On the Mass of the Mesotron
نویسنده
چکیده
"Data on the o1dest obtainable uranium leads from »1inerals unaltered as far as possible are especially desirable, to test the applicability of the actinium D: radium G ratio formula beyond a billion years. (The Manitoba uraninitc, for instance, discovered by H. V. Ellsworth, with a lead/ uranium=0. 27 should prove worth while. ) Ihey might also be interesting in another respect: In case the experiniental curve should deviate in that range from our theoretical it might indicate the cxistencc of a second actinouranium isotope (still a possibility as we mentioned in paper 1), not yet in equilibrium with our present isotope. The rutherford-Soddy disintegration theory allows one to calculate in a sir»pie way thc ratio of actinium D to radium G for different possible cases; it would bc, however, premature to discuss these points at the present time, "
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