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ALBERT EINSTEIN
Biography and inventions
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Thomas Edison Profile
Thomas Edison (1847-1931),
American inventor, who developed an incandescent electric
light bulb was born in Milan, Ohio.
Inventions done by Thomas
Edison
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Telegraphic repeating
instrument
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Phonograph
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Incandescent electric light
bulb
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First
large central electric-power station
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Kinetoscope
Thomas Edison Effect
'We can get an electric
current to flow through vacuum'. Thomas Edison noticed this
observation in 1883. After experimenting with light bulbs
Edison saw that he could get current to move from the hot
filament to a metal plate. What Edison founded was that
electrical current doesn't need a wire to move through i.e a
medium to move through. It can travel easily through a gas
or even a vacuum. This is what we know as Edison effect.This
discovery by Thomas Edison so called Edison's discovery that
current can travel through a vacuum was not considered
useful until 1904 then a British scientist named John A.
Fleming made a vacuum tube known today as a
diode. At that time
diode was called as a "valve,"
because of it throwing electric current in the tube to
travel only in one direction. This single directional flow
was important for radio sets which had to convert
alternating current into direct current AC to DC Conversion.
Now these Diodes are used in almost every
electronics circuit
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