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    • The Ozone in the Earth's Atmosphere - Nature

      Nature· 1 day ago

      THE first accurate measurements of the amount of ozone in the atmosphere were made by Fabry and Buisson at Marseilles in 1920, and their method has been modified and developed by Dr. G. M. B ...

    • Radio-Active Changes in the Earths 1 - Nature

      Nature· 1 day ago

      The source from which radium is obtained is the mineral pitchblende. This mineral occurs in veins, like the majority of the useful metals; I may refer particularly to the mineral veins of Cornwall, so long famous as a source of tin.

    • Thickness of the Earth's Crust - Nature

      Nature· 1 day ago

      THE question in debate is not a mathematical one. Accepting Archdeacon Pratt's calculations as correct, they would show that certain facts in the

    • Lightning Current Recorders - Nature

      Nature· 1 day ago

      In the Electrician of August 4 an account is given of a simple magnetic device which has been largely used for recording the currents that flow in the & ...