Artificial and Natural FlightMaxim, Hiram S. (Hiram Stevens)
Science
Artificial and Natural Flight
Maxim, Hiram S. (Hiram Stevens)
Aeronautics; Airplanes; Flight
One evening, in the State of Ohio, a farmer saw a very brilliant meteor;
it struck in one of his fields not more than 100 feet from his house. He
at once rushed to the spot, and, pushing his arm down the hole,
succeeded in touching it; but he very quickly withdrew his hand, as he
found it extremely hot. Some of the neighbours rushed to the spot, and
he told them what had occurred, whereupon one of them put his hand in
the hole, expecting to be burnt, but, much to his surprise, the tips of
his wet fingers were instantly frozen to the meteor. The meteor had been
travelling at such an exceedingly high velocity that the resistance of
the intensely cold and highly attenuated outer atmosphere was sufficient
to bring its temperature up to the melting point of iron; but the heat
did not have time to pass into the interior, it only extended inwards
perhaps 1/8 inch, so that when the meteor came to a state of rest, the
heat of the exterior was soon absorbed by the intensely cold interior,
thus reducing the surface to a temperature much below any natural
temperature that we find at the surface of the earth.
Nothing can be more certain than that the temperature is extremely low a
slight distance above the earth’s surface. As the air near the earth
never falls in temperature to anything like the absolute zero, it
follows that there is a constant change going on, the relatively warm
air near the surface of the earth always ascending, and, in some cases,
doing sufficient work in expanding to render a portion of the water it
contains visible, forming clouds, rain, or snow, while the very cold air
is constantly descending to take the place of the rising column of warm
air. I have noticed a considerable degree of regularity in the movement
of the air, especially at a long distance from land, where the
regularity of the up and down currents is, at times, very marked.
Public-domain text, read in full here on John Shaqi.
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