Thanks to Gregory Rech of Lawrence Berkeley National Laboratory and his collaborators, you can now use your Web browser to view the X-ray Spectrum of Elements on the Periodic Table. You can plot the fluorescent spectrum of each element or, if you prefer, the spectra of two elements simultaneously.
Bruce Irving of Optical Research Associates in Pasadena, California, has put together Optics for Kids, an educational Web site aimed at 6- to 11-year-olds. The site is structured around a series of questions, such as What’s cool about lasers? that lead to more detailed information elsewhere.
With more than 2.8 million freely available abstracts, NASA’s Astrophysics Data System is the largest noncommercial database of scientific literature in the world. And, thanks to a collaboration with the American Physical Society, ADS, which is hosted by the Harvard-Smithsonian Center for Astrophysics, has recently gotten even bigger. Its core collection of astronomical...
