Re: When one is fully informed, he knows time is a spatial dimension.

On Jan 15, 3:46 pm, PD <TheDraperFam...@xxxxxxxxx> wrote:
On Jan 15, 2:40 pm, Agent Smith <agent-sm...@two-blocks-on-your-





left.com> wrote:
=?UTF-8?Q?Jeff=E2=98=A0Relf?= <Jeff_R...@xxxxxxxxx> wrote innews:Jeff_Relf_2008_Jan_15__9_31_AX@xxxxxxxxx:

Imagine two indentical clocks, one on the surface of the moon,
and the other on the surface of the earth.

Now imagine a lunar astronaut
talking for 9 seconds ( according to his clock ),
transmitting it to the surface of the earth.

According to the clock on earth, it took less than 9 seconds;
i.e. the signal was blue-shifted as it fell into the gravity well,
and everything the lunar astronaut does is sped up, according to us.

Because time is truly a length and
the gravity of the earth-moon system is so predictable,
it's possible to model it as a ( 4-D ) hyper-volume.

This hyper-volume is the gravity field that General Relativity models.
Note... the hyper-volume is motionless, static;
when one is fully informed, he knows time is a spatial dimension.

Sure, if you consider x=ict to be space.

I don't think even this does it. Applying makeup and dressing up time
to *look* like space, or rather, to make the 4D Minkowski spacetime
look like 4D Euclidean space, does not make time to *be* space, any
more than John Travolta in Hairspray was a woman just because he was
made up to look like one. Sorta.

Mathematically, time can be
manipulated as a spatial dimansion, but there's more to physics than
mathematics. There's physical intuition also, and you're not a physicist
until you can mesh the two. In practice, you can walk around the room, but
you can't walk around time.

To be fully informed, you have to know what you just said *and* what I just
said.

I doubt if Jeff is really interested in knowing anything. Mostly, he's
just looking for a way to kill a LOT of free time.

PD- Hide quoted text -

- Show quoted text -

Dear PD, et. al.: Most of the "clock" arguments are pointless, unless
there is a genuine problem that needs solving. TIME is constant,
though the units of time can be anything convenient. A year makes
little sense on another star system without 365, 24 hour days. Define
a useful problem that needs solving; figure it out intuitively; and
stop worrying about generalities of time problems that only waste...
time. -- NoEinstein --
.

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