school energy&environment
Wind
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
Aeolian knowledge
Aeolian energy is the energy that derives from the wind. Men have used its power since ancient times to navigate…
Aeolian plants
The most important way to use wind power is to produce electric power through wind generators, namely aerogenerators. Electric power…
Aeolian distribution
In the last years we have assisted at an exponential growth of aeolic power installed and production of electricity generated…
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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The relentless growth of renewable energy sources continues... The Renewable Energy Policy Network for the 21st Century (Ren21) periodically publishes…
23 September 2019 / Energy
Everything is transformed
At primary school we learn that nothing is created and nothing is destroyed. We have heard this phrase so many…
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23 October 2013 / Air
Carbon Footprint
CO2 emissions and lifestyles If your parents decide to buy a new car, they might be attracted by a car…
13 May 2013 / Earth
Small steps, great footprints
Which one takes up more space, an apple or a steak? Have you ever wondered how much space is taken…
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18 May 2011 / Energy
Artificial photosynthesis
Science is inspired by nature The history of science and technology is packed with discoveries and inventions inspired by nature.…
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,…
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22 May 2016 / Energy
Green chemistry
A bit of history Chemistry accompanies man from that day long ago when coarse hands full of hope put out…
4 November 2009 / Energy
Ecological house
A look to the past At present, it is more and more difficult to assure the comfort standard which our…
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10 September 2020 / Energy
A simple and ingenious invention
There are objects so simple and ordinary that we forget their existence when we don't need them. Their presence is…
17 March 2020 / Energy
Energy and renewable sources: what is the current status?
The relentless growth of renewable energy sources continues... The Renewable Energy Policy Network for the 21st Century (Ren21) periodically publishes…
-
23 September 2019 / Energy
Everything is transformed
At primary school we learn that nothing is created and nothing is destroyed. We have heard this phrase so many…
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23 October 2013 / Air
Carbon Footprint
CO2 emissions and lifestyles If your parents decide to buy a new car, they might be attracted by a car…
-
13 May 2013 / Earth
Small steps, great footprints
Which one takes up more space, an apple or a steak? Have you ever wondered how much space is taken…
-
18 May 2011 / Energy
Artificial photosynthesis
Science is inspired by nature The history of science and technology is packed with discoveries and inventions inspired by nature.…
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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,…
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22 May 2016 / Energy
Green chemistry
A bit of history Chemistry accompanies man from that day long ago when coarse hands full of hope put out…
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4 November 2009 / Energy
Ecological house
A look to the past At present, it is more and more difficult to assure the comfort standard which our…
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10 September 2020 / Energy
A simple and ingenious invention
There are objects so simple and ordinary that we forget their existence when we don't need them. Their presence is…
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17 March 2020 / Energy
Energy and renewable sources: what is the current status?
The relentless growth of renewable energy sources continues... The Renewable Energy Policy Network for the 21st Century (Ren21) periodically publishes…
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23 September 2019 / Energy
Everything is transformed
At primary school we learn that nothing is created and nothing is destroyed. We have heard this phrase so many…
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