Analysis of information sources in references of the Wikipedia article "List of German inventions and discoveries" in English language version.
... But the first person to use this property to produce a photographic image was German physicist Johann Heinrich Schulze. In 1727, Schulze made a paste of silver nitrate and chalk, placed the mixture in a glass bottle, and wrapped the bottle in ...
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: CS1 maint: others (link)..His great work was the Grundriss der Mineralogie (Eng. trans. Treatise on Mineralogy
Thus he became the inventor of the air-pump (1650). He illustrated his discovery before the emperor Ferdinand III. at the imperial diet which assembled at Regensburg in 1654, by the experiment of the "Magdeburg hemispheres."
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