05/05/2026
তাদের ঘুম ভাঙে জান্নাতের দরজায়..... ✊🔥
of Photography 💕🥰✍️
The history of photography began with the discovery of two important principles: the first was the projection of an opaque image by the camera, the second was the discovery that some substances are visibly changed by exposure to light[2]. There are no artifacts or descriptions indicating any attempts to take photographs with light-sensitive materials before the 18th century.
View from a window in Le Gras, 1826 or 1827, is thought to be the earliest surviving camera photograph. [1] Original (left) and color reproduction (right).
Around 1717, Johann Heinrich Schulz used a light-sensitive slurry to take photographs of cut-out letters on a bottle. However, he did not attempt to make these results permanent. Around 1800, Thomas Wedgwood made the first reliably documented, albeit unsuccessful, attempt to take photographs with a camera in permanent form. His experiments produced detailed photographs, but Wedgwood and his collaborator Humphry Davy could not find a way to fix these images. In 1826, Nicephore Niépce was the first to fix a photograph that had been taken with a camera, but this required exposures of at least eight hours or even days, and the initial results were very crude. Niépce's collaborator Louis Daguerre began developing the daguerreotype process, the first publicly announced and commercially viable photographic process. The daguerreotype required only a few minutes of exposure to the camera, and produced clear, finely detailed results. On August 2, 1839, Daguerre demonstrated the process at the Chamber of Peers in Paris. The technical details were published at a meeting of the Académie des Sciences and the Académie des Beaux-Arts at the Institute Palais on August 19. (To give the public the right to their discovery, Daguerre and Niépce were given generous annuities for life.)[3][4][5] When the metal-based daguerreotype process was officially demonstrated to the public, the competing methods of paper-based calotype negatives and salt priation were introduced.