Recent content by Shawnyboy

Hi PF Peeps! Something came up while I was studying for my QM1 class. Basically we want to represent operators as matrices and in one case the matrix element is defined by the formula : <m'|m> = \frac{h}{2\pi}\sqrt{\frac{15}{4} - m(m+1)} \delta_{m',m+1} But the thing is we know m takes on...

Thank You! That's exactly what it is. That explains it perfectly, although a strange concept this "Compton Radius". I wonder how useful it actually could be. It seems very incorrect to think of an electron in this way.

Ah-hah! cgs! That at least explains the units, because according to wikipedia a Statcoulomb = erg^1/2 * cm^1/2. However it is still not entirely clear the motivation. I mean you can't just do something because the units work.

Hello Physics Peeps, It just came up in the notes for my electrodynamics class that an electrons charge squared can be expressed as the radius times the mass times the speed of light squared. e^2 = m_er_ec^2 I don't understand the motivation for doing this. I've tried to search for other...

I think it usually doesn't serve to think of conductors in terms of dielectric constants as the two things behave completely differently. What happens when you put a conductor between two charges is that the charges will pull the electrons in the conductor to the edge of the conductor (or push...

I'm new too. Whatsup?:)

Hello Physics Forums. I've been using the posts on this website to bolster my own knowledge so I figured I'd sign up. There's a lot of smart people here so I hope that I'll be able to contribute : ) For fun, respond with your favorite physics problem!:approve::approve::approve::approve::oldtongue: