How are photographs are developed?

In a darkroom or developing machine.

Film is developed in a light tight bag or room and developed with three chemicals and water: developer, water, fix, hypo, and wash, with times dependent on the type of film. When your negatives are...

Film and photos are developed in a darkroom.

Daguerre a french doctor, painter and set designer invented in 1839 the "daguerreotype". Photographs on silvered coppered plates.

First geographic image developed. It's unclear what you mean by "geographic image." Joseph Nicephore Niepce created the first permanent photograph in the summer of 1826. He called the process...