Re: Space Travel

On 9 Mar, 23:19, BradGuth <bradg...@xxxxxxxxx> wrote:
On Feb 28, 6:48 am, "Blattus Slafaly £ ¥ 0/00 :)"





<boobooililili...@xxxxxxxxxxxxxx> wrote:
D. Orbitt wrote:
E=MC squared makes it unlikely a reaction-powered craft could
accellerate beyond "C" because the closer it approaches that speed,
the more mass it takes on, requiring more energy to accellerate it,
more fuel, and so on, in a loop, so you could (eventually) get
incredibly close to C with a reaction motor, assuming you had nearly
infinite power  and reacton mass to run your motor, but like zeno's
paradox in philosophy, you can never quite get there, just slice up
smaller and smaller segments of "nearly there".

FTL would require some kind of mathematics and physics where you could
"throw away" the increasing mass somehow.  Perhaps when we truly
understand gravity, a way may be found, but I'm not optimistic about
that.

This had never been proved in reality. It's just a theory. There could
in fact be no problem going faster than light.

--
Blattus Slafaly  ? 3     :)  7/8

Two laser beams either back to back or pointed directly at one another
is a measured differential velocity of 2X 'c'.  So, I'd agree that FTL
is doable.
. - Brad Guth- Hide quoted text -

- Show quoted text -

No no no no no! In Special Relativity there are the Lorentz
Transformation equations. These effectively say that light always
travells isotropically (in all directions) at c and that in a closedd
box there is no way to tell how fast you are going.

A neater way of writing the Lorentz equations is to put them in matrix
for. A velocity transforms X into UX where

UU^-1 = I the identity matrix. This allows an expression in
trigonometrical form.

If X is an FTL velocity (dx/dt >c) we get the paradoxes I have spoken
of earlier. UU^-1 in fact scales c to = 1. c = 1 is a lot neater.


- Ian Parker
.

Relevant Pages

  • Re: Space Travel
    ... accellerate beyond "C" because the closer it approaches that speed, ... the more mass it takes on, requiring more energy to accellerate it, ... places in half the original laser established waveguide time of 'c'. ...
    (sci.space.policy)
  • Re: Y.O.O the "self proclaimed GR expert". (ABSOLUTELY no help)
    ... A particle accellerated by it's own energy will follow my reasoning. ... Surely a body that is accelerating is gaining mass, ... Our mass cannot *ACCELLERATE* at all, ... This "Rest Mass", reaches 0, and yet still has 0.5KgC^2 of energy. ...
    (talk.origins)
  • Re: Y.O.O the "self proclaimed GR expert". (ABSOLUTELY no help)
    ... A particle accellerated by it's own energy will follow my reasoning. ... Surely a body that is accelerating is gaining mass, ... Our mass cannot *ACCELLERATE* at all, ... This "Rest Mass", reaches 0, and yet still has 0.5KgC^2 of energy. ...
    (talk.origins)
  • Re: Space Travel
    ... accellerate beyond "C" because the closer it approaches that speed, ... the more mass it takes on, requiring more energy to accellerate it, ... places in half the original laser established waveguide time of 'c'. ...
    (sci.space.policy)
  • Re: Space Travel
    ... accellerate beyond "C" because the closer it approaches that speed, ... the more mass it takes on, requiring more energy to accellerate it, ... In Special Relativity there are the Lorentz ...
    (sci.space.policy)