The world's first camera was invented in 1839. The French Daguerre made the first practical silver camera, which consisted of two wooden cases. Insert a wooden box into another box to focus, use the lens cover as the shutter, and control the exposure time for up to 30 minutes, so that a clear image can be taken.
1839, French painter Daguerre accidentally discovered that the metal plate treated with iodine has photosensitivity, which inspired him to invent photosensitive materials. Later, he discovered the phenomenon of negative film development through mercury evaporation, thus solving the development problem. Later, he solved the fixed problem. There is no doubt that Daguerre was the inventor of the camera.
The invention story of the camera:
Once, he accidentally put a silver spoon on a metal plate coated with iodine. When he picked it up, he found that the image of the silver spoon was left on the metal plate. This surprised him deeply. He thought there must be some connection between the metal plate, iodine and silver spoon. After repeated experiments, he invented a photographic method: first, silver was plated on the copper plate, and then photosensitive with iodine vapor to form a layer of silver iodide on the copper plate.
Then take pictures with special lenses. However, the photos taken by this method only have some blurred images, which have not achieved the ideal effect. Later, he found that mercury vapor can develop negative films. Soon, Daguerre invented a convenient developing method, combined with the fixing technology at that time and the applicable photosensitive materials, and made the original camera.