In 1953, Gottfried Moellenstedt invented the electron biprism, more or less by accident, with the serendipity characteristic to him: Aiming at dark-field imaging in an electron microscope, he stretched a thin tungsten...

The College Board has developed the "AP Central" website to provide resources for teachers seeking to improve their students' performance on AP exams, including human geography, chemistry, and European history. This...

The Atomic Orbitals website is a distribution point for the orbital image generating program "Orbital Viewer" as well as the home of a collection of images generated with the program. Atomic and molecular orbitals are...

This is the website of the "Cornell Electron Storage Ring" (CESR), a high-luminosity 6+6 GeV electron-positron collider at the Wilson Synchrotron Laboratory, Cornell University. Highlights of the site include a...

This is arguably the tastiest way to design and learn about electronic circuits: make circuitry snacks! Two of Evil Mad Scientist favorite things in the world are playing with electronics and playing with food, and so it...