In closed localities ventilated normally, man lives in a medium which has not the electric field of open air, but the average ionization of its air is, as a rule, the same as in the open air.

As seen across North America at sometimes surprisingly low latitudes, brilliant auroral displays provide evidence of solar ...

277/2. It describes options and how to calibrate plane parallel ionization chambers, against air kerma or absorbed dose to water standards at cobalt-60 gamma ray energies. The use of these chambers to ...