|
It is not only important, but, in a degree necessary, that the people of this country, should have an American Dictionary of the English language; for, although the body of the language is the same as in England, and it is desirable to perpetuate that sameness, yet some differences must exist. Language is the expression of ideas; and if the people of one country cannot preserve an identity of ideas, they cannot retain an identity of language. |
SI'PHON, n. [L. sipho,sipo]
A device, consisting of a pipe or tube bent so
as to form two branches or legs of unequal length, by which a liquid
can be transferred to a lower level, as from one vessel to another,
over an intermediate elevation, by the action of the pressure of the
atmosphere in forcing the liquid up the shorter branch of the pipe
immersed in it, while the continued excess of weight of the liquid in
the longer branch (when once filled) causes a continuous flow. The
flow takes place only when the discharging extremity of the pipe ia
lower than the higher liquid surface, and when no part of the pipe is
higher above the surface than the same liquid will rise by atmospheric
pressure; that is, about 33 feet for water, and 30 inches for mercury,
near the sea level.
One
of the tubes or folds of the mantle border of a bivalve or gastropod
mollusk by which water is conducted into the gill cavity. See
Illust. under Mya, and Lamellibranchiata.
A siphon bottle.
Inverted siphon, a tube bent like a siphon,
but having the branches turned upward; specifically (Hydraulic
Engineering), a pipe for conducting water beneath a depressed
place, as from one hill to another across an intervening valley,
following the depression of the ground. -- Siphon
barometer. See under Barometer. --
Siphon bottle, a bottle for holding aërated
water, which is driven out through a bent tube in the neck by the gas
within the bottle when a valve in the tube is opened; -- called also
gazogene, and siphoid. -- Siphon
condenser, a condenser for a steam engine, in which the
vacuum is maintained by the downward flow of water through a vertical
pipe of great height. -- Siphon cup, a cup
with a siphon attached for carrying off any liquid in it; specifically
(Mach.), an oil cup in which oil is carried over the edge of a
tube in a cotton wick, and so reaches the surface to be
lubricated. -- Siphon gauge. See under
Gauge. -- Siphon pump, a jet pump.
See under Jet, To convey, or draw off, by means of a siphon, as a liquid from
one vessel to another at a lower level.
| ||||||||