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From them, however, he turned to pleas for the single tax and to exposures of legislative corruption and imbecility about which he neither knew nor cared so much as he knew and cared about the actual lives of working farmers. His imagination, whatever his zeal might do in these different surroundings, would not come to the old point of incandescence.
The lamp used by Sir Humphry Davy at the Royal Institution, at the beginning of the present century, was an arrangement of two carbon pencils, between which was formed the "electric arc" by the intensely-vivid incandescence and combustion of the particles of carbon passing between the solid carbon electrodes.
It is not surprising, therefore, that in September of that year, when Edison turned his thoughts actively toward electric lighting by incandescence, his early experiments should be in the line of carbon as an illuminant.
After the invention of the voltaic battery, early in the last century, experiments were made which determined that heat could be produced by the passage of the electric current through wires of platinum and other metals, and through pieces of carbon, as noted already, and it was, of course, also observed that if sufficient current were passed through these conductors they could be brought from the lower stage of redness up to the brilliant white heat of incandescence.
Every deadly frequency and emanation known to the fiendish hexan intellect, backed by the full power of the city, was poured out against the invaders in sizzling shrieking bars, bands, and planes of frenzied incandescence. Nor was vibratory destruction alone. Armor-piercing projectiles of enormous size and weight were hurled diamond-hard, drill-headed projectiles which clung and bored upon impact.
It became an inferno of light without corresponding warmth, of blinding, flaring, intolerable light reflected from the snow. It became luminous, as though the ghosts of the ancient days of incandescence had revisited the calendar.
When connected to a group of ten Swan lamps of five candle power, requiring a difference of potential of 20 volts, it raised them to vivid incandescence, considerably above their nominal capacity, but it failed to supply eighteen lamps of the same kind satisfactorily, showing that its working capacity lay somewhere between the two.
Such was the succession of phenomena which produced Iceland, all arising from the action of internal fire; and to suppose that the mass within did not still exist in a state of liquid incandescence was absurd; and nothing could surpass the absurdity of fancying that it was possible to reach the earth's centre. So I felt a little comforted as we advanced to the assault of Snæfell.
Now this material, when water is added to it, decomposes, and acetylene or C2H2 is formed, which is a gas of high illuminating value as the carbon separates and glows brightly after being heated to incandescence in the flame.
This was the very incandescence of anger. "Go!" she said. "I'm done with you!" "One thing more," he said doggedly. "The price of wheat. I shouldn't have said anything about justice. Putting that aside, it will be good business for you to pay the farmers their price. Otherwise you'll have red rebellion on your hands!" As Ambrose made for the door he met Gordon Strange coming in. "Wait!"
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