Google is running a doodle celebrating Louis Daguerre, a French inventor and photographer who developed the process of daguerreotype, the first commercially viable and successful photography process.
He developed the process working with Nicéphore Niépce, the creator of the first permanent photograph technique.
Daguerreotype produced only one photograph which was not easily copied, but it was very popular for several decades in the 19th century, particularly for the quality of the photographs it created.
The first humans ever photographed were with the daguerreotype process. Advances in exposure times would make it a popular technique for portraits in later years and that's what it was mostly used for.
The Google doodle aims to imitate the look of a daguerreotype photo, with a family portrait of the Google letters, dressed in period attire.