Photographic darkrooms are essential because exposure to light can damage film or photographic paper before they are fully developed. Once we’re ready to develop photos, these materials are kept in sealed, light-proof containers. However, it’s not just light that can ruin film; some films are also sensitive to ionizing radiation. This was how Henri Becquerel stumbled upon radioactivity when uranium contaminated a photographic plate, even though it was stored in a dark environment.
Cosmic rays are similar to the radiation from uranium. They can penetrate materials and are often invisible to the naked eye. Recent studies show that cosmic rays are constantly bombarding Earth, with an estimated 1,000 particles passing through our bodies every square meter each second. This fascinating phenomenon blends art and science, as seen in modern experiments.
In one such experiment, Gabriel set up a medium-format digital camera in total darkness for a 41-minute exposure, hoping to capture evidence of cosmic rays. The results were striking and echoed Becquerel’s initial findings. While Becquerel was surprised by his results, Gabriel sought them out intentionally, demonstrating the evolution of scientific curiosity.
Interestingly, you don’t need advanced equipment to experiment. Using more common digital cameras or even film cameras, it’s possible to capture invisible phenomena. There have been DIY projects using basic UV cameras to visualize things like electrical arcs, illustrating how accessible and engaging science and art can be.
