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Blaise Pascal's barrel experiment.
UMG23A64_061

Blaise Pascal's barrel experiment.

Alexander Graham Bell Experimenting
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Alexander Graham Bell Experimenting

Test Tube Frankenstein
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Test Tube Frankenstein

Engineer sergey zhizhkin experimenting with a new spacesuit at a recently de-classified aerospace facility, 1992.
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Engineer sergey zhizhkin experimenting with a new ...

Ivan pavlov (second from right) in his laboratory, operating on one of his dogs.
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Ivan pavlov (second from right) in his laboratory,...

Coolidge X-Ray Tube Inventor
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Coolidge X-Ray Tube Inventor

Coolidge X-Ray Tube Inventor
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Coolidge X-Ray Tube Inventor

Aerocartograph Mapping
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Aerocartograph Mapping

Lipoid Addiction Treatment
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Lipoid Addiction Treatment

Scientist Auguste Forel
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Scientist Auguste Forel

Copenhagen Serum Institute
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Copenhagen Serum Institute