The Volta effect is an obsolete name for the weak potential developed by the contact of different metals. This effect was first discovered by Alessandro Volta, and can be measured using a capacitance electroscope[1] comprised of different metals. Electric potential is the potential energy per unit charge associated with a static (time-invariant) electric field, also called the electrostatic potential, typically measured in volts. ... Alessandro Giuseppe Antonio Anastasio Volta Alessandro Giuseppe Antonio Anastasio Volta (February 18, 1745 - March 5, 1827) was an Italian physicist known especially for the development of the electric battery. ... A capacitance electroscope is a type of electroscope in which a dielectric material is sandwiched between the leaves of the electroscope. ...
Volta's electrophorous used two metal discs; one was rubbed to produce a negative electrical charge, the second disk was brought close enough to the first to establish a positive charge on the one side, leaving a negative charge on the other.
Volta was born on February 18, 1745, in the town of Como in Italy's Lombardy region.
Volta claimed that the mere contact between different conductors (especially metals) was able "to set the electric fluid in motion." He also claimed that the electric fluid—one of the several, imponderable fluids then found in physics—was the same in organic and inorganic bodies.
Volta (i8oi.) showed that although a separation of the two electricities was produced by the contact of two different metals (VoltaEffect), which could be detected by a sensitive See also:
The value of the Thomson t effect was calculated by multiplying this difference of temperature by the thermal capacity of either calorimeter, and dividing by the current, by the number of seconds in twenty minutes, and by twice the difference of temperature (about 200) between the ends a and b of either calorimeter.
Although the effect in copper is so small, he succeeded in obtaining changes of temperature due to the Thomson effect of the order of 1° C., which could be measured with satisfactory accuracy.
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