Re: space time

On 18 Aug 2006 13:09:07 -0700, "Dwib" <dwibdwib@xxxxxxxxx> wrote:

*** wrote:
I am glad there is interest in the thought about time. I have
wondered alone for many years.

I find it amazing that, although time is related to space, time only
"seems" to go one way: into the future.

I've seen inklings on the Web that this is due to thermodynamic
principles but I'm still curious....

Is there a scientiific explanation as to why time only goes forward?

Dwib

In sci.physics I have been pursuing the thought that time is a
convenient convention and has not real existence.

Einstein's "Time is what clocks measure," me as too flippant.

All clock mechanisms I can think of measure energy released in
uniform, discrete units and counted.

Next thought turns on the speed of light and concept of a light-year.

Light-year is the distance light travels in one earth-year. Easy.
Eart-year is the time it takes for the earth to rotate around the sun
one time or one period of time, or one earth-sun period.

So how far does light travel while the earth rotates one earth-sun
period?

1 light-year, no time needed.

Now is where things get strange. We may conceive of ways for the
earth-sun period to be changed, an near passing of a large body mass.
If this happened to alter the distance the earth traveled to complete
one period, would light travel further?

We believe that the maximum light speed is a constant, if so, the
longer sun path would provide an opportunity for a light ray to travel
further than during the shorter earth period. Which will it be, fixed
speed of light, old dimensions or will the distance the light beam
travel in one new earth year change.

***

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