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Johann Heinrich Schulze ou Schultz, (Colbitz, 12 de maio de 1687 – Halle an der Saale, 10 de outubro de 1744) foi um professor e polímata alemão. [1] Schulze estudou medicina, química, filosofia e teologia, tornando-se professor de anatomia, dentre outros assuntos, na Universidade de Halle e na Universidade de Altdorf.
Johann Heinrich Schulze (12 May 1687 – 10 October 1744) was a German professor and polymath . History. Schulze studied medicine, chemistry, philosophy and theology and became a professor in Altdorf and Halle for anatomy and several other subjects. Notable discoveries.
3 de ago. de 2021 · O cientista alemão Johann Heinrich Schulze conduziu os primeiros experimentos com produtos químicos fotossensíveis em 1727, provando que os sais de prata eram sensíveis à luz. Johann Heinrich Schulze e uma câmera escura. Os primeiros fotógrafos.
…the German professor of anatomy Johann Heinrich Schulze proved that the darkening of silver salts, a phenomenon known since the 16th century and possibly earlier, was caused by light and not heat. He demonstrated the fact by using sunlight to record words on the salts, but he made no attempt…
Learn how a German anatomist and chemist discovered in 1727 that silver chloride darkens in the light and laid the foundation of photography. See his illustration and the history of alchemical experiments with silver salts.
4 de jul. de 2010 · In the 1720s German physicist and medical professor Johann Heinrich Schulze baked silver nitrate in an oven to show that light, not heat, caused this discoloration. Schulze also put stencils of texts on glass jars filled with a mixture of chalk and silver nitrate.
Johann Heinrich Schulze. 1687-1744. German physician and anatomy professor who made a significant discovery in the development of photography when he observed that silver salts darkened when exposed to sunlight. In 1725, while attempting to create a phosphorescent material by combining chalk with nitric acid containing dissolved silver, Schulze ...
