This web site contains a large collection of animations illustrating basic concepts in physics and astronomy. It covers topics in astronomy, mechanics, vectors, electricity and magnetism, optics, waves, and modern...

Authored by Paul Doherty, Pearl Tesler and Noel Wanner for Exploratorium, this site analyzes the physics of skateboarding in great detail. It goes into many different 'tricks' and the effect of materials and design on...

The Exploratorium's Solar Eclipse web page posts past solar eclipse dates, webcasts of these eclipses, and resources for understanding and viewing eclipses. Information on eclipses in Turkey, Greece, Zambia, Aruba and...

The steady-state characteristics of a synchronous motor represented by phasor diagrams are shown as function of the load P with the excitation voltage E kept constant.The power expression is P = I V cos(;) = E V sin(;) /...

Sustainability has become a popular buzzword in the past few years, yet it can be a puzzling term to some who encounter it. In the words of this American Public Media site, "it's about meeting the needs of the present...