April 17, 2025 – X-rays were so named because this radiant energy was of unknown origin. The “X” in “X-ray” was a scientific symbol for “the unknown.” Discovered by Wilhelm Roentgen in 1895, X-rays were immediately put into practical medical use the following year.The new technology came to Grand Forks in 1896, when Dr. John E. Engstad secured an X-ray machine, using it tha...
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