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POPSPhysics Flash Animations The top links, go to the list of 90 Flash Animations with 'view' links. When the view link is pressed. an animation opens up a new tab There are a few direct links to an animation, at the bottom of the clip
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POPSInvisibilia I think this looks really cool. There's a tutorial and more pictures at the source.
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POPSStem cells explained: An interactive tutorial Short yet informative guide from the University of Michigan : on that much-ballyhooed research topic; stem cells. Illustrations accompanied by text and audio guide. A fairly neutral source from which you can school yourself before mouthing off. ;)
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POPSLong Exposure - (5 sec rule of thumb) "The scene: A place with a crowd of people, or a view with moving traffic, or a landscape with running or moving water. Dim lighting, or twilight/dusk, is best." "The equipment: A camera that allows you to manually set the exposure time, a tripod if appropriate for the location (otherwise, a way to hold the camera completely still), and a remote shutter release or timer (hands-off shutter firing)."