and the equation
The results of this reduction are contained in the last column of [Table X]. These results illustrate very clearly the sort of consistency obtained in these observations. The largest departure from the mean value found anywhere in the table amounts to 0.5 per cent and “the probable error” of the final mean value computed in the usual way is 16 in 61,000.
Instead, however, of using this final mean value as the most reliable evaluation of
, it was thought preferable to make a considerable number of observations at atmospheric pressure on drops small enough to make
determinable with great accuracy and yet large enough so that the whole correction term to Stokes’s Law amounted to but a small percentage, since in this case, even though there might be a considerable error in the correction-term constant