TY - JOUR
AU - RYDE, J. W.
AB - A DISCHARGE of electricity through a gas at atmospheric pressure generally takes the form of a luminous spark which will pass only under a potential gradient of several thousand volts per centimetre. If, however, the pressure of the gas is reduced, the appearance of the discharge changes. First it spreads out into wavy streamers; the streamers then broaden until the discharge tube is filled with a diffuse luminous glow extending from the positive electrode to within a short distance of the cathode. This glow is known as the positive column. The cathode is now covered with a layer of bright luminosity called the negative glow, and on close inspection is seen to be not quite in contact with the electrode but separated from it by a thin and sharply defined region, known as the Crookes's dark space. Another less well-defined dark region, the Faraday dark space, is between the negative glow and the positive column. Further reduction of the pressure results in a widening of both dark spaces and the negative glow, the positive column at the same time becoming correspondingly shorter. At still lower pressures the Crookes's dark space increases until finally it fills the whole tube and there is no further luminosity of the gas.
TI - Rare Gas Discharge Lamps
JF - Nature
DO - 10.1038/112944a0
DA - 1923-12-29
UR - https://www.deepdyve.com/lp/springer-journals/rare-gas-discharge-lamps-3UTReaRvxl
SP - 944
EP - 945
VL - 112
IS - 2826
DP - DeepDyve
ER -