Radiometric dating earth science

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discovered that a lump of radium mineral that he carried around in his pocket burned his skin.But it was the young Polish scientist Marie Curie and her French husband Pierre who made a study of these strange 'Becquerel rays'.He tried to placate Kelvin by portraying the old man's prophetic and prescient disclaimer as the hallmark of a very great scientist -'that prophetic utterance refers to what we are now considering tonight, radium!

Sir Joseph John Thomson, 1856-1940, Nobel prize-winning (1906) British physicist who discovered the electron, thus opening up the study of atomic structure, Cambridge-trained and became Cavendish professor there (1884-1919) and made the laboratory world-famous.However, it was a brilliant New Zealander, Ernest Rutherford, working with British chemist Frederick Soddy, who made the breakthroughs that were to lead to the development of radiometric dating.From experiments on thorium compounds in 1902, Rutherford and Soddy discovered that the activity of a substance is directly proportional to the number of atoms present.Marie and Pierre Curie, 1867-19-1906 respectively, French physicist couple (she was Polish born), worked on magnetism and radioactivity (a term she coined in 1898), jointly awarded Nobel prize for physics with Becquerel in 1906.She gained a second Nobel for chemistry in 1911 for isolating pure radium.

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