Theos-Talk Archives (March 2005 Message tt00222)

--- In theos-talk@yahoogroups.com, Vladimir <forums@s...> wrote:
> How do you define physical time?

I didn't. Einstein did. I wish people would stop confusing me with 
Einstein.

> I guess "to come" means "to change spacial position" and any
> change is inseparable from "time". Therefore no thing can change
> (and travel) independently of the course of time and not along
> with the latter, otherwise that thing must have another (its own
> and proprietary) time in which it would change while traveling
> through our usual "time" in any direction it pleases.

I don't know what your point is, but physicists say time runs 
backward for some energies in the universe. I think it's appalling. 
Time stands still for me often enough. If it starts running backward 
that's a hell of a mess.

> As far as I remember, circles within circles were also very
> useful in predicting apparent paths of celestial bodies in the
> sky...

Nope. Until Newton published his Principia celestial mechanics was a 
mystery.

Also, a circle is a special case of an ellipsis and it is true that 
planetary orbits are ellipses.