Askov American. [volume] (Askov, Pine County, Minn.) 1914-current, 1915-01-14

rived from the Latin sspiritus."
breath: while the Greek word for
spirit (ruachl means both wind and
spirit" and Is frequently translated
"the spirit of the Lord. Our English
wind comes from the root va, to
blow, and was originally the present
participle Of the verb with the sense
Of blowing
Etymologically therefore. there il
an interesting connection between tho
breath of the living creature, the spir.
II on the Lord. and the familiar phe-
n0menon of wind, relationship rnost
suggestive when reading ''The Lord
God breathed into his nostrils the
breath OF life" "a sound from heaven
as OF rushing mighty wins" at Pen-
tecost, ''the wind OF the Lord, and
the remarkable passage In Ezek. 27:9:
"Come from the four winds. o breath,
and breathe upon these slain, that
they may live"
What is this mighty force? Mere
iy air in movement" replies the ply
sicist; and he starts explaining the
difference between still. dead air and
air in motion, and dwells on the fact
Of the movement being undiscerned by
the eye, though It's effects are visible
through the pressure II exerts upon
every object that lies In Its path. We
compare the ordinary pressure Of the
alp per square inch OF surface at the
sea level (14.7S Ih) with the tremen.
dous pressure of the wind blowing a
hurricane at 92 miles an hour. the
kindly pressure II exerts upon our
bodies to prevent them from dropping
on the earth, and the pressure il ex-
erts inside soap bubble as well as
outside It, thus making possible one Of
the daintiest nature toys imaginable.
Add little pressure to the air out
side, blow upon the bubble. and the
magician wind makes II vanish before
our eyes.
How is air set In motion7 Briefly,
the normal pressure of air ia disturbed
directly one part IL heated more than
another. for heat causes air 10 expand
and rise. In doing so It leaves space
into which the cooler surrounding air
presses. This. then, Ii the KEY to
wind: difference Of pressure In ad-
joining parts OF stratum OF air. the
result Of inequality of temperature.
But In determining wind movements
certain conditions have to be consid-
cred. For instance. there is proximity
to land or sea. for the air over land
heats more rapidly than that over wa
ter. The presence OF water yapor In
fiuences the creation of wind. since
the warm air. which alone can hold
water vapor. has pressure much
lighter than that OF dry, cold air The
sun. In its apparent journeys north
and south. produces seasonal yaria-
tons In heating which much affect the
winds. And, as IL well known. the
greater the height above sea level,
the less the pressure OF superincum-
bent air, and the less the heat. Evi.
IDENTIFY these conditions must affect
the nature, direction and cCnstanay Of
the movement OF the air. r.
So important Is wind I'm influencing
the activities of man and the habita-
bility Of any portion Of the earth. that
special department OF physics. me-
teoroIogy, Is concerned with It and
the allied study OF weather. r
The atmosphere, as the medium for
the conveyance of sound waves, cleo
trio currents and aircraft, demands
increasingly profound understanding
In order to master It. And in face OF
the marveIs revealed In recent years,
we are quite prepared to listen to