Word: sodium
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Dates: during 1910-1919
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Professor Richards with assistants has revised the atomic weights of oxygen, nitrogen, copper, nickel, calcium, sodium, and many other elements. During the past year he has undertaken several important investigations which will be continued during the present year...
This amazing outcome is contrary to the customary experience with several other elements, notably copper, silver, iron, sodium, and chlorine, each of which seems to give a constant atomic weight, no matter what the geographical source may have been. No attempt is made here to discuss the theoretical aspects of the facts presented, but attention is called to their qualitative agreement with the hypothesis brought forward by Dr. Fajans and by Dr. Soddy, that some of the places in the periodic table, corresponding to high atomic weight should perhaps include several elements, different in atomic weights, but very similar...
...research consisted in the preparation of pure sodium carbonate, a matter which required exceptionally pure atmosphere because sodium carbonate holds every trace of acid which may come in contact with it from the surrounding air. A pure atmosphere free from dust and fumes is therefore a desideratum. This was just what the new laboratory with its pure filtered air was able to provide...
...Physical Colloquium. "Wood: on Resonance Spectra of Sodium and lodine" by Dr. H. L. Blackwell, in Jefferson Physical Laboratory, Room...
...Physical Colloquium. "Wood: on Resonance Spectra of Sodium and Iodine" by Dr. H. L. Blackwell, in Jefferson Physical Laboratory, Room...