Recent content by curiousOne

Right, I understand that, but following the clear argument of anomaly cancellation, that gravity never 'lags' behind any moving object then surely, I should be able to determine exactly where the object is, even inside the horizon. Perhaps someone should point me to some nice textbook on the...

By this you must mean that the position of the object has to become hidden because of Heisenberg's uncertainty principle right ? I understand the exact time it meets the singularity must also appear to be 'never' from the point of view of outside the horizon, but using the 'anomaly...

Thanks. That provides much needed clarification. So, observing how the object that falls into the black hole alters the black hole's gravity should be possible ?

Great. So how does gravity reach the horizon to cause the horizon?

Why can't the observer get the information back by watching the gravity field outside the black hole ? Either gravity travels at the speed of light or it doesn't. Assuming it doesn't: Can someone explain why information is lost ? I think, any observer outside the horizon will be able to detect...

Correction: The sum of 0 + q + q^2 + q^3 ... is (1/1-q)) so the sum of this is: $7 * (1/(1-10/16)) which comes to: $7*2.6666 = $18.666 Over time, counting the fact you will lose $12 every time (because we keep rolling until we lose them) you will $18.66-$12 = $6.66 Of course, this doesn't...

Ah, I don't think the answer posted really addresses the question. I'm not questioning the math, just the postulates. It's pretty obvious that the posted wants to know the odds of breaking even on craps place bets. WizardOfOdds answers this partially, but again doesn't fully examine the...

Great, thanks for all who replied. It certainly sounds like the best explanation. However, questions remain: 1- Is this confirmed by observation ? For instance is the spectra of distant galaxies indicative of the lighter elements bias ? 2- How about the time it takes for expelled...

I'm always perplexed by the numbers I see on estimates of the age of the universe and the age of our solar system. Somehow, I don't see it adding up. Here's my logic, plese point out the flaw: 1- Current estimate of the age of the universe : 13.73 billion years give or take. (when I was in...

Thanks for the replies. That was very informative. Now a related question: With a large sample, across a horizon, I think the decay pdf would change dramatically, so the exponential law should fail outside the horizon, but not inside, i.e. the half life would take on different values across...

Does the half life of a particular radioactive decay change if the sample is accelerated close to the speed of light ? Didn't Hawking answer that question in the 1980's ? Shouldn't the half life itself change over time ? (since the normal pdf is the one with the most entropy of information and...

Ok, I know DELL sells these really expensive DC to DC 'adapters' that can run my laptop. I can also run it from a DC to AC converter and plug my charger into that. But obviously, wouldn't it be simply a matter of having the right cable ? I'm just wondering what that DELL cable really does...

Is anyone familiar with Multigrid or Conjugate Gradient methods ?

For a sparse system of linear equations I think it's using Pre-conditioned Conjugate Gradient or Multigrid methods. For non-sparse and non-linear systems then I'm not sure. J.D.

Hey everyone, When solving Navier Stokes equations for simulation, one usually has to make the velocity field divergence free and solve a sparse linear system of equations. The Poisson equation that results is usually solved using either a Pre conditioned CG method or a Multigrid method...