Re: [Phys-L] Fwd: [PTSOS] spacetime simulator: flexible conduit?

[John Denker <jsd@av8n.com>]

On 07/19/2012 02:25 PM, William Maddox wrote:
> If the darts are turned so the large ends are located away from the center
> the tape looks like it is curving away from the vertical axis.

Yes.

> This could represent a repulsive force 

Yes.

It would be better to call it an /acceleration/ rather than a force,
but we get the idea.

>  that increases with distance.

Not exactly increasing, if the darts have the usual linear taper.  
Such darts have a delta-function of intrinsic curvature at their 
tips.  Elsewhere there is zero intrinsic curvature.

If you want to produce an acceleration that actually _increases_ with 
distance, you would need staggered ranks of darts:

       >>>===---
  >>>===---
    >>>===---
  >>>===---
      >>>===---
  >>>===---
    >>>===---
  >>>===---
       >>>===---


... and/or some funny nonlinear taper on each dart.