This site provided by National Aeronautics and Space Administration contains an introduction to X-rays and their uses in medicine and astronomy. Descriptions of the first X-ray observations, how they are used to...

This page from then University of California, Los Angeles Galactic Center Group provides images of the galactic center over most of the electromagnetic spectrum. Each image has explanatory text, and a background section...

This is a non-mathematical overview of magnetism and the Earth's magnetic field, written for the 400th anniversary of William Gilbert's book "De Magnete". It includes discussions of electromagnetism, solar magnetism,...

This is a link to an abstract of the article. Users must login to view the entire article. The Foundation Coalition at Arizona State University offered for the first time a novel upper division integrated course in...

This website is from the US Environmental Protection Agency on Radiation Protection. It gives an overview of the basics including: Exposure to Gamma Radiation, Health Effects, and Protecting People from Gamma Radiation A...