Electricity occurs naturally but people invented ways to measure and control it. Early pioneers like Gilbert, Stoney, and Thomson discovered properties of electricity and atoms. Franklin proved lightning is electricity. Volta invented the battery, and Faraday discovered electromagnetic induction. Edison developed the incandescent light bulb for DC power, while Tesla invented the AC induction motor developed by Westinghouse, establishing AC as the dominant power system.

2. • It occurs naturally in our
world, and always has.
People, however, can be
credited with inventing ways
to measure it and to control it
for our use.
ELECTRICITY WAS NOT INVENTED

3. • Without the important
discoveries of these energy
pioneers we would not be
able to benefit from the value
that having a steady supply of
electricity brings to our lives.
*ELECTRO FROM SPIDERMAN ;)

4. • The basic building blocks of ordinary matter.
Atoms can join together to form molecules,
which in turn form most of the objects
around you.
ATOMS
• composed of particles
called protons, electrons and neutrons.

5. ATOM MODEL

6. • These parts of an atom have a positive
PROTONS
charge.
• In the middle of the atom, called the nucleus
and they do not move.

7. • These parts of an atom have no charge.
• Neutral and part of the nucleus of an atom
NEUTRONS
with the protons.

8. • These parts of the atom are very small and
weigh a lot less then the protons and
neutrons.
• Are not part of the nucleus of the atom,
instead they move around in orbits outside
the nucleus.
• Electrons are the only part of an atom that
ELECTRONS
moves.

9. • The flow of moving electrons.
• When the electrons flow it is called
an electrical current.
ELECTRICITY

10. • Electricity was not invented - it occurs naturally
in our world, and always has.
• People, however, can be credited with
inventing ways to measure it and to control it
for our use.
• Without the important discoveries of these
energy pioneers we would not be able to
benefit from the value that having a steady
supply of electricity brings to our lives.
ELECTRICITY

11. • Around 600 BC Greeks found
that by rubbing a hard
fossilized resin (Amber) against
a fur cloth, it would attract
particles of straw. This strange
effect remained a mystery for
over 2000 years.
AMBER

12. AMBER AND FUR CLOTH

13. ELECTRICITY PIONEERS

14. • A physician who studied the
attraction produced when
materials were rubbed, and
named it the "electric" attraction.
• From that came the word
"electricity" and all others derived
from it.
WILLIAM GILBERT

15. He proposed the
name "electron."
Unit of electric charge
which could not be
subdivided any further.
GEORGE JOHNSTONE STONEY

16. He discovered and
identified electron.
He won the Nobel Prize
in 1906 for his
discovery.
JOSEPH JOHN THOMSON

17. • He believed that lightning was a
flow of electricity taking place in
nature.
• He performed his famous kite
experiment in 1752 which proved
that electricity and lightning was
the same thing.
BENJAMIN FRANKLIN

18. • An Italian physician, physicist
and philosopher who discovered
that the muscles of dead frogs
legs twitched when struck by an
electrical spark.
• This was one of the first forays
into the study of bioelectricity, a
field that still studies the electrical
patterns and signals of
the nervous system.
LUIGI ALOISIO GALVANI

19. • an Italian physicist known for the
invention of the battery in the
1800s.
• Alessandro Volta
ALESSANDRO GIUSEPPE
ANTONIO ANASTASIO VOLTA

20. • The first electrochemical
VOLTAIC PILE
cell.
• It consists of two electrodes:
one made of zinc, the other
of copper.

21. • was an English scientist who
contributed to the fields of
electromagnetism and electroche
mistry.
• His main discoveries include
those of electromagnetic
induction, diamagnetism and
electrolysis.
MICHAEL FARADAY

22. DC VS AC

23. • In the late 1800's he developed
1,093 inventions, but his most
famous is the incandescent light
bulb.
• Inventor of DC (Direct Current)
Generator
THOMAS EDISON

24. • a British physicist and chemist.
He is most famous for inventing
an incandescent light bulb.
• Swan and Edison later set up a
joint company to produce the first
practical filament lamp. Prior to
this, electric lighting had been
crude arc lamps.
SIR JOSEPH WILSON SWAN

25. DC GENERATOR

27. • was a Serbian American
inventor, electrical
engineer, mechanical engineer,
and futurist best known for his
contributions to the design of the
modern alternating current (AC)
electricity supply system.
• Inventor of AC induction motor
NIKOLA TESLA

28. • a famous American inventor
and industrialist who
purchased and developed
Nikola Tesla's patented
motor for generating
alternating current.
GEORGE WESTINGHOUSE, JR.

29. AC INDUCTION MOTOR

30. • the Scottish inventor of
the steam condensing
engine.
• his name was given to the
electric unit of power, the
Watt.
JAMES WATT