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Funlearninguniverse
Joe Ferrara
24 soi sutjarit 1 Paknam
Krabi, Muang Krabi, 81000
THAILAND
Tell Me Why, How, When! Wednesday, February 4, 2009. An early improvement in the X-ray tube was the introduction of a curved cathode to focus the beam of electrons on a heavy-metal target, called the anticathode, or anode. This type generates harder rays of shorter wavelengths and of greater energy than those produced by the original Crookes tube, but the operation of such tubes is erratic because the X-ray production depends on the gas pressure within the tube.
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