Monthly Weather Review · 1920 · 12 citations · 0 references
X ecial apparatus permitted a quick and accurate t.est those under whic the ionization tests were made; and a suh,ject,ion of the instrument to a wide range of teniperature. Results show that the number of ions gei!erat.ed per cubic centimeter within an airtight chamber IS 8.22 per second in the basement of the physical laboratory, Universitr of California, and 4.15 over the Pacific Ocean.