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

[Bernard Cleyet <bernardcleyet@redshift.com>]

On 2012, Jul 17, , at 18:32, John Denker wrote:

> In the present case, before you run off and spend time and money
> building a trampoline, consider how much better *and* cheaper it
> would be to stock up on masking tape plus a collection of suitable
> curved objects.


But!   


Why not still use it.  With the preface this is a model of an inverse function attraction.  Further one hopes it's inverse square, so it models Newton's "explanation" of planetary (and satellite) orbits, then show it's inexact, because elliptical orbits precess.

On 2012, Jul 18, , at 08:30, Ken Caviness wrote:

> How could the "wow factor" be reinserted? 


Is not the (my) above "wow" enuf?

Finally, introduce the precession of Mercury, and explain by introducing  the masking tape à la JD.

bc