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Historical achievements in electricity

Historical achievements in electricity
Electronic AgeI think the Irish physicist c. Johnston Stoney said that the electricity produced by the movement of particles is very small, electrically charged.
In 1891, he proposed that these particles called electrons.
In 1897, the English physicist Joseph John Thompson proved the existence of electrons, and explained that they are involved in the synthesis of all atoms.
In a study published in 1913, American physicist Robert Milikan measured accurately the charge of an electro

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In the late 19th century, scientists discovered that electrons could separate from metal surfaces and discharged into a hollow valve.
The hollow valve is a glass tube that has removed from most of the air and contains electrodes connected to wires that extend through the bottle.
Historical achievements in electricity

Connecting batteries to electrodes leads to the flow of electrons inside the valve. The current can control by voltages. Vacuum valves can amplify,
merge and separate weak currents.
The invention paved the way for the manufacture of radios, television and other technologies

In 1947, American physicists John Bardin, Walter Pratin and William Shockley invented the transistor. Transistors perform the same functions as vacuum valves,
but they are smaller than vacuum valves, more durable,
and consume less electricity. By the 1960s, transistors replaced vacuum valves in most electronic equipment.
Since then, electron companies have been able significantly reduce the size of the transistor.
Today millions of transistors, connected together, placed in a single chip called the integrated circuit

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Recent developments Global demand for electricity is increasing year after year.
Most of the electricity we use comes from power plants that burn fossil fuels such as coal, oil and natural gas.
Part of the electric power comes from nuclear and hydroelectric power plants, while small amounts of solar cells,
windmills and other sources come from


The limited availability of fossil fuels and the potential for depletion of fossil fuel are of concern to many.
Another problem is that the current power generation methods may harm the environment.
Therefore, as hydropower companies are trying, scientists and engineers are trying to find alternative sources of electricity. These include solar, geothermal, wind and tidal energy.
See electricity inventory (problems; challenges)

Historical achievements in electricity

Many scientists hope that the use of new electrical devices will reduce the growing demand for electricity.
Computers, for example, may control the lighting systems provided by ordinary light bulbs, but consume five percent of the electricity consumed by these lamps.
Computers and modern communications systems enable people to work at home, saving the energy consumed in transportation