Some of the fascinating things we did with the radioactive element, including using it as a "wonderful" nightlight, since it "glows with a weird light in a dark room." Radium was discovered by Marie ...

Two years ago a ‘radium clock’ was constructed for the Chicago Radium Institute similar to the original one described by Strutt (Phil. Mag., 1903). Three milligrams of radium sulphate, contained in a ...

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Outside Chicago and just past Joliet, in the tiny town of Ottawa, Ill., Chicago's Radium Dial Company was a lucrative employer of women factory workers in the 1920s and 1930. Housed in a former high ...

No special difficulty has been experienced in showing that the β particles (electrons), expelled from radium, carry with them a negative charge of electricity. The positive charge left behind on the ...