Talbot's contribution to photography

Talbot's invention didn't win any prize, but it attracted public attention. After the invention was announced, Sir Herschel he knew made great contributions to the improvement of Talbot's photography in the future. Herschel is a very cultured astronomer. As early as 18 18, he found that low sulfurous acid in soda water can dissolve silver salt. When Talbot's invention was announced, he immediately told the whole story without reservation, and suggested using soda water instead of strong brine for fixing. This fixing technology has been used up to now, which can be said to be an epoch-making contribution.

In addition, Herschel was the founder of the terms "photography", "negative film" and "positive film". He called Talbot's black-and-white negative opposite to the camera a negative, called the normal image printed on another photosensitive paper a positive, and recorded the whole image with a camera, which was called photography.

When applying for a patent to the Queen, Talbot called his invention "Carlo Photography", and later people used to call it "Talbot Photography". Compared with the seemingly mature Daguerre silver plate method at that time, it was actually the end of the aisle. Only Talbot's photography method from negative to positive is the truly promising method. Unfortunately, in the 1940s from 65438 to 2009, not many people were clearly aware of this.