The document discusses the history of electricity and early electric machines. It describes how Alessandro Volta constructed the first electric battery called the "voltaic pile" in 1800, which consisted of alternating copper and zinc discs separated by brine-soaked cloth. The voltaic pile was one of the first electric machines built and generated electricity through a chemical reaction rather than a voltage difference between metals. Volta used his machine to decompose chemicals and produce new substances, demonstrating early applications of electricity.

1. {
What a machine!!
What a machine!
María Paula Jiménez,
Noa Lindo,
Rocío Mosquera,
Abigail Sánchez.

2. WHO?
 Benjamin Franklin
WHEN?
 Philadelphia, 1752
Discovery of electricity

3.  1800: Alessandro Volta
constructs the volcanic pile
(early electric battery)
 1831: Michael Faraday creates
the electric dynamo (a crude
power generator)
Thanks to his invation electricity
became viable for the use in
technology!!
 1879: Thomas Edison produces
a realiable, long-lasting electric
ligth bulb
Ben was’t the only keen in electricity!!
We all
discovered
electricity

4.  GREEKS
Static electricity
 ROMANS AND PERSIANS
Pots with sheets of copper inside
(early forms of batteries)
But… was there something before?

5.  Just after Thomas Edison invented the
light bulb, the first application for
electricity was created.
 It was used for developing an entire
power generation and a distribution
system. It was also used for providing a
few squares blocks of Manhattan electric
power, illumination.
First application

6.  Find out what was one of the first
electric machines were built
One of the first electric machines that were
built was the electric battery made by
Alessandro Volta.
 Identify the parts of the machine.
The parts of the electric battery are: post,
intercell connector, positive strap, posistive
plate, separator, negative strap, negative
plate and the partition.
First electric machine

7.  Before Volta, it was assumed that electricity
was generated by living beings (animal electricity).
 He discovered that electricity could be generated
chemically and made to flow evenly through a
conductor in a closed circuit.
 He built a battery, known as a Voltaic pile, made of
alternating copper and zinc discs, with each pair of
metals separated by flannel soaked in weak acid.
And… where did the energy
consumed came from?

8.  On March 20, 1800, Volta wrote to
the London Royal Society to describe the
technique for producing electric current
using his pile.
 On learning of the voltaic pile, William
Nicholson and Anthony Carlisle used it to
discover the electricity of water.
 Humphry Davy showed that the electric
force, which drives the electric current
through a circuit containing a single
voltaic cell, was caused by a chemical
reaction, not by the voltage difference
between the two metals.
 He also used the voltaic pile to
decompose chemicals and to produce new
chemicals.
What did he use this machine for…?

9.  http://www.universetoday.com/82402/who-discovered-electricity/
 http://en.wikipedia.org/wiki/Benjamin_Franklin
 http://www.enwin.com/kids/electricity/history.cfm
 http://www.funsci.com/fun3_en/electro/electro.htm#5
 http://en.wikipedia.org/wiki/History_of_the_batte
 http://www.princeton.edu/~achaney/tmve/wiki100k/docs/Voltaic_pile.h
tml
Resources: