Symmetrical Luminous Patterns formed on Anode by Electrical Discharge through Helium. Description of Experiment.---When a continuous electrical discharge passes through helium at a pressure of 2 cm., the anode glow may break up into a number of spots more or less regularly distributed. The most striking arrangement is the three ring type with one spot at the center of a regular pentagon, which in turn is surrounded by eleven other spots uniformly distributed about the circumference of the circular anode, which is 2.7 cm. in diameter.
No takes yet. Share an insight, caveat, or question.
G M Mackay (1920) studied this question.