Beta dispersion (original) (raw)

Beta dispersion is the phenomenon associated with the ability of a biological cell membrane to filter out low frequency currents and allow high frequency currents to pass through. It was originally hypothesized by Rudolf Höber in 1910 and confirmed through a series of experiments between 1910 and 1913. Höber used centrifugation to obtain a dense pellet of red blood cells then measured the conductivity of the cell sample at low frequencies (100 – 200 Hz) by using methods developed by Friedrich Kohlrausch. It was determined that the cells had a conductivity equal to 0.02% NaCl solution.