The "advantage" regarding proliferation in the thorium cycle is that the 233U is mixed in with 232U, which decays into some species which emit some pretty mean gammas. That would wreak havoc with any electronic components or primer explosives in a putative bomb, and at one dalton difference in...
Let's elaborate on that point a bit more. All things travel through spacetime at the same speed, or more technically, everything's "four-velocity" -- that is, the velocity at which things move in the four-dimensional spacetime -- has the same magnitude.
Then, you say that you are told we are...
It would, which is why point particles don't exist in reality, but are simply abstractions so we can simplify our calculations.
Real particles are quantically "smeared" across a given volume of space, which makes their density finite, but you're better off asking about it in the quantum...
I see, so the numbers check out (to a significant figure) with coordinate acceleration of 1.5 g. Ok, that's probably what was meant, then. As for the laser, I definitely noticed this: As the ship accelerates, the lasers redshift from the ship's point of view and thus the energy hitting the...
Greetings,
I've been perusing the great site http://www.projectrho.com/rocket/index.php" , a fictional spaceship used in the movie Avatar.
In there, the ship is described to be accelerated by a bank of lasers and a light-sail at a constant 1.5 g acceleration for 0.46 year until they reach...
Apparently, yes. It has to do with Heisenberg uncertainty principle. I reproduced it here during another discussion; actually, it's the derivation for the quantization of time there, but from there you can conclude that a signal (which travels at c, always) cannot travel less than a Planck...
According to http://www.hpcc-space.de/publications/documents/ExtendedHeimTheory.pdf" paper by Dröscher, the derivation goes something like this:
First, consider a clock of length l and mass m. The Schrödinger relation says that the uncertainty in the measurement of the clock's time is...