โ Scribed by Duckham, Arthur
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
The electrical conductivity of coal, at either 1 kHz or d.c., was measured at 24ยฐC on samples recovered from pyrolysis experiments aimed at modelling conditions during in situ gasification of coal. From an initial value of low3 S/m (when the coal is saturated with formation water), the conductivity
Coal carbon electrodes heat treated at temperatures between 800 and 2800ยฐC were tested with electric discharge under various conditions. The electrode specimens were prepared from Akabira weakly-caking coal and from Itmann strongly-coking coal without binder by means of cold molding at pressures of
I~ight and Electricity. ## 69 The Atlantic Cable and Hughes Telegraph.--By using the Tomasi relay the Hughes telegraph has been able to prlnt messages which were transmitted through resistances far greater than those of the Atlantic cable, and Abb~ Moigno ventures the prediction that the experime