A rheoscope is an instrument for detecting or measuring currents, such as fluid currents or electric currents. The word rheoscope as a detector of electrical currents was coined by Sir Charles Wheatstone about 1840  but is no longer used to describe electrical instruments.
- Stein, Jess, ed. (1980). The Random House college dictionary. Random House. p. 1132. ISBN 0-394-43600-8.
- Brian Bowers (ed.), Sir Charles Wheatstone FRS: 1802-1875, IET, 2001 ISBN 0-85296-103-0 pp.104-105
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