Through a series of precise measurements of the EMF of acid H-type cells (there is Pb, Sn, or Pb-Sn in the amalgam) provided by three factories, the characteristics of these cells were studied. The measuring apparatus...Through a series of precise measurements of the EMF of acid H-type cells (there is Pb, Sn, or Pb-Sn in the amalgam) provided by three factories, the characteristics of these cells were studied. The measuring apparatus and temperature control system are basically similar to those used in the experiment of 1974. The temperature graclient of oil bath was measured by a precision platinum resistance thermometer. It was found that the horizontal temperature gradient of the bath was less than 0.001℃ under any temperature and the gradient between any two points in the working region was less than 0.002℃.展开更多
文摘Through a series of precise measurements of the EMF of acid H-type cells (there is Pb, Sn, or Pb-Sn in the amalgam) provided by three factories, the characteristics of these cells were studied. The measuring apparatus and temperature control system are basically similar to those used in the experiment of 1974. The temperature graclient of oil bath was measured by a precision platinum resistance thermometer. It was found that the horizontal temperature gradient of the bath was less than 0.001℃ under any temperature and the gradient between any two points in the working region was less than 0.002℃.
