1839: With a French pension in hand, Louis Daguerre reveals the secrets of making daguerreotypes to a waiting world. The pioneering photographic process is an instant hit.
Using chemical reactions to make images with light was not quite new. Doing it fast was. Inventor Joseph Nicéphore Niepce created a rough image using silver salts and a camera obscura, or “dark box,” in 1816. The image faded away quickly.