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Discovery of cosmic rays
In 1912, Austrian physicist Victor Hess (1883-1964) conducted an experiment to measure the atmospheric ionization rate. He ascended in a hot air balloon with scientific instruments, taking measurements at different altitudes. He discovered that as altitude increased, the intensity detected by the instruments also increased. Based on this observation, he concluded that a highly penetrating type of radiation was entering the atmosphere from above—what later became known as cosmic rays. This groundbreaking discovery earned Hess the Nobel Prize in Physics in 1936.
更新時間：2025-03-04 14:49