cm. to
cm.
.
In 1915 Mr. Carl Eyring tested by equation (29) the value of
on oil drops, of about the same size, in hydrogen and came out within .6 per cent of the value found in electrolysis, the probable error being, however, some 2 per cent.
Precisely similar tests on substances other than oils were made by Dr. E. Weiss[91] and Dr. Karl Przibram.[92] The former worked with silver particles only half as large as the oil particles mentioned above, namely, of radii between 1 and