Main Page | See live article | Alphabetical index The daraf is the unit of electrical elastance (symbol: F-1), the ability of an electric potential to charge a capacitor; it is the reciprocal of the farad. Proposed by A.E. Kennelly in 1936 as a backwards spelling of farad, the daraf is not a recognized SI unit. References Journal of the Institute of Electrical Engineers (GB) volume 78, page 241 (1936). This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.