Theoretical physics last week again proved that it has substance. The lightest element, hydrogen, has an atomic weight of 1.0078. The helium atom, next lightest in the table of elements, weighs 4.002. Are there no substances in between, with atomic weights of approximately 2 and 3?
A discrepancy between the spectrographic and chemical calculations of the weight of the hydrogen atom suggested that there must be a rare isotope of hydrogen mixed with the abundant common hydrogen found in water and sugar. Such an isotope would behave chemically like hydrogen, but weigh two, perhaps three times as much. Professor Raymond Thayer Birge...
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