The Coolidge X-ray
Time: 1913
Place: U.S.
Details: The Coolidge X-ray tube was invented by William D. Coolidge. It made possible the continuous emissions of X-rays. Modern X-ray tubes are based on this design, often employing the use of rotating targets which allow for significantly higher heat dissipation than static targets, further allowing higher quantity X-ray output for use in high powered applications such as rotational CT scanners.
Best-effort ordering. Some events may appear out of order since many are only known to the year, but they are usually around the same period.
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