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Man has been using wind energy for thousands of years. The Egyptians were the first to experiment sailing on the Nile 5,000 years ago, while the first wind mills were made by the Babylonians and date back to the seventeenth century B.C. In the centuries that followed, wind mills spread all over the Middle East. Between 1200 and 1300 they were used in Europe too, especially in the northern countries. Even Leonardo da Vinci worked at perfecting these machines. In 1887, the French Duc de La Peltrie built the first aero generator to produce electrical energy. Today aero generators are utilised to obtain energy from the wind. These modern wind mills exploit the wind to make the blades of a big propeller rotate: the latter is connected to a generator that transforms mechanical energy (deriving from the movement of the blades) into electrical energy.
Aero generators vary in size and shape. In fact, they can have one, two or three blades of varying lengths: those with 50-centimetre-long blades are used as battery chargers; those with 30-metre-long blades are capable of producing energy to satisfy the daily electricity requirements of about 1000 households. When many aero generators are connected they form a wind-farm, which are real power stations. There are both on shore and off-shore wind farms.

subjects dealt with in Wind

energia_400x225_0062_conoscere l'energia eolica

Aeolian knowledge

Aeolian energy is the energy that derives from the wind. Men have used its power since ancient times to navigate…

energia_400x225_0059_gli impianti eolici

Aeolian plants

The most important way to use wind power is to produce electric power through wind generators, namely aerogenerators. Electric power…

energia_400x225_0060_eolico nel mondo

Aeolian distribution

In the last years we have assisted at an exponential growth of aeolic power installed and production of electricity generated…

energia_400x225_0063_ambiente e territorio

Environment and territory

Wind is abundant, economical, inexhaustible, widely distributed, and wind energy is a renewable source that does not produce any polluting…

special reports

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  • piccoli_passi

    13 May 2013 / Earth

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    Artificial photosynthesis

    Science is inspired by nature The history of science and technology is packed with discoveries and inventions inspired by nature.…

  • 7miliardi

    27 September 2012 / Life

    Over 7 billion people on Earth

    World population hits 7 billion Demographers have estimated that on 31 October 2011 world population reached the 7 billion mark,…

    chimicaverde

    22 May 2012 / Energy

    Green chemistry

    A bit of history Chemistry accompanies man from that day long ago when coarse hands full of hope put out…

  • rinnovabiliItalia

    21 April 2015 / Energy

    Renewable energy in Italy

    Renewable energy sources in Italy The GSE, Energy Services Operator, periodically publishes data and statistics on the renewable sources used…

  • carbon_foot

    23 October 2013 / Air

    Carbon Footprint

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from the Multimedia section

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    Wind energy production in Italy

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    Wind power installed in Europe in 2013

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