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Radio Record, Volume II, Issue 48, 14 June 1929, Page 31

[THs capacity of an ordinary variable condenser is varied by altering the overlap of the two sets of plates, and this is the same as varing the size of the plates or the distance ‘between them, which ever way you like to look at it. A fixed condenser is simply one which is not ptovided with any means of adjustment, so its capacity will always be that value marked upon it, i.e., .0005 mfd., .0001 mfd., ete., ete.