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Created by the Georgia Institute of Technology, this is an animation of carrier flow in a intrinsic semiconductor. The video runs 00:15 seconds in length and is available free for download.

This web site, hosted by Gateway Technical College, houses several learning objects and lectures using Flash animations and Camtasia videos in the following electronics topic areas: DC/AC circuits, digital electronics, electronic devices, transistor fundamentals, op amp fundamentals, electronic...

"Powers of Ten", the film made by Charles and Ray Eames in 1977, takes the viewer from the core of an atom to the edge of the universe, moving 10 times further every 10 seconds. The film is about scale and how we view the universe and our place in it. Powers of Ten is an extremely valuable tool for...

The Materials Science and Technology Teacher's Workshop (MAST) provides this experiment as an introduction to the physical properties of polymeric chains. The lesson involves using pop-beads to represent polymeric chains. Several video clips are included along with a step-by step procedure for the...

This collection of classroom activities from the Howard Hughes Medical Institute is a useful stop for biology educators teaching topics such as stem cells, viruses, evolution, biodiversity, heredity, and molecular biology. Each activity accompanies a particular HHMI lecture series, all of which can...

This video clip provides a glimpse into the product formation cycle at Genentech, usually acknowledged as the first biotechnology company. In 1976, Herbert Boyer and Robert Swanson started Genentech which became a publicly traded company in 1980. For their first product, the company used recombinant...

This website from iBiology includes a number videos on a variety of biology topics. Video topics include biochemistry, bioengineering, biophysics, cell biology, development and stem cells, ecology, evolution, genetics and gene regulation, human disease, immunology, microbiology, neuroscience, plant...

This lecture from the iBioSeminars project, presented by Nevan Krogan of the Department of Cellular and Molecular Pharmacology at UC-San Francisco, covers mass spectrometry and its application to molecular biology. Mass spectrometry is a powerful tool for elucidating the elemental composition of a...

This lecture from the iBioSeminars project is presented by Eva Nogales Molecular Cell Biology Professor at the University of California, Berkeley, and it covers Visualizing Biological Structure Using Electron Microscopy: From Molecules to Cells. Transmission electron microscopy (TEM) offers the...

This lecture from the iBioSeminars project is presented by Nico Stuurman, professor of cellular and molecular pharmacology at UC-San Francisco. Fluorescence is a physical phenomenon in which a compound absorbs light and re-emits this as light of a usually higher wavelength. Since the excitation...