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National Academy of Sciences: Walter Elsasser
A complete biography of Elsasser's life and contributions to both biological science and earth science. Page also contains a photo of Elsasser. Site includes biographies of other famous scientists as well.
Science Struck
Science Struck: The Structure of an Atom: A Labeled Diagram
Looks at the scientists who developed the model of the atom by building on previous scientists' discoveries about its structure.
Open Curriculum
Open Curriculum: The Atom
Learn about atoms and their properties of motion with this illustrated article.