Poynting, J. H. (John Henry), 1852-1914, Shakespear, Gilbert Arden, ed, Barlow, Guy, joint ed · Cambridge, University Press · leaf 421
t hot by gas-burners below it, and the charcoal bulbs C^ andGa were strongly heated electrically by enclosing them in asbestos tubes con-taining coils of platinum wire. From time to time the whole apparatus waswashed out with dry oxygen generated from the manganese dioxide in thebulb E. A small… … Fig. 3. have ceased to give off any gas, and the Gaede pump would bring the vacuumdown to a hard X-ray stage in about 10 minutes after admitting oxygen.The temperatures of C^ and Cg were then somewhat reduced, and the apparatuswas sealed off at /Si. B and F in the figure represent phosphorus…
Poynting, J. H. (John Henry), 1852-1914 · Physics
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