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. 1992 Mar-Apr;97(2):299–304. doi: 10.6028/jres.097.010

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The Journal of Research of the National Institute of Standards and Technology is a publication of the U.S. Government. The papers are in the public domain and are not subject to copyright in the United States. Articles from J Res may contain photographs or illustrations copyrighted by other commercial organizations or individuals that may not be used without obtaining prior approval from the holder of the copyright.

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Fig. 2a — Proposed circuit for measuring α. The voltage V_s required to keep the potential of the island a constant when n electrons are pumped onto the island can be used to measure the electron charge in terms of C_s, and V_s. The electrometer monitors the potential at a.