Natural Science Forum / Physics / Electromagnetism / May 2004

I am currently reading "The Classical Electromagnetic Field" by
Leonard Eyges (Dover 1980), in my spare time. In this book, there are
several points that need to be clarified to me. I will return with
several posts asking about separate issues. I am grateful for all

Yesterday I stumbled on the following problem.
Take two electrons moving side by side at high speed,  that push each other
away at low speed until they hit a target where their lateral deflection is
measured. An easy way to calculate their repulsion is with SRT:

This is the best place for discussion about some Quantum theories like
Quantum Electrodynamics(QED), Quantum Chromodynamics(QCD), Quantum
Field Theories(QFT), Loop Quantum Gravity(LQG) and some other new
theories in theoretical high energy physics(hep) like Superstring

Why the Extra High Tension Power Supply has such a high internal
resistance?
Thank you very much for your help!

Hello, World,
  I am a student and I've got a problem, which I've been trying to
solve for some time, but without success. It is a problem from the
textbook (college-level electrostatics) I am currently working with. I

i am wondering about the source of higher harmonics in the cycltron
emission spectrum. i have started with the spectral power density (as
given, for instance, in hutchinson's "principles of plasma
diagnostics") and showed that for an observer on the axis of the

What is the origin of earth's magnetic field?
Searching in google i found some answers to this question
but they have some problems. see some of then:
answer1: