โ Scribed by C.
No coin nor oath required. For personal study only.
CURRENT TOPlCS. 227 it that its heat loss is smalltaking advantage of the fact that electrons in an arc-discharge can go around corners, while heatradiation must go in straight lines. This combination of heatshielded cathode and low-pressure gas appears to give the four desired characteristics of a rectifier: high voltage, large current capacity, high efficiency and long life.
Phanotrons may be constructed according to the performance demanded. One type is rated to withstand 2o,ooo volts peak inverse voltage and to deliver a maximum current of 4 ยฐ amperes. Another tube requires 4oo watts to maintain the cathode temperature, is rated at 6oo amperes maximum output, Ioo amperes average, at any inverse voltage up to I5OO.
C.
๐ SIMILAR VOLUMES
SHORTAGE of nicotine in soap-nicotine preparations as ordinarily found on the market led to an investigation of the ingredients, preparation, and methods of packing this product, which is used as an insecticide. The nicotine content of hard soda soaps decreases very rapidly, but little or no change