Re: superhero space navigation

On 2008-04-10, Eivind Kjorstad <eivindorama@[EMAIL PROTECTED]
> wrote:
> Just hook up one of them things that create electricity from the
> heat of some radioactive substance with a significant half-life, and
> connect the electricity to a flashlight of some sort pointing
> backwards.

Simpler and probably more efficient: just put the substance at the
back with shielding in front of it.  Decay products that go forward
get stopped by the shielding with no net momentum change.  Decay
products that go backward serve as exhaust.


> That's not going to give you anything in the neighbourhood of 1G though.

Still true.


- Tim