Fun with English - Windmill
I just passed by a shopping mall in the
afternoon. And, I went inside and saw a 'windmill'. LOL
Oh yes, I have a question for you. Do
you know what is the early history of windmills? Or which country was
the first to use windmills?
Netherlands? No no no… Check out the
link below to find out the answer.
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https://www.reference.com/history/early-history-windmills-c39908d5a6587e64?qo=contentSimilarQuestions
Do you know what is the early history
of windmills?
ANS:
Some historians believe that
vertical-axis windmills were first constructed in Persia between A.D.
500 and 900 to assist in the tasks of grinding grain and pumping
water. There are other accounts that vertical-axis windmills were
first invented in China, however the first documentation of windmills
in China was not until 1219.
The first windmills in Western Europe,
which were built around 1270, had a horizontal-axis configuration.
Around 1390, the Dutch began constructing tower mills, which were
multi-floor towers with a post mill that had different floors whose
purpose was to grind grain, remove chaff, store grain
and serve as a residence for a family.
Over the years, windmill sails have
been engineered to generate more aerodynamic lift, improving
rotor efficiency and speed and resulting in better pumping and
grinding action. With improvements to sails in Europe, windmills had
many additional diverse functions including irrigation,
drainage, sawmilling of wood and storing commodities.
With the advent of steam
engines, the use of large tower mills began to decline in Europe in
the 19th century. Around this time in the United States, the Holladay
windmill was invented in 1854, which perfected mechanical water
pumping systems that are still in use as of 2015.
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Vocabularies
Grind
Word form: Verb
Meaning: To break something into very
small pieces by using a machine.
http://www.macmillandictionary.com/dictionary/british/grind_1
Grain
Word form: Noun
Meaning: The seeds from crops such as
wheat, rice and so on.
Chaff
Word form: Noun
Meaning: The outer part of wheat and
other grains that is removed before the grains are used.
Aerodynamic
Word form: Adjective
Meaning: An aerodynamic shape or design
allows a plane, car etc to move through the air in a smooth and fast
way.
Windmill sails
Rotor
Word form: Noun
Meaning: One of the long flat pieces of
metal on top of a helicopter that turn around to lift it off the
ground.
Diverse
Word form: Adjective
Meaning: Different from each other.
Advent
Word form: Noun
Meaning: An invention being made.
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