History of Electronics
Category: Altro
è stato aggiornato: 12 set 2018
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Created byMike Darvin Amoto
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Charles de Coulomb
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.Luigi Galvani
Luigi Galvani was a professor in the
University of Bologna.
He studied the effects of electricity
on animals, especially on frogs.
With the help of experiments,
he showed the presence of electricity
in frogs in the year 1791.Alessandro Volta
Allesandro 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.Hans Christian Ørsted
Hans Christian Oersted showed that
whenever a current flows
through a conductor, a magnetic field is associated with it.
He initiated the study of electromagnetism
and discovered Aluminum in the year 1820.George Simon Ohm
George Simon Ohm was a German physicist.
He experimented with the electrical circuits
and made his own part including the wire.
He found that some conductors worked
when compared to others.
He discovered Ohms law in the year 1827,
which is a relation between current,
voltage & resistance. The unit for resistance
is named after him.Michael Faraday
Michael Faraday was a British scientist
and great pioneer experimenter
in electricity and magnetism.
After the discovery by Oersted,
he demonstrated electromagnetic induction
in the year 1831. This is the basic principle of the working
of generators.James Clerk Maxwell
James Clerk Maxwell
was a British physicist.
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.Heinrich Rudolf Hertz
Henrich Rudolph Hertz
was a German physicist born in 1857 in Hamburg.
He demonstrated the electromagnetic radiation predicted by Maxwell.
By using experimental procedures,
he proved the theory
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.André-Marie Ampère
Andre Marie Ampere
was a French mathematician and physicist.
He studied the effects of
electric current and invented solenoid.
The SI unit of electric current (the Ampere)
was named after him.Edwin Howard Armstrong
Edwin Howard Armstrong
was an inventor
and an American electrical engineer.
He invented electronic oscillator
and regenerative feedback.
In 1917, he invented
super-heterodyne radio and
patented FM radio
in the year 1933.Lee de Forest
Lee de forest was an American inventor,
and he invented the first triode vacuum tube:
Audion tube in 1906.
He was honored as
the father of radio.Joseph Henry
Joseph Henry was an American scientist,
and independently discovered
electromagnetic induction
in the year 1831 –
a year before faraday’s discovery.
The unit of induction
was named after him.Wilhelm Eduard Weber
Wilhelm Eduard Weber was a German physicist.
He investigated terrestrial magnetism
with his friend Carl Friedrich.
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.Nikola Tesla
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.Walter H. Schottky
Walter schottky was a German physicist.
He defined shot noise-random electron noise
in thermionic tubes,
and invented
the multiple grid
vacuum tube.James Prescott Joule
James Prescott Joule
was a brewer and an English physicist.
He discovered the law of conservation
of energy.
The unit of energy –
Joule was named in his honor.
To develop the scale of temperature,
he worked with Lord Kelvin.Gustav Kirchhoff
Gustav Robert Kirchhoff was a
German physicist.
He developed Kirchhoff’s law
that allows calculation of the voltages,
currents and
resistance of electrical networks.Johann Carl Friedrich Gauss
Karl Friedrich Gauss was a
physical scientist and a
greatest German mathematician.
He contributed to many fields like
algebra, analysis, statistics, electrostatics
and astronomy.
The CGS unit of magnetic field density
was named after him.Thomas Alva Edison
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.
While inventing the electric lamp,
he observed the Edison effect.
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