6. William Gilbert
The man who began the
science of magnetism in
earnest was William Gilbert
(1540 - 1603) whose book "De
Magnete" was published in
1600. He demonstrated that
the Earth itself was a huge
magnet, by means of his
"terrella" experiment.
7. Benjamin Franklin
In 1752, Benjamin Franklin
started experiments with
electricity. While trying to
prove lightning was electricity
he flew a kite in a lightning
storm with a key at the end and
the lightning touched the key
which made a spark.
8. Luigi Galvani
In 1786, Luigi Galvani
discovered that a dead frog's
muscles twitched when it was
placed near an electrical
machine. He conducted
experiments to try to explain
why a dead frog appeared to
jump. Galvani thought the
frog's nerves contained the
electricity
9. Alessandro Volta was an
Italian scientist. He invented
battery in the year 1799. He
was the first to develop a
battery (Voltaic cell) that
could produce electricity as
a result of chemical
reaction.
* The volt is named after Volta.
Alessandro Volta
10.
11. Charles coulomb was a great
scientist of the 18th century. He
experimented with the
mechanical resistance and
developed coulomb’s law of
electro-static charges in the year
1799.
Charles-Augustin
de Coulomb
12. Michael Faraday invented
the electric motor in 1821.
Georg Ohm, a German,
discovered the relationship
among voltage, current and
resistance in a circuit using
direct current. Ohm’s Law
deals with the relationship
between voltage and
current in an ideal
conductor.
Georg Ohm
Michael
Faraday
13. Thomas Alva Edison was a
businessman and an
American inventor. He
developed many devices
like, practical electric bulb,
motion picture camera,
photograph and other such
things.
Thomas Alva
Edison
14. Nikola Tesla invented the Tesla
coil; the Tesla induction motor;
alternating current (AC);
electrical supply system that
includes a transformer; 3-phase
electricity and motor. In 1891,
Tesla coil was invented and used
in electronic equipment,
television and radio sets. The
unit of magnetic field density
was named after him. Nikola Tesla
15.
16. Other scientist contributed
in the field of Electricity
Scientist
Hans Christian Oersted Showed that whenever a current flows through a
conductor, a magnetic field is associated with it.
Discovered Aluminum in the year 1820.
James Clerk Maxwell He developed the electromagnetic field equations in
the year 1864. The equations in it were explained and
predicted by hertz’s work and faradays’ work. James
Clerk Maxwell formulated an important theory – that
is, electromagnetic theory of light
17. Other scientist contributed in the field of Electricity
Scientist
Henrich Rudolph Hertz He proved the theory of Maxwell by engineering instruments to
transmit and receive radio pulses. He was the first person to
demonstrate the photo-electric effect. The unit of frequency was
named Hertz in his honorarium.
Andre Marie Ampere He studied the effects of electric current and invented solenoid.
The SI unit of electric current (the Ampere) was named after him.
Karl Friedrich Gauss He contributed to many fields like algebra, analysis, statistics,
electrostatics and astronomy. The CGS unit of magnetic field
density was named after him.
18. Scientist
Wilhelm Eduard
Weber
He devised an electromagnetic telegraph in the year 1833, and also
established a system of absolute electrical units, and the MKS unit
of flux was named after Weber.
Gustav Robert
Kirchhoff
He developed Kirchhoff’s law that allows calculation of the
voltages, currents and resistance of electrical networks.
James Prescott Joule He discovered the law of conservation of energy. The unit of
energy – Joule was named in his honor.
Other scientist contributed in the field of Electricity
19. Scientist
Joseph Henry Independently discovered electromagnetic induction in the year
1831 – a year before faraday’s discovery. The unit of induction was
named after him.
Lee De Forest He invented the first triode vacuum tube: Audion tube in 1906. He
was honored as the father of radio.
Walter schottky He defined shot noise-random electron noise in thermionic tubes,
and invented the multiple grid vacuum tube.
Other scientist contributed in the field of Electricity
20. Scientist
Edwin Howard
Armstrong
He invented electronic oscillator and regenerative feedback. In
1917, he invented super-heterodyne radio and patented FM radio
in the year 1933.
Pieter van
Musschenbroek
He is credited with the invention of the first capacitor in 1746.
Otis Frank Boykin Otis frank boykin was an inventor of resistor. Boykin
created the electrical capacitator in 1965 and an
electrical resistance capacitor in 1967. In all, Boykin
patented 26 electronic devices over the course of his
career.
Other scientist contributed in the field of Electricity
21. Scientist
John Ambrose Fleming Fleming patented the thermionic diode, the first practical vacuum
tube electronic device, in Britain in 1904.
William Shockley, John
Bardeen and Walter
Brattain.
The transistor was successfully demonstrated on December 23,
1947 at Bell Laboratories in Murray Hill, New Jersey.
Jack Kilby and Robert
Noyce
Noyce developed the integrated circuit. The same concept has
been invented by Jack Kilby at Texas Instruments in Dallas a few
months previously.
Other scientist contributed in the field of Electricity
