BAL99459 Dr William Gilbert (1544-1603) showing his Experiment on Electricity to Queen Elizabeth I and her Court, 19th century (oil on canvas) (see detail 99460) by Hunt, Arthur Ackland (fl.1863-1913); Private Collection; (add.info.: established the magnetic nature of the earth; fist to use the terms electricity, electric force and electric attraction; the gilbert, unit of magnetomotive power is named after him; #141); English, out of copyright.