Re: accelerating every atom equally

We were discussing a technology that combined a few speculative
processes into interesting effects for interstellar travel.

Here's a table of transit times measaured aboard ship

On Dec 14, 12:30 pm, Willie.Moo...@xxxxxxxxx wrote:
Dist 1g 10g 100g 1kg 10kg 100kg 1 Mg
4.3 ly 3.6yr 4.3mo 12.9da 1.3da 3.12hr 19 min 2min
27 ly 6.6yr 7.9mo 23.7da 2.4da 5.76hr 35 min 4min
30kly20.0yr 2.0yr 73.1da 7.3da17.52hr 1.75hr 11min
2M ly28.0yr 2.8yr 102.3da 10.2da24.48hr 2.50hr 15 min
n ly 1.94 arccosh (n/1.94 + 1)/a years

providing range is less than 1,000 million light years
due to expansion of universe

Consider 10 million gees!

10 Mega-gees
12 sec - 4.3 ly - alpha centauri
24 sec - 27 ly - Vega
66 sec - 30,000 ly - center of galaxy
90 sec - 2,000,000 ly - Andromeda

These are ship-board times. That means for all intents and purposes
4.3 years pass outside the ship when travelling to alpha-centauri and
4.3 years to travel back. So, if you made a day trip to alpha-
centauri, you'd spend 12 seconds to get there and 12 seconds to get
back at 10 million gees - but if you left today you'd be back sometime
in 2017!

No worries, you just hop in your time machine that you reserved when
you left and jump back in time 9.7 years arriving back at the same
time shown aboard ship.

Can you do this? If you have a big time cylinder somewhere that's
been operating continuously for the past 10 years sure.


What's a time cylinder?

http://en.wikipedia.org/wiki/Tipler_cylinder

But to do this for travel to Andromeday, you'd need to have a big time
cylinder operating for the past 2 million years.

How could we build something like that?

Well, the answer is, we wouldn't. Just as primitive man orignally
FOUND and TENDED fire before he knew how to MAKE fire - so too we can
imagine future man finding and tending CTLs.

Are there any prospective CTLs around? You know, large massive
objects that are thousands if not MILLIONS of SOLAR MASSES spinning at
the speed of light??

SURE!

http://en.wikipedia.org/wiki/Supermassive_black_hole

And there's one already conveniently located at the center of our own
Milky Way galaxy and its been there BILLIONS of years!

So, we fly there map out the the CTLs (causal time loops) that allow
us to travel into the past - and then use it as a grand central
station for the galaxy an environs.

SO, here's how it would work.

You hop aboard your 10 mega-gee starship that uses vacuum decay to
create exploding miniature black holes that accelerate everything
around the ship evenly.

http://www.calphysics.org/articles/Forward1984.pdf

TO avoid free fall you do a trick that Bob Forward taught me to make a
neutrino rocket. You accelerate current of charged particles to
produce a 1 gee acceleration, and let them decay into massless
particles like neutrinos. The neutrinos explode in all directions
relative to their high speed frame, but they are preferentially
directed toward the direction of motion of the current in the ship
frame - creating a rocket effect.

http://www.robertforward.com/Fast_Forward_Fifty_Years.htm

So, you have two thrusters. One the mega-thruster for interstellar
hops, and the other the environmental-thruster to maintain 1 gee - or
whatever is convenient aboard ship. Since neutrinos penetrate
anything, your ion rocket can be deep inside your ship, if the
particles decay rapidly enough.

So, you hop on your 10 mega gee starship and hop to the center of the
galaxy after sending your automated flignt plan to star-central. You
spend a minute aboard ship hopping to the center of the galaxy, and
then travel back in time to a pre-computed point in time some 30,000
years in the past, and spend another minute travelling to your
destination - you emerge from the CTL so that as you arrive at your
destination, it is just 2 minutes after you left Earth - local time
earth inertial frame.

That is your ship time and Earth's inertial frame are always in synch
after a jump - courtesy of the super massive black hole. When its
time to return you send a signal to star-central again at the center
of the galaxy, and arrange a return trip arrivng just 2 minutes after
you left your destination - Earth inertial frame. This is if your
ship is registered to Earth. If you're registered to another star
system, your ship time is linked to that inertial frame.

The folks at star central have plenty of time to deal with your
signal, it arrives a full 2 minutes before you do, and it could even
be shunted back in time to anywhen to handle it. In fact Hans Moravec
has had some cool thoughts about how you'd use time loops to make
relly smart computing systems.

http://www.frc.ri.cmu.edu/~hpm/project.archive/general.articles/1991/TempComp.html

So, no worries about whether there will be any delays. There never
will be.

The cool part is it will take you 2 minutes to get anywhere in the
Milky Way. 3 minutes to anywhere in Andromeda.

You can send signals through time as well using the supermassive black
hole in the way I describe to shunt messages around. So, you can have
real time radio and video and data links with folks back home and a
type of super duper computing platform that got information through
time. Through a special setup you can even talk to yourself in the
future or that past. You can even MEET yourself in the future or the
past - although there may be some restrictions on this - either
imposed by law, or imposed by the law of nature - you might even be
able to travel to parallel dimensions in time - of the sort postulated
by Hugh Everett back in the 1950s.

http://plato.stanford.edu/entries/qm-manyworlds/

The world might be a VERY interesting place those who possess this
sort of technology - assuming it could ever be built.

The interesting thing is that if it ever WERE built - ANYWHERE and
ANYWHEN within this galaxy or neighboring galaxies, it would be
available to us HERE and NOW.

So, this is a restatement of Fermi's paradox - WHERE ARE THEY?

http://en.wikipedia.org/wiki/Fermi_paradox

..

This to my mind is pretty interesitng.

.

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