‘observation’ historical pictures (exact matches)
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Claudius Ptolemy, Greco-Roman astronomer and mathematician and geographer
In 1911, Lt Giulip Gavotti became the first man to drop a bomb from a plane
Discovering Our Cities: The Marvel of the Mersey (Liverpool). Jeremiah Horrocks.
Il Presidente della Repubblica Francese alla fronte italiana
Observation balloon ascending, World War I
View of Aziscohos and Observatory Mountain, with Rangeley Lake in Maine in the foreground
French Republic. Freedom – Equality – Fraternity.
Leningrad. Autumn of 1941. At an Observation Post.
Mechanics: Atwood's machine with pulleys and calibrated dials, for measuring force
Marcello Malpighi, De pulmonibus observation
Navy Scout Observation Plane Spotting Fire of Big Guns, Anguar Invasion
Sir Isaac Newton sees an apple fall
Conservation of rotten boroughs, & preservation of plebeian limbs very different
Elevation of the Belmont Menagerie, Newport, Rhode Island
A Day at the Observatory on the Summit of Ben Nevis
Erasistratus, a physician, realising that Antiochus's (son of Seleucus I) illness is lovesickness for his stepmother …
Bulletin de la Société belge d'astronomie
Ornatus Muliebris Anglicanus (The Clothing of English Women)