A charged particle that is accelerating emits radiation. Through the study of electrodynamics we often encounter moving charged particles without considering the issues of radiation. For example, the energy of a collection of charges may be calculated in part by solving for the energy involved in bringing those charges together from infinity. Radiation that they […]
Why Not to Use Aluminum in Your Langmuir Probes
I have made a fair number of Langmuir probes during the time I have been running experiments for my thesis. Some of the plasma facing material is aluminum, which I used because it was easy enough to machine that I could do it myself. The benefit of being able to do this myself is that […]
Electrostatic Potential with Spherical Boundary Conditions
One of the many mathematical techniques that are useful in the study of electrostatics is called the separation of variables method. This topic covers the application of this method to a situation in which the electrostatic potential in a spherically symmetric system is known. In such a system, the potential (potential and electrostatic potential are […]
LaTeX integration alone makes me wish I had moved to WordPress a long time ago. It is so easy to use, and with no effort on my part.
Magnetic Field from a Cylinder’s Magnetization
It is not intuitively obvious how an object’s magnetization relates to the magnetic field it generates. To develop a better physical picture of this phenomena consider an object with a given magnetization and then solve for the resulting magnetic field, B. A cylinder of radius, R, and length, L, in which R << L (i.e. […]
Seen in the wild; I didn’t realize that the mascot of Oak Ridge National Laboratory is the monkey. They should include this happy little monkey on their homepage.