Ferranti phenomenon

Fer`ran´ti phe`nom´e`non

1.(Elec.) An increase in the ratio of transformation of an alternating current converter, accompanied by other changes in electrical conditions, occurring when the secondary of the converter is connected with a condenser of moderate capacity; - so called because first observed in connection with the Ferranti cables in London.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.