Question

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 for yourself along similar lines. 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 had 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 a wet line as the current flowed down. (Do not under any
circumstances think of trying this yourself) 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 by
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 flags over
targets, during night-fighting, for carrying men over enemy lines and 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. (Never fly an aerial in stormy weather or when there are cumulus
clouds about). During the last war the RAF developed a "kite flare' as part of survival
equipment for airmen forced down at sea. When airborne the kite was attached to a special
shock absorber which was fixed to the dinghy. It was stated if there was a 6 mph wind, the
kites would stay aloft indefinitely
Some of these kites were brought to Australia and sent to the 6 Australian Division in 1944
for trials to determine whether they were of use in jungle warfare, especially in defining
locations. After experiments, the authorities decided that they were of no value for this
purpose​

Answer 1

Answer:

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