2D without gravity

Higher-dimensional geometry (previously "Polyshapes").

2D without gravity

Postby Geosphere » Thu Jul 29, 2004 6:22 pm

chitspa wrote:As we all know, for a 2D person to look behind them is to flip over and look up-side down.


You assume a world in elevation view, from a side.

Why not plan view, top down?

Split from: "The People" by BobXP
Geosphere
Trionian
 
Posts: 216
Joined: Fri Jan 02, 2004 6:45 pm
Location: ny

Re: The People

Postby jinydu » Fri Jul 30, 2004 1:57 am

Geosphere wrote:
chitspa wrote:As we all know, for a 2D person to look behind them is to flip over and look up-side down.


You assume a world in elevation view, from a side.

Why not plan view, top down?


I think its because such a universe would not have gravity, and hence would be less analogous to our life on Earth. However, it would probably be a better analogy to living in outer space, far away from any major gravitational influences.
jinydu
Tetronian
 
Posts: 721
Joined: Thu Jun 10, 2004 5:31 am

Postby Keiji » Sat Jul 31, 2004 2:48 pm

Without gravity it would be impossible to move around... :roll:
User avatar
Keiji
Administrator
 
Posts: 1984
Joined: Mon Nov 10, 2003 6:33 pm
Location: Torquay, England

Postby swirl gyro » Thu Aug 05, 2004 9:42 pm

bobxp wrote:Without gravity it would be impossible to move around... :roll:


What makes you think that? My prefered method of movement is warp drive, but I suppose that generally does involve gravity. Anyway, any sort of propulsion would do. Ever heard of fluidic space? It'd be nice if we could just swim from place to place.
I sense, therefore I am.
swirl gyro
Dionian
 
Posts: 27
Joined: Thu Jul 15, 2004 12:10 pm
Location: Pasadena, Ca

Postby Keiji » Thu Aug 05, 2004 11:03 pm

Without gravity, there is no friction. Without friction, there is no movement. :roll:
User avatar
Keiji
Administrator
 
Posts: 1984
Joined: Mon Nov 10, 2003 6:33 pm
Location: Torquay, England

Postby PWrong » Fri Aug 06, 2004 2:11 pm

You can have friction and movement as long as you have forces acting. Friction can be caused by any force. There are three other forces to choose from, without gravity
User avatar
PWrong
Pentonian
 
Posts: 1599
Joined: Fri Jan 30, 2004 8:21 am
Location: Perth, Australia

Postby Keiji » Sat Aug 07, 2004 6:35 pm

Not if they have vacuum around them.
User avatar
Keiji
Administrator
 
Posts: 1984
Joined: Mon Nov 10, 2003 6:33 pm
Location: Torquay, England

Postby PWrong » Sun Aug 08, 2004 12:41 pm

A moving object can collide with another object and exert a force on it, even in a vacuum. Electromagnetism can transmit through a vacuum. Atoms are always surrounded by a small vacuum, but the strong and weak forces still work.

By the way swirl, what's fluidic space?
User avatar
PWrong
Pentonian
 
Posts: 1599
Joined: Fri Jan 30, 2004 8:21 am
Location: Perth, Australia

Postby catwoman » Wed Sep 08, 2004 4:53 am

Hi,
we had a similar discussion during the NASA space station robot design activity with my then 7 yo. who intuits that one can swim in any atmosphere, and a few scientists. there are videos online of the toys they took into microgravity to experiment with movement, some with flippers which moved surprisingly fast - you can watch the astronaut ducking out of the way.

There is a little toy at http://www.sodaplay.com that exists in 2 dimensions and you can increase and decrease Gravity and friction, switch gravity on and off, as well as dialing it up and down. To get coordinated movement of the toys you create takes some doing and is rather harder in zero G.
cheers,
Carolyn
catwoman
Nullonian
 
Posts: 3
Joined: Wed Sep 08, 2004 4:37 am


Return to Other Geometry

Who is online

Users browsing this forum: No registered users and 10 guests