What in the World Is That? - examines 16 inventions: the submarine, battery radio, cotton gin, reaper, electron microscope, telephone, gramophone, telecommunication cable, snow gauge, ornithopter, airphibian, & others.
Inventors
- Inventors - annotated list of invention-related links like Chinese Inventions, Famous Inventors, Black Inventors, and Women Inventors (About.com)
- Wyoming Inventors Database (Wyoming State Library)
- Inventors Museum - directory of inventors and inventions in categories like Colonial Inventors, Medical Inventions, and War Tech
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