Recent content by GarageDweller

Is it actually possible to calculate the probability of field states in QFT? For example the probability of some scalar field being found as some function f(x,t), i find this problem ignored in most texts.

My question is why light seems to fade so fast. Where does it go?edit: After reading the link you provided, I guess the waves are absorbed by the surrounding?

When we turn a light on a wave of high frequency EM waves are emitted, however as soon as we turn the light off the light fades. Why is this? If we were to do the same thing in a perfectly reflecting room (perhaps a spherical room with mirrors on the walls) will the same occur?

Bit confused regarding how non-inertial frames can be treated in GR (and by non-inertial i mean affected by some kind of four-force). Can anyone give a brief summary or link to some good sources?

Hello fellow PF go-ers I am having trouble with coordinates in curved space time lately, allow me to demonstrate my issue. Take the metric of flat space in spherical coordinates for example, a diagonal metric with values 1,r^2 and r^2sinΘ. It appears to me that only when we know that the Θ and...

How bout you pick up a book

Also, the drift velocity of an electron is meaningless in the context of QM.

The issue with talking about electrons in classical EM is that electrons themselves are not part of the theory, in th same way that one shouldn't talk about space time curvature in QM, one should not talk about electrons in classical EM

1.Switch to polar coordinates 2.Eliminate the angular coordinate by the conservation of angular momentum 3.Use above mentioned trick u=1/r to get a r(θ) solution. If you try to solve for r(t) you'll get a non elementary integral, feed it into mathematica if you're still interested.

Charge can be negative, and this is unavoidable, when you bring two point charges of opposite charge infitesimally close, you end up with no field, and hence no charge

But then what happens when I go and perform a position measurment on the electron?

The general public generally regards physics as magic, does it matter?

Wikipedia articles are horrible for learning anything, the terms they use are always taken out of context

Sounds like a steange way to go at it, why not just brute force integrate it with the free space green function?

It's easiest to just solve the poissons equation. Not sure what alternate method you are suggesting here. I thought you could only get the field on the symmetry axis without poissons?