Martinsburg gazette. [volume] (Martinsburg, Va. [W. Va.]) 1833-1855, 1852-11-24
SIMPLE QUEsTIoNs scIENrIFICALLY
ANSWERED..
From DR.. BREwER's -oulDr 70 SCIENCE

FROM DIR. BREWERS GUIDE rosscfEHcE.
/ WHY does smoke ascend the chimney r..
Becaase the air of the room. when it passes
over the ire. becomes lighte. for being heat
ed; and being thus made lighter, ascends the
chimney, carrying the smoke With It. ~ n
What is smoke Small particles Of car
boa, separated By combustion from the fuel,
but not consumed ssss u I.
Why do smoke aud steam curl. as they as
cend p Because they are pushed round and
round by the ascending and descending cur
rents of air. 6s lasas f4sas
Why do some chimaegs smokes--Because
fresh air is not admitted iotoa room 50 fast
as it is consumed BY fff; IN consequence of
which, a current of air rushes dowuthe chim-
ney to supply the defcissey, driving the smoke
along with it. a
Why are some parts Of the ceiling blacker
and more filthy than othors p Because the
air being unable to petrstrate the thick joints
I Of the ceiling, passes by those parts, and de-
posts its SCOT and dust On others more pen
etrable. ~ @ npa31slsD
Why is water purified by being filtered
| through charcoal p Because charcoal absorbs
the impurities of the water. and removes all
disagrecable tastes aud smells, whether they
arise from animal or Vegetable matter.
| Why does charcoal remove the faint, Of
meat p Because it abserbs all putrescept ef-
fluvia, whether arising from animal or yegita-
Bile matter.
What is charcoal 7--Wo God which has been
exposed to red heat, iill it has been depri
we'd oi,all its gasscs and volatile parts. 8
Why are water and vine casks charred in.
side - Because charring the inside Of u cask
reduces it to kind Of charcoal; aud char.
coal, by absorbing animal and Vegetable i'm
pus;.ies, keeps the liquor sweet aud good.
VIZ does piece ofburnt bread make i'm
pure water cit to drinia because the sur
face of the bread, which has been reduced te
charcoal by being burnt, absorbs the inpu-
rites Of the water, and makes it quite palat-
able.
Why should toast and water. placed BY
side OF the sick, be made of burnt bread p
Because the charcoal surface Of burnt bread
prevents the water from being affected by the
impurities Of the sick room.
Why should sick persons eat dry toast
rather than bread and butter s--Because the
charcoal surface ofsthe dry toast helps to alb
sorb the acids and impurities of sick stom-
ach.
Why are timbers, which are to be exposed
to damp, charIed because charcoal under
goes no change by exposure TO cir and water;
in consequence Of which. timber will resist
weather much longer, after it has been char
red.
Why does water simmer before it boils?--
Because the particles Of water near the
bottom Of the kettle. being formed into steam
sooner than the rest, shoot upward; but are
condensed again as they rise. by the cold wa
ter, and produce what is called 'simmering."
Why will pot filed with water never boil,
when immersed in another vessel full DIVA
ter also because water can never be heat
cd above the boiling point all the heat abb
sorbed by water after it boils, is employed in
generating steam.
Why does kettle sing, when the water
SINNERS p Because the air, cntanglcd in the
water, escapes by fits and starts through the
spout of the kettle; which makes noise like
wind instrument.