Recent content by Sharkey4123

Well I suppose he could have misjudged the size of the planets and sun. But where have you read he placed the sun fourth if you don't mind me asking?

Hi, After having a quick read through of his description of the geocentric model, the only reasonable conclusion that I would come to would be that he interpreted that particular order being the order of distance from the Earth. ie, the moon closest to Earth then the Sun, then Mercury, then...

First of all, you should be aware that unless you are an American citizen, you can't actually work for NASA. However, that does not mean that you can't work for other contractors, or alternatively ESA etc. I couldn't really comment on how good a career choice the course would be, but I would...

I'm not entirely sure I understand what the first question is. But in essence there will be some effect on the Earth's rotation by a plane traversing the globe. I'd even presume that as you walk across the surface of the Earth you are altering the angular momentum. But I think the key point is...

Ok, great! Thanks for the help kith and stevendaryl. I've created a couple of simple states for examples and played around with them and I think I'm getting to grips with it. I understand then that the trace of the square of the density operator tells us about how "pure" the state is - ie if...

I'm having a little bit of trouble getting my head around the idea of the reduced density operator being used to tell us about the entanglement of a state. I understand that if you take the reduced density operator of any of the Bell states, you get a reduced density operator proportional to...

I've probably figured this out myself, but should this be of use to anyone I'll leave it here for reference, or someone can correct me. I believe that if I were to add a larger charge, there would simply be more ions/electrons (depending on the sign of the charge) attracted to within the Debye...

The debye length is the effective length over which electrostatic potential disturbances are "screened out" in a plasma. So if I drop a charged point particle in a plasma, then I expect after some Debye Length, D, from this point charge, I can see no difference between any other point in the...