Do you know when the world's first photo was taken? What was the content of the photo?

Functions that are now commonplace in cameras were actually unimaginable at first.

According to historical records, the first photo in human history was taken by French inventor Joseph Nicéphore Nièpce in his hometown of Le Gras in 1826.

Nièpce named it "Window At Le Gras", which means "you can leave beautiful memories without hand-painting".

Its principle is this: Nièpce has learned some basic geometry and physics knowledge, and his camera imaging process is similar to the black box principle.

The photo was taken in a large box with a tinfoil plate coated with asphalt.

After about 8 hours of exposure, the asphalt at the exposure location will harden and then be cleaned with petroleum and lavender oil, and an image will appear.

From today’s perspective, Nièpce’s work looks like it was taken with a 30-megapixel camera phone on a violently bumpy nighttime roller coaster. However, it is still the first photograph in human history. ——Real number one in the world.

Nièpce’s invention was not noticed by the Royal Society at first, and was considered to be just a creation under the sun. Bureaucrats finally handed the photos to botanists for processing, and Nièpce missed the opportunity to become famous.

About 50 years later, under the tracing of historian Helmut Gernsheim, this "Window At Le Gras" was rediscovered and was exhibited for the first time in London in 1898.

In September this year, this veteran in the photography world will meet the world again at the Mannheim Museum in Germany, telling people about the history of that period 186 years ago.