A battery is a collection of multiple electrochemical cells, but in popular
usage battery often refers to a single cell.[1] For example, a 1.5 volt AAA
battery is a single 1.5 volt cell, and a 9 volt battery has six 1.5 volt cells
in series. Dell Inspiron 910 Battery The first electrochemical cell was
developed by the Italian physicist Alessandro Volta in 1792, and in
1800 he invented the first battery, a "pile" of many cells in series.[4]
The usage of "battery" to describe electrical devices dates to Benjamin
Franklin, who in 1748 described multiple Leyden jars
DELL Inspiron Mini 9 Battery(early electrical capacitors) by analogy to
a battery of cannons.[5] Thus Franklin's usage to describe multiple
Leyden jars predated Volta's use of multiple galvanic cells.[6] It is speculated,
but not established, that several ancient artifacts consisting of copper sheets
and iron bars, and known as Baghdad batteries may have been galvanic
cells.[7]Dell Inspiron 1300 keyboard Volta's work was stimulated by the
Italian anatomist and physiologist Luigi Galvani, who in 1780 noticed
that dissected frog's legs would twitch when struck by a spark from a
Leyden jar, an external source of electricity.[8] In 1786 he noticed
that twitching would occur during lightning storms.[9] After many
years Galvani Dell H5639 keyboard learned how to produce twitching
without using any external source of electricity. In 1791 he published
a report on "animal electricity."[10] He created an electric circuit
consisting of the frog's leg (FL) and two different metals A and B,
Hp Pavilion DV9000 keyboard each metal touching the frog's leg
and each other, thus producing the circuit A-FL-B-A-FL-B...etc.
In modern terms, the frog's leg served as both the electrolyte and the
sensor, and the metals served as electrodes. Dell D510 keyboard He
noticed that even though the frog was dead, its legs would twitch when
he touched them with the metals.
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