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Photograph of the first two cyclotron models designed by Ernest Lawrence

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Photograph of the first two cyclotron models desig...

The United States Naval Observatory, Washington

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The United States Naval Observatory, Washington

Albert A

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Albert A

Scientific American illustration of the Flying Bedstead

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Scientific American illustration of the Flying Bed...

A milking machine invented by Edward M

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A milking machine invented by Edward M

Albert A

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Albert A

President Theodore Roosevelt

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President Theodore Roosevelt

Prize offered in Scientific American

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Prize offered in Scientific American

Sir Ernest Shackleton's new Antarctic Expedition

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Sir Ernest Shackleton's new Antarctic Expedition

Scientific American cover

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Scientific American cover

Boy being examinated by Louis Pasteur

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Boy being examinated by Louis Pasteur

J. Robert Oppenheimer

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J. Robert Oppenheimer

J. Robert Oppenheimer with General Leslie Groves

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J. Robert Oppenheimer with General Leslie Groves

James Curtis Booth

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James Curtis Booth

Theodor Billroth

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Theodor Billroth

Rudolph Virchow

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Rudolph Virchow

Smith & Wesson's revolver factory

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Smith & Wesson's revolver factory

Bell Telephone Company

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Bell Telephone Company

Charles Francis Brush

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Charles Francis Brush

James Curtis Booth

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James Curtis Booth

Thomas Henry Huxley

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Thomas Henry Huxley

Planchette or Ouija board

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Planchette or Ouija board

Vacuum apparatus used to exhaust Edison incandescent light bulbs

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Vacuum apparatus used to exhaust Edison incandesce...

Sonia

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Sonia

James Watt's workshop at Heathfield Hall

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James Watt's workshop at Heathfield Hall

Edison generator for electric light at Menlo Park

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Edison generator for electric light at Menlo Park

Edison's improved form of JW Trowbridge's electric dynamometer

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Edison's improved form of JW Trowbridge's electri...

Advertisement for Edison Phonograph cylinder recordings

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Advertisement for Edison Phonograph cylinder recor...

Idea American landscape during the Jurassic epoch

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Idea American landscape during the Jurassic epoch

Jean Martin CHARCOT

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Jean Martin CHARCOT

Edison's carbon filament lamp

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Edison's carbon filament lamp

Artist's impression of execution by electric chair

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Artist's impression of execution by electric chair

Model of skull of Piltdown man

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Model of skull of Piltdown man

George Ellery Hale (1868-1938) Astronome américain

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George Ellery Hale (1868-1938) Astronome américain

S.P. Langley (1834-1906), astronome et pionnier americain de l'aeronautique a bord de son avion a vapeur baptise "Aerodrome"

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S.P. Langley (1834-1906), astronome et pionnier am...

Alberto Santos-Dumont (1873-1932), pionnier bresilien de l'aviation, le 19 octobre 1901

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Alberto Santos-Dumont (1873-1932), pionnier bresil...

Defile a New York presentant les lampes a incandescence inventees par Edison

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Defile a New York presentant les lampes a incandes...

Le multicycle a usage militaire invente par Singer & Co.

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Le multicycle a usage militaire invente par Singer...

Pont suspendu de Brooklyn, New York

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Pont suspendu de Brooklyn, New York