An electric light is a device that produces visible light from electric power. It is the most common form of artificial lighting and is essential to modern society, providing interior lighting for buildings and exterior light for evening and nighttime activities.
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Steam Turbine
invented by Charles Persons
A steam turbine is a machine that extracts thermal energy from pressurized…
Pelton wheel
invented by Lester Allan
The Pelton wheel or Pelton Turbine is an impulse-type water turbine invented by…
Arc lamp
invented by Humphry Davy
An arc lamp or arc light is a lamp that produces light by an electric arc (also…
Steam hammer
invented by James Nasmyth
A steam hammer, also called a drop hammer, is an industrial power hammer driven…
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