Discoveries and contributions to the atomic theory
Henri Becquerel is most known for discovering radioactivity.
His primary experiment involved working with numerous florescent minerals. Originally, Becquerel was investigating the different properties of uranium-bearing crystals by wrapping some photographic film inside light proof paper, and then placing the crystals on top off the film. After many hours of the crystals sitting in the sunlight, Becquerel placed a single crystal on a photographic plate. As he hypothesized, a light image was produced on the plate from the crystal due to the absorbed sun energy being released on to the plate in the form of x-rays. Later that day, Becquerel placed the experiment inside a drawer.
When he opened it up days later, he was surprised to discover that the crystal had left a dark, clear image on the photographic plate.
Henri Becquerel is most known for discovering radioactivity.
His primary experiment involved working with numerous florescent minerals. Originally, Becquerel was investigating the different properties of uranium-bearing crystals by wrapping some photographic film inside light proof paper, and then placing the crystals on top off the film. After many hours of the crystals sitting in the sunlight, Becquerel placed a single crystal on a photographic plate. As he hypothesized, a light image was produced on the plate from the crystal due to the absorbed sun energy being released on to the plate in the form of x-rays. Later that day, Becquerel placed the experiment inside a drawer.
When he opened it up days later, he was surprised to discover that the crystal had left a dark, clear image on the photographic plate.