X-radiation was discovered when Roentgen was working with a Crookes tube
Indicate whether the statement is true or false
TRUE
Explanation: Roentgen discovered x-radiation while working with a Crookes tube (named after William Crookes, an English chemist). The Coolidge tube is named after William David Coolidge who, while working for General Electric Company, introduced the hot cathode tube that allowed x-ray output to be predetermined and accurately controlled.
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