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Johann Heinrich Schulze - Encyclopedia.com
- https://www.encyclopedia.com/science/encyclopedias-almanacs-transcripts-and-maps/johann-heinrich-schulze
- 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 noticed that sunlight turned the substance black.
Professor J. Schulze - How did Photography Change our World?
- https://40369719.weebly.com/professor-j-schulze.html
- Professor J. Schulze mixes chalk, nitric acid, and silver in a flask; notices darkening on side of flask exposed to sunlight. This event becomes the accidental creation of the first photo-sensitive compound. makes "sun pictures" by placing opaque objects on leather treated with silver nitrate; resulting images deteriorated rapidly, however, if displayed under light stronger than from …
Johann Heinrich Schulze | German physician | Britannica
- https://www.britannica.com/biography/Johann-Heinrich-Schulze
- In history of photography: Antecedents …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… Read More
History of Photography | Freestyle Photo & Imaging
- https://www.freestylephoto.biz/history-of-photography
- 1727 Professor J. Schulze: Professor J. Schulze mixes chalk, nitric acid, and silver in a flask; notices darkening on the side of the flask exposed to sunlight. This event becomes the accidental creation of the first photo-sensitive compound.
History of Photography Up to 1888 - ezinearticles.com
- https://ezinearticles.com/?History-of-Photography-Up-to-1888&id=2714501
- In 1727, Professor J. Schulze accidentally created the first photosensitive substance when he mixed chalk, nitric acid, and silver. He saw that when this compound was exposed to sunlight, it darkened. Some years later, in 1800, a man named Thomas …
History of Photography - LIFE ONE PHOTOGRAPHY
- https://lifeonephotography.weebly.com/history-of-photography.html
- Another man, who wasn't well-known, Professor J. Schulze, accidentally created a photographic image. He was experimenting something else, when he mixed chalk with nitric acid and silver, the sun beamed onto the mixture and it darkened. Years later, Thomas Wedgwood followed Schulze’s discovery and created an image that faded away very quickly.
Introduction to Photography - kefleck.stu.cofc.edu
- http://www.kefleck.stu.cofc.edu/homepage.htm
- Introduction to Photography In 1727, Professor J. Schulze mixed chalk, nitric acid, and silver in a flask and he noticed darkening on side of flask exposed to sunlight. With this accidental discovery, the first photo-sensitive compound was created. This creation started the beginning the of photography. Since then photography has evolved so much.
History of photography - Wikipedia
- https://en.wikipedia.org/wiki/History_of_photography
- The history of photography began in remote antiquity with the discovery of two critical principles: camera obscura image projection and the observation that some substances are visibly altered by exposure to light. There are no artifacts or descriptions that indicate any attempt to capture images with light sensitive materials prior to the 18th century. Around 1717, Johann Heinrich …
The History of and Impact of Photography on our World …
- https://artscolumbia.org/history-impact-photography-world-essay-42507/
- In 1727 the first photo-sensitive compound was discovered completely by accident by Professor J. Schulze. The mixture consisted chalk, nitric acid, and silver in a flask; and the professor noticed that the side of the flask exposed to sunlight, darkened. (Tom Ang:2001)After that many significant events
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