The Red Cloud chief., 1883-05-11

How mary n. our t~py, sal grss
kae~ what i rnrani Is The .risnre q!
anyihings The ~uri ~sxaC~ nrsn.
true knosi~igv. zn1 g. kBOs truly. pr
fessls about an oAt-ci. sc mUsi kaS~ IT
What il j. made ~ ~hai csus-s Il. AHd
aha; properties Il has. soch As firm.
c"lor. weight
How shall ~ make our sap kabA.r'
Oi sap and water. Yea stI AL say.
onls sap and watsTs One ,ach buhble
will - gonr brfOr~ you eau sni RnothSr
Ia catch H. In my childhood dAy. I
thought i, rial fun "a ~ them burnt.
but Inorr inE Ia make them las, = long
time.
Now the sccrei lie, In getting Jus; The
night miNtgrr. fUt into a curamon
white bottle one and on--hsif oanr- 81
castle soap. one plat II saier sRI
threc-guzrtsr, Il a pint d, purr give
crime. This j. Plateau, SOLUTION. and
from it b. makes bubbles that arr S-ry.
,rry beautiful. though. tSing blind. be
can s-r them ohly ~,ih the ewes Il bis
mind
We can use In the blow ing an ordinary
tobacco pitz' cE n glass tuhs., IL = hAri
to max. sery large babbl.s with the
mouth. anil sometimes \ pair 81 bellows
j. used. We cannot examine eur bub-
bic while IL i dancing over ihr table
OF floating in the air. 80 Ne ned 4 sup
port. which Ne will make IL n wire
ring fastened horizontally to the head
II a large nail, The nail shouli hrt
L. driven into n small block 81 wo~si.
ju-, far enough Ia keep IL firm L~t;hc
ring be- smear.d with parsiins, q pr
vents the win from cutting int" the
bubble. 4 glass shade NAV b~ PLACED
over the bubble. and IT. support hut
protect. il from draughi. II air.
Let Us $50. now. what "a bubble con-
si>ts 81. A portion Of air enclosed hy =
ilm-somc,hing very thin-vhlch 3.
made IL soap and water. - Ne have
the three forms of matter he solid.
liquid and gaseous.
When blown from the mouth the air
inside IL the bubble il warmer aud
lighter than the cuisid. air. and our
bubble will rise. When filled from tci-
lows. the air j. colder and heavier.
causing the bubble Ia fall. This rising
and falling j. due 90 pressure 81 the air
which. some 81 the boys viii tell IA. !,
equal To fifteen pounds To every square
inch.
Different airs or gases have different
weights. This ma be prrtiiiy shown
by putting into n vessel of ans Kind a
few pieces II chalk. Pour over them n
little vinegar. A buhbling will l~gin
and a gas -ci free which We call car
i.onic acid gas. IL. presence may h.
shown by putting in a lighted match.
which this gas will nj once put out.
Fill a bubble with air, IT,, IL fall upon
the acid gas. IL will remain supported
seemingly upon nothing. for this air
Is i~u,isiblc-as long a. any 81 the gas Is
left. II YOU could al n bubble with hy-
drugcn !; would bound upwards NJ n
great rate. for that gss /. the lighicst
known.
Let W now look Mt the color. In our
bubble. How beautiful they are. dane
ing and flashing 80 la, changing 20
rapidly We n not begin Ia coun, them.
But ". know tina, white light. tha; t..
sunlight. il composed %. seven Co,ors.
They can all b. seen in the rainbow.
Let n beam of ligh, fall upon the hub-
BILE. Part 81 the ligh; passes right
through or Is absorbed. and part j. 1T
once thrown back or reflected. The
portion Il the film that ab~orb- all the
colors and reflects or throws back only
the blue viii appear blue. and 40 on for
all the othcrs. And 80 the thickness 81
the film changes the absorption and re-
Election of tn. light changes. soit is that
N bubble spsrklc- with all the hrsu;iful
and delicate ,int- 81 the rainbow.
Adding more glyc.rine will make tho
coloring cv. m1fc brilliant. Indeed.
a bubbles n be- made perfectly cor.
geou-.-Baptrsf Ho,Ay.