Whether employing glycerine or even mercury, this experiment always generates integer multiples of the same value.
This experiment explored a quantity that may be obtained from the isospin plus half the strangeness plus half the baryon number. The friction from spraying from a rubber bulb, through the triboelectric effect, or else the direct use of an x-ray tube, allowed the experimenter to cause motion to reverse after the eponymous entities reached terminal velocity. The buoyant force in this setup is proportional to velocity with coefficient 6 pi nu a. It was an error in nu, the viscosity of the air, that put the original trial two percent off the true value, corrected only by x-ray diffraction studies. Whether employing glycerine or even mercury, this experiment always generates integer multiples of the same value. FTP, identify this experiment which suspended the namesake entities in an electric field in order to measure  the charge of the electron.
This experiment explored a quantity that may be obtained from the isospin plus half the strangeness plus half the baryon number.
Millikan {oil drop} experiment