How To Use Crookes tube In A Sentence

• His stage of progress in knowledge was this, that during the discharge of _one_ kind of rays of force from the cathode pole in a Crookes tube _another kind_ of rays are set free, which differ totally in their nature and effects from anything hitherto known. Notable Events of the Nineteenth Century Great Deeds of Men and Nations and the Progress of the World
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• The best suggestion of how it came about it that he was investigating cathode rays with a fluorescent screen painted with barium platinocyanide and a Crookes tube wrapped in black cardboard so visible light from the tube wouldn't interfere. Google doodle celebrates 115 years of X-rays
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