Sounding the Ocean of Air: Being Six Lectures Delivered Before the Lowell Institute of Boston, in December 1898Rotch, Abbott Lawrence
Science
Sounding the Ocean of Air: Being Six Lectures Delivered Before the Lowell Institute of Boston, in December 1898
Rotch, Abbott Lawrence
Atmosphere; Balloons; Clouds; Kites (Meteorology)
Kites are supposed to have been invented four hundred years before the
Christian era by Archytas, and at Smyrna the flying of kites remains a
national sport to this day. We are told that two hundred years later,
a Chinese general, Han Sin, employed kites as a means of communication
with the garrison of a besieged town, and there is a legend about
their use in Japan to dislodge and carry away a golden ornament from a
tower. Whatever may be the truth of these stories, we know that
kite-flying in the Malay Archipelago, in China, and in Japan, has been
a pastime for all classes during centuries, and that the Asiatic
people have always been the expert kite-fliers of the world.
Kites with tails seem to have been introduced into England about two
hundred and fifty years ago, and Isaac Newton when a school-boy made
some improvements in them. Notwithstanding the fact that generations
of boys have flown kites and so eminent a mathematician as Euler
investigated their theory, until recently kites remained toys unsuited
for practical purposes. Since the tailless kite has become a familiar
object, it has been said facetiously that kites lost their tails by
the same process of evolution which deprived man of his caudal
appendage; but as kites without tails have been flown in Asia for
centuries, the truth is that the tailed kites were the ones first
brought to Europe as playthings. To-day in Holland we see boys flying
the English bow-kite and the common kite with crossed sticks, both of
which require tails, and by the side of them tailless kites imported
from the Dutch colonies in Java. Fig. 7 represents a kite from the
east coast of Java, drawn from a model in a museum at Amsterdam, and
also a drawing of a Chinese bird-kite in the National Museum at
Washington. Like most of the oriental kites, they are made flat, but
when exposed to the wind the extremities of the wings, which have a
frame of split bamboo, bend backward, securing in this way the
stability which in our common flat kite is gained by the action of the
tail in lowering the centre of gravity and in maintaining the
inclination to the wind.
[Illustration: FIG. 7.--Oriental tailless Kites.]
Public-domain text, read in full here on John Shaqi.
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