Hundreds of women and girls were exposed to a radioactive chemical at an Illinois factory in the 1920s. Years later, they helped change workplace safety standards. In the early 1900s, radium was all ...
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 ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results