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The biplane Farman before a take off in the April 1909
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The biplane Farman before a take off in the April ...

A WEEKLY JOURNAL OF PRACTICAL INFORMATION ART SCIENCE MECHANICS CHEMISTRY AND MANUFACTURES. General View of the Completed Telescope. THE GREAT TELESCOPE OF THE PARIS EXPOSITION OF 1900[See page 298. [...
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A WEEKLY JOURNAL OF PRACTICAL INFORMATION ART SCIE...

Template for a rotating disk to turn the whole surface into gray color. Circles with alternating black and white segments.
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Template for a rotating disk to turn the whole sur...

Blivet, impossible trident, a kind of optical illusion. Impossible object and undecipherable figure. Also impossible fork and devils tuning fork.
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Blivet, impossible trident, a kind of optical illu...

Shadow of Young Woman Aligning a Pinhole Camera capturing the Sun's Crescent during the Solar Eclipse on August 21, 2017
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Shadow of Young Woman Aligning a Pinhole Camera ca...

Pascal, Blaise (1623-1662). French mathematician, physicist and philosopher. Measuring the air pressure. Colored engraving.
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Pascal, Blaise (1623-1662). French mathematician, ...

A very early printed photograph of BBC's Studio used for broadcasting concerts and musical shows. The BBC began daily radio services in London in the 1920s on the radio station 2LO. Under the genera...
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A very early printed photograph of BBC's Studio us...

Shadows on Mars (NASA, Mars, 2012)
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Shadows on Mars (NASA, Mars, 2012)

Curiosity's Travels Through Sol 56 This map shows the route driven by NASA's Mars rover Curiosity
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Curiosity's Travels Through Sol 56 This map shows ...

Louis Pasteur, French Chemist and Bacteriologist
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Louis Pasteur, French Chemist and Bacteriologist

Louis Pasteur, French Chemist and Bacteriologist
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Louis Pasteur, French Chemist and Bacteriologist

Edward Jenner Vaccinating Child, c.1796
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Edward Jenner Vaccinating Child, c.1796

Edward Jenner Vaccinating Child, 1796
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Edward Jenner Vaccinating Child, 1796

Louis Pasteur (1822-1895) French chemist, in his laboratory at the Ecole Normale, Paris, during his work on hydrophobia. Around him are cages full of the rabbits he used during his experiments. From...
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Louis Pasteur (1822-1895) French chemist, in his l...