A type of voltaic cell consisting of an anode made of zinc amalgam and a cathode of mercury both immersed in a saturated solution of zinc sulphate. The Clark cell was formerly used as a standard of e.m.f.; the e.m.f. at 15°C is 1.4345 volts. It is named after the British scientist Hosiah Clark (d.1898).
A type of voltaic cell consisting of an anode made of zinc amalgam and a cathode of mercury both immersed in a saturated solution of zinc sulphate. The Clark cell was formerly used as a standard of e.m.f.; the e.m.f. at 15°C is 1.4345 volts. It is named after the British scientist Josiah Clark (1822–98), who invented it in 1873.
A mercury-zinc standard cell with e.m.f. defined as 1.4345 volts at 15 °C. It has been superseded by the Weston standard cell.
Angle of flow of output current for different amplifier classes
- ball
- Ballance, John (1839–93)
- ball and pillow structure
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- ball clay
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- Balliol, Edward (died c.1364)
- Balliol, John (c.1250–1313)
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- ballistic pendulum
- ballistics
- ballistic trajectory
- Ball, John (1381)
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- ball of wax example
- balloon
- balloon sounding
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- balm
- Balmaceda, José Manuel (1840–91)
- Balmer, Johann Jakob
- Balmer limit