James Prescott Joule
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James Prescott Joule was an English physicist. Joule studied the nature of heat and discovered its relationship to mechanical work. This led to the law of conservation of energy, which in turn led to
Joule James sitting
An electric motor presented to Kelvin by James Joule in 1842. Hunterian Museum, Glasgow.
Joule's Heat Apparatus, 1845
James Prescott Joule
Joule heating
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Joule heating is the process by which the passage of an electric current through a conductor produces heat.
James Prescott Joule
…observations of magnetostriction, and he found the relationship between the current through a resistor and the heat dissipated, which is also called Joule's first law. His experiments about energy transformations were first published in 1843. James Joule was born in 1818, the son of Benjamin Joule, a wealthy brewer…
A coiled heating element from an electric toaster, showing red to yellow incandescence
An incandescent light bulb's filament emitting light
Electric radiative space heater
Electric tabletop hotplate