megafarad

plural megafarads

1. obsoletenatural sciencesA unit of quantity of electric charge; the quantity of electricity flowing through a one megohm resistor when driven by an electromotive force of one volt for one second.

   (6.) How many megafarads are contained in 5.32 metre-gramme-second units of current?

   1876, Richard Evan Day, Exercises in Electrical and Magnetic Measurement, with Answers, page 45

   2 more examples

   […] when electrotyping, electric light, &ᶜ become commercial we may perhaps buy a microfarad or megafarad of electricity […]

   24 August 1872, William Thomson, 1st Baron Kelvin, letter to James Clerk Maxwell

   What is the work done by a current of 5 Megafarads per second through a resistance of 10 Ohms?

   1874, Josiah Parsons Cooke, Principles of Chemical Philosophy, page 575

2. An improbably large unit of electrical capacitance equal to one million farads.

   34. The capacitance unit of convenient size is (a) farad (b) microfarad (c) kilofarad (d) megafarad

   1997, Mahesh Jain, S. Chand's Objective Physics for Engineering and Medical Entrance Examinations, page 857

   2 more examples

   Because of MF (now correctly the symbol for the massive megafarad) and mf having at some time been common symbols for microfarad, the millifarad (correctly mF) is rarely referred to […]

   2002, Donald Fenna, A Dictionary of Weights, Measures, and Units, page 87

   Tomorrow he'd be sentenced to death by electrosheet, and couple of weeks after that, they'd put him in the electrocell with the two metal walls that were a megafarad capacitor, and then the great sheet of electricity would flash across, and then a janitor would come in and sweep Willy's ashes into a little plastic box to give to Mom and Dad.

   2015, Rudy Rucker, The Ware Tetralogy, page 345