Rocks and Minerals: How We Identify Them
Shows how common rocks and minerals can be identified by color, texture, hardness, streak and other standard procedures.
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Shows how common rocks and minerals can be identified by color, texture, hardness, streak and other standard procedures.
A film about viewing, vision and preservation made around unceremoniously manipulated diary entries of John Ruskin. Transmission might occur.
8mm films are shot at 18 or 24 frames per second and projected at the same speed. Some 8mm projectors are capable of slow-motion projection. The slower the projection speed, the more intermittent the image becomes, makin
American Museum of Natural History short film
Four and a half billion years ago, the young Earth was a hellish place-a seething chaos of meteorite impacts, volcanoes belching noxious gases, and lightning flashing through a thin, torrid...