[TML] White Dwarfs, Black Holes & 100 Diameters

[Garry Ward]

----- Original Message ----- 
From: "Jerry W Barrington" <jursamaj at yahoo.com>
To: <tml at travellercentral.com>
Sent: Sunday, November 04, 2007 3:55 PM
Subject: Re: [TML] White Dwarfs, Black Holes & 100 Diameters


> On 11/3/07 11:01 PM, Garry Ward wrote:
>
>> No where near the speed of light here. The only velocity involved is the
>> velocity needed to be at the jump boundary line. Since the ship doesn't
>> travel any distance (the two points in space/time over lap and the
>> intervening space is never passed through), there is no significant 
>> fraction
>> of C involved. Yes, when the ship transits into the new system, if it
>> doesn't have the velocity to remain at the .0001 G line for the target 
>> star,
>> it will start being pulled towards it. Likewise, if it has too much 
>> velocity
>> it will pull away from it. It isn't stationary like a car parked in the
>> drive. Zero Relative is the term I use, implying that there is no change 
>> in
>> distance from specific objects (like the primary) though the ship may 
>> still
>> be following it orbital trajectory around it.
>
> This is hard to explain well without drawing spacetime charts to show you.
> But the thing is that the space and time measuring axes tip as you go
> faster.  What this means, is that having only a .001 dilation effect from
> speed away from the target system will make a 1 parsec jump take you 1 day
> into the past!  If you can reverse your vector and jump back within 2 
> days,
> you get back to your start before you left.  Sure, *you* want to use the
> drive just for fast interstellar travel.  But that is a necessary result 
> of
> relativity, and somebody will exploit it.
>
Ah, huh?

No, jump to another system, even if you then jump back, you will arrive a 
bit (perhaps nano seconds) later, not earlier.

Yeah, I've seen some of those spacetime charts and how they prove you can't 
get there from here in less than decades.

They remind me of the graphics the ancient greek mathematicians used to 
prove that the distance between you and any object could always be cut in 
half, so you really, really couldn not pick up that cup and the arrow would 
never, ever reach you.

Escher also was able to draw some interesting things.

Jump may reposition you in relationship to specific other objects in the 
universe, but to go back in time, you have to reposition all the other 
objects in the universe so they are back into the relationship they were in 
at that pont in time.

Garry
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