How Kodak found out about the atom bomb

https://www.photographytalk.com/photography-articles/7951-how-the-photography-industry-exposed-the-atomic-bomb

Back in the late 1940s, Kodak customers began to lodge complaints that the film they purchased was bad.

Why?

Because the radiosensitive film was coming out completely foggy.

Little did Kodak customers know at the time, but the foggy film was a direct result of fallout from the U.S. government's atomic bomb tests - the Trinity Test in particular - in New Mexico in 1945.