Brook, Abraham (fl. 1749–1789), bookseller and natural philosopher, of unknown parentage, was the author of Miscellaneous experiments and remarks on electricity, the air pump, and the barometer, with a description of an electrometer of a new construction (1789). Brook explained that he had been interested in electrical experiments since 1749, but hitherto had not seen a friction machine that could produce as much electrical power as the one he had constructed after his friend the ...