Clark cell

World English Dictionary
Clark cell (klɑːk)
 
n
physics a cell having a mercury cathode surrounded by a paste of mercuric sulphate and a zinc anode in a saturated solution of zinc sulphate. Formerly used as a standard, its emf is 1.4345 volts
 
[C19: named after Hosiah Clark (died 1898), English scientist]

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