecraft (I like legos, and I like computer games...it was only a matter of time...) and youtube...
xdarkinsidex on deviantart

yup, I have too many screen names

Offline Eddy-B

  • Hero Member
  • *****
  • Posts: 1186
    • http://www.eddy-b.com
Visualise This
« Reply #18 on: November 23, 2005, 02:12:32 PM »
WTF is a "torus" ?
Rule #1:  Eddy is always right
Rule #2: If you think he's wrong, see rule #1
--------------------

Outpost : Renegades - Eddy-B.com - Electronics Pit[/siz

Offline siqueule

  • Full Member
  • ***
  • Posts: 237
Visualise This
« Reply #19 on: November 23, 2005, 02:16:00 PM »
a torus? it's a tire without a rim  (thumbsup)  
attention! ne mets pas tes mains sur la porte: tu risques de te faire pincer très fort
warning! don't put your hand on the door: you risk to be grip very strong

Offline CK9

  • Administrator
  • Hero Member
  • *****
  • Posts: 6226
    • http://www.outpost2.net/~ck9
Visualise This
« Reply #20 on: November 23, 2005, 03:31:59 PM »
I'd show you a picture, but I don't want to
CK9 in outpost
Iamck in runescape (yes, I still play...sometimes...)
srentiln in minecraft (I like legos, and I like computer games...it was only a matter of time...) and youtube...
xdarkinsidex on deviantart

yup, I have too many screen names

Offline Hooman

  • Administrator
  • Hero Member
  • *****
  • Posts: 4955
Visualise This
« Reply #21 on: November 23, 2005, 05:03:16 PM »
A torus is a donut. :)

I'm inclined to believe that logical thinking is the best form of "deductive" reasoning.
 

Offline CK9

  • Administrator
  • Hero Member
  • *****
  • Posts: 6226
    • http://www.outpost2.net/~ck9
Visualise This
« Reply #22 on: November 23, 2005, 05:29:24 PM »
and there's only one way I remember of getting a torus:  taking a 2d circle and rotating it along an axis in a 3d plane
CK9 in outpost
Iamck in runescape (yes, I still play...sometimes...)
srentiln in minecraft (I like legos, and I like computer games...it was only a matter of time...) and youtube...
xdarkinsidex on deviantart

yup, I have too many screen names

Offline Hooman

  • Administrator
  • Hero Member
  • *****
  • Posts: 4955
Visualise This
« Reply #23 on: November 23, 2005, 05:39:16 PM »
Mmm, yes. Volumes of revolution. But that refers to the area traced out by the circle as it's rotated. That and it needs to be away from the origin to really produce a torus.
 

Offline CK9

  • Administrator
  • Hero Member
  • *****
  • Posts: 6226
    • http://www.outpost2.net/~ck9
Visualise This
« Reply #24 on: November 24, 2005, 02:54:57 AM »
a tokamak works with a plasma torus
CK9 in outpost
Iamck in runescape (yes, I still play...sometimes...)
srentiln in minecraft (I like legos, and I like computer games...it was only a matter of time...) and youtube...
xdarkinsidex on deviantart

yup, I have too many screen names