Dental and oral radiography : a text book for students and practitioners of dentistry (1916)
McCoy, James David · St. Louis : Mosby · leaf 27
e and in various substanceswithin it. Without doubt, Sir William Crookesunconsciously produced the x-ray in the courseof these experiments. In 1892 Prof. Heinrich Hertz discovered thatcathode rays would penetrate gold leaf and other 2-4 DENTAL AXD ORAL RADIOGRAPHY thin sheets of metal placed within… … Fig. 3. Sir William Crookes. outside of the Crookes tube. By closing a vacuumtube at the end opposite the cathode with a thinsheet of aluminum, he demonstrated that a radia-tion proceeded through or from the aluminumwalls of the tube which would pass through manysubstances opaque to ordinary light,…
Radiography, Dental · X-rays · Teeth · Mouth
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