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Anders Sandberg writes:
What was the original point?
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Anders Sandberg writes:
>Jonathan Reeves =
<JonathanR@mail.iclshelpdesks.com> writes:
>> The energy needed to accelerate it from =
it's _starting_ point increases,
>> but not the energy it needs to accelerate =
itself.
>> An object/vessel which is capable of =
generating it's own thrust will not
>> need to output more power to maintain a =
constant acceleration the
>> further it gets from it's origin.
> True. But an observer sitting at the origin =
will not see it pass c,
> and neither will any other observer moving in =
an intertial frame with
> a relative velocity to the origin less than c. =
A spaceship
> accelerating at constant acceleration (as =
measured by the crew) will
> describe a hyperbolic path in a Loretnz =
diagram; it will never break
> c.
Exactly. It will never appear to pass c =
(either in the original inertial frame or in a Lorentz diagram), but =
this does not mean it is not travelling ftl relative to it's start =
point.
What was the original point?