When was photography invented?

Today, with the development of science and technology, photography has become an indispensable mass entertainment activity in life. Every holiday, or the whole family, or good friends, go out with a camera, choose beautiful scenery and a happy smile, gently press the shutter, leaving a beautiful life memory.

But you know what? All this was unimaginable for people in the last century. At that time, people had to rely on the painter's pen to leave a fixed image.

It took a long time for human beings to understand the functions of light and shadow, and to record and reproduce them.

In ancient China, the research level in this field was ahead of other countries. As one of the theoretical foundations of the formation and development of modern photography technology, the principle of pinhole imaging was recorded as early as 2400 years ago in China's book Mo Jing during the Warring States Period. During the period of1661~1721,China was able to manufacture black boxes for painting or viewing with imaging lenses. Chen Wenshu in the Qing Dynasty had a vivid description of this: "A thousand-mile mirror placed on a square-box mirror can be photographed in one day and several miles away, which is lifelike." At the same time, someone abroad invented a camera box, which is very close to today's cameras. It can be seen that in the middle of17th century, the development of optical machinery has reached a considerable level, but the development of photography has temporarily stopped due to the backwardness of photosensitive chemistry.

/kloc-in the 0/8th century, people accidentally discovered the photosensitive characteristics of silver salt, but failed to connect it with photography, so the printed image of the experiment could not be saved and would soon disappear.

It was not until 1826 that human beings first combined black boxes with chemical photosensitive materials and really invented photography. This is the real beginning of photography history.