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Online Course
Massachusetts Institute of Technology

Mit: Open Course Ware: Resources: Video Demonstrations in Lasers and Optics

For Teachers 9th - 10th
Several demonstrations shown in a video lecture format, illustrate the theory and applications of lasers and optics.
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Handout
American Association of Physics Teachers

Com Padre Digital Library: Open Source Physics: Parallel Plate Capacitor

For Teachers 9th - 10th
A simulation investigating a parallel-plate capacitor which is charged by connecting one plate to the positive end of a battery, and the other plate to the negative end. The battery sends electrons from one capacitor plate to the other...