The Cambria freeman. [volume] (Ebensburg, Pa.) 1867-1938, 1881-10-28
Simple Experiments in Electricity.

4 great many experiments can be P
formed with glass tubes, sticks ol s'-
ing wax and sulphur. when only sma,'
quantities of elect Ticity are required.
The best rubber for smooth glass iuiH'
is the rough side Of black oiled SILK.
( 4 little beeswax drawn Over the surface
of tube will greatly increase its pow
er In rubbing tube, the hand should
be kept two or three inches below thC
upper part of he rubber. otherwise the
electricity will discharge Itself upon thu
hand and nothing will remain upon {
tube for the experiment When IN"
tube is in very good order. and strongly
excited. it will throw off many pencils
OF rays at every stroke. without the alp
pTOach of any conductor except what
moisture may float in the common at
mOsphere.
THE MAGIC FEATHER. .-ElectTify q
smooth glass tube with rubbeF. and
hold small feather at a short distance
from it. The feather VIII instantly hy
to the tube. and adhere to it for Snort
time II will then flv of. and the iHhe
car never be brought close 10 the feath
er till it has touched the side ot the
room. or some oi her body that comma
uicates with tie ground. Il therefor.
the feather and the Size of -h- % m.
yuu may drive il round 10 all parts uH
the room without touching ; ANA,
what is very remarkable. the same side
of the feather will be constantly upUo-
site the tube While the feather Is tiN
ing before the smooth tube, l. VIII be-
Immediately attracted by au excited
rough tube or y stick of wax. and tiy
continually from one tube to hr a. heT,
till the electricity Of both is discharged
THE ROTATING. PIPE.-Lav yyatch
down on table. and on the glass hai-
aUce a tobacco pipe very reiuiiY.
Next take a wine-gloss. rub II quickly
witE silk handkerchief, and hold D.
for half a minute before The fire then
apply it 10 the mouth end OF the ppr.
and the latter. attracted by the elrr-
triciIy excited 10y the friction au'
warmth Of the handkerchief and glass
viii immediately follow u ; and toy car
rying the wine-glass around, always lu
front of the pipe, the latter viii COZ
Time its rotary motion. the watch
glass being the centre on which Il TO-
tateS.
ELECTRICAL PAPER.-Take "A piece
of common brown pdDeT. about the size
. OF ar octave book. hold II before the liT-
+ till quite dry and h"t. then draw IL
bTiskiy under tie arms several times. so
as to rub il on both sides at once 10y j
coat. The paper Will hr found So pow
erfully electrical. that If placed agaiu~
a wain>coted or paprred wall of "a
room, 1t will remain there for. s"lnr
minutes without falling. If The paper
be again warmed. and drawn under lie
arm as brfOTe. and hung up 10y "a thread
attached to one corner of IL. II VIII
hold no several feathers on each side.
Should these fall off from different sides
at the same time, they VIII cling 'oEei 3D.
er very strongly and if. aft-ra millEt
thN all he shaken of they viii flN 'o
CDe another in a very Singular manner.
THE ANIMATED SPIDER Cut q hi'
of cork in hn form of "A spider. furnish
II with eight white thread legs. and rur
throngh the body a long black silE
thread. bv which hang uD the imitation
insect. Excite a rod of cealiG-- va X
and another Of glass. both Wv m"auS 'i
a rubber and hold 'hrm on each side 30
the spider which will vihra,e backward
and forward
DANCTNG BRAN.-SunpOrt y ulrp OF
glass. previously warmed uDln tW,
hooks. one AT each end. and place soms
bran underneath then rub The upnaI
side Of the glass with y black sill hau'
kerchiaf or niece Of flannel. Hua fhs
bran will dance M and down urder +
with much Tapiditv.
THE ENCITABLE BALL.-Warm ar'
excite a piece of brown uap"r rs hef'r
lav it on table. and place upou j. 81
bali. made Of eldpr-pith about tlts SiZ.
Of a pea the ball viii immediately rUf
across the paper; and. if needle Do
pointed toward g. IL viii again run p,
another part. and So ON for consider
able time.
ADHEEING SE-QTILLS-If
piece OF paper hc placed uu "a Smn0.
table and then rubbed smar'ly v5'h Tn
dia rubber. the eipctriri'. vi'| T.. s..
great that two uT iiIrsr Juiil~ DIa'
bp made 10 adhere 20 -H- FER sid. n
the paper after r. has h-.-l T..-.rt 'r ID
the tabIe-IHe Cott,gs H.urHt-