Open AccessThe consumption of carbon in the electric arc. I.- Variation with current and arc-length. II. - Influence upon the luminous radiation from the arc
Publication year - 1915
Publication title -
proceedings of the royal society of london. series a, containing papers of a mathematical and physical character
Language(s) - English
Resource type - Journals
eISSN - 2053-9150
pISSN - 0950-1207
DOI - 10.1098/rspa.1915.0057
Subject(s) - arc (geometry) , current (fluid) , electric arc , carbon arc welding , cathode , consistency (knowledge bases) , arc length , carbon fibers , electricity , radiation , variation (astronomy) , materials science , mechanics , atomic physics , physics , mathematics , electrical engineering , optics , electrode , geometry , thermodynamics , composite material , engineering , quantum mechanics , laser , shielding gas , laser beam welding , composite number , astrophysics
Experiments have been carried out to determine the amount of material lost by the poles of a continuous current carbon are under different conditions of current and are-length. The results indicate that when the are-length is extremely small, the loss from the cathode of one carbon atom is accompanied by the transfer between the poles of a quantity of electricity equivalent to four electronic charges, a surprisingly simple conclusion when the complex changes of shape of the carbon poles are taken into account. The experiments were conducted with poles which had been previously burnt to shape by running the are for some minutes before beginning the weighings. This Prevision is of the utmost importance, and is responsible for the remarkable consistency of the observations.