You may never want to fly kites to keep away evil spirits, as the Chinese have done
for centuries, or to make rain, as the Tibetans did, but some more modern and western
uses may tempt you to try experimenting yourself along similar lines. Ancient and
medieval Chinese sources, describe kites being used for measuring distances, testing
the wind, lifting men, signalling and communication for military operations.
The earliest known Chinese kites were flat (not bowed) and often rectangular. Later,
tailless kites incorporated a stabilising bowline. Kites were decorated with
mythological motifs and legendary figures; some were fitted with strings and whistles
to make musical sounds while flying. From China, kites were introduced to
Cambodia, India, Japan, Korea and the western world.
The most widespread use of kites in modern times has been for meteorological
investigations. Everybody knows about how Benjamin Franklin, the great American
scholar and statesman, sent a kite up in 1752 during a thunderstorm to prove that
lightning was caused by electricity. He produced sparks at ground level from a key
hung on the wet line as the current flowed down it.
A second investigator repeated Franklin’s experiment shortly afterwards and was killed.
By sending up instruments on kites it has been possible to make readings of air pressure,
temperature, speed, direction and humidity. Although thermometers had been sent up
long before, it was not until 1894, that a self-reading thermometer, a thermograph, was
sent up by a kite. The army, navy and air force have used kites in various ways for
decades. Another Korean version of the invention of the kite tells how a general used one
to carry a line across a stream. This line then formed the basis of a bridge.
Lines are still occasionally flown from point to point in this way using kites. At sea,
kites have often been used to carry a line to distressed ships in rough weather. Kites,
especially box and bow kites, have been used as gunnery targets. They are easy to
make and cheap to use and will stand quite a lot of punishment before they cease to
fly. Apart from their use as targets, kites have been used by the army to fly flags, for
aerial photography over enemy trenches, for suspending flares over targets during
night fighting, for carrying a man over enemy lines, for dragging torpedoes etc to a
target area.
They have been used by both military and civil authorities for raising, transmitting
and receiving aerials to obtain improved wireless reception. As a matter of fact, the
first long-distance short wave transmission of all made use of an aerial flown on a
kite. When Marconi made the famous transatlantic transmission, he raised his
receiving aerial some 400 feet on a kite. During World War II the RAF developed ‘a
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Absolutely correct my friend!
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