Wondermagnet.com http://www.wondermagnet.com/
Images of magnets and their uses, experiments, a discussion board about magnet-related topics, and an elementary primer on magnetism and magnetic physics.
X-ray Optics and Microscopy at Stony Brook http://xray1.physics.sunysb.edu/
Research describing use of coherent soft X-rays for optics experiments, including Fresnel zone plates, to produce the smallest focused spot of electromagnetic waves for studies of biological and materials science specimens.