In 1895, Wilhelm Röntgen discovered X-rays while experimenting ... radium, Ernest Rutherford, alpha rays, beta rays, gamma rays, radioactive decay, half-life, atomic structure Email us at footage ...

discovered gamma radiation in 1900, while studying radiation emitted from radium. Alpha and beta "rays" had already been separated and named by the work of Ernest Rutherford in 1899, and in 1903 ...

Ernest Rutherford's family emigrated from England ... the electron), and Thomson encouraged him to study recently-discovered x-rays. Early on he found that all known radioactive elements emit ...