, 1879-02-10
ELECTRIC LIGHTING.
Some Interesting Explanations.

rrh tt,n.,. ~ tI,., ,,,r I'll, ll1b+ 4. co,,p1n ~
!"e t"eo's y. l'o s.e.''@ ',e"s ~, 10 >.p',''o ~
being expressed IN feW words. lilankh To the
mutual intcrchanGcabillty of all furnls Of force,
uo ara ahte To transfcr forco from ono place TO
onothcr in onn ,hnpc. md At the cnd of ia
aho'le1 ~ ono s"ap', ....ss ."' .nu VI 'te
journey 10 use " Ill anothet e1lape' JUST as VIC
eau send money by post III tho form OF notes
md get Il changed Into gold at it's destination.
na'. uatess, =. M WIN ~ ". 1s.a w..
caeet 1he tFa"elefe"ee' sol'o post'"'' u 1oat or
dissinatca on tic roads ano, moreover, the
transformation Mt the end Is not usually
cfrc,tel without further cost, II VIC transmit
the forcc IN Tho .hane os hcat there l.. the Ia.
WV w. ~. -. ~ .,t..,, - ,.sa.t. .,.s
ny eonhhetion OF Iao'ataon' IL .! "'otioh' tneEo
10 the loss by frletton AEnn, II, at tile end OF
NJ hcat. It Ia obviously )salyaptuccous 10 trims.
~ "ont' :. - - -, =. ~. s'-a" A"-
ief IL u, us 'ot1h " M"s'' a. s"e'u 20 ~ eas5
method o1 ttanttorm!ng fhoI'oh 'hto nest.
espcctally II high Temperature is dcatred. To
solyo al, these difficulties, We turn to
wv" 49, .,.,r.,s. ,.h;,,, !, har,,S ~, ,,.,,
'no e.....s ,.,s .,,s..' ~, 49,, -. .sa", s
parlson ttie ior Q. 'oEGo mllcH ~ oalcfs ~ ane
torms ~ eotnunst,ole or eApoe!se eatpstalees!'
Just as heat Is rouahly tn worst u thih respect.
tt4e ta' lsls = u Iss.. T., .uea ~ liz liz
Transmission; t tee ~, ~ '. sss.n ~ w st
conductor thfouNh WHEEL INC e!ectflr current
phssea, II o!icfe tone !eattancc 10 I,e cicc.tle
current; anu the amount oi iolee winch IL Iaxet,
from Ing esrfoHt anu cnahkeu 1nlo aeat at,ti
thus dlsslphtea e1aety Isopprln,nai 10 tl,ls
resistance; ntn nclen !ealuGe tne Ml!olo .lstnty
ai.d m7atcry OF t,s c!ectIie ;!1lt. N9t on!y uocs
tilit property ennote ~ u ulsn'es Witno',t rlae
t!cal !f1at INC !oso uur!is lIhnsMlsslon oY tNe
simple meana 81 "sane ,s,s y, eopper s
wires to convey Inc but y ehaolcs " 70
turn exaetly as huet ot ~ ihue VI the 1ofec
continued In the current INTO heat a. tle rctlsc
paint or points Wa aeslfe. y tac n'atcF'lt!s
would stand tho tleat u Would DC 4 siIunse
question In PREPARATION to desias % Tug dmen-
aions VI platinum Wits "h'eh' waeh p1aeca III
Vtyen circuit, Wotia % Ih.sc" 70 ans given
temperature llp to Inc 1ntciacst SOAR meat; =
would merely oo necessary 10 IMsafe ihat II
should be OF DIMENSIONS stali enough NM have
sufficient rcs!haneu to lorco tue electric current
TO ViTe up the heat rctlulsttt 10 9ilect tic ac
sired increase Of tenlucratur". ny no other
n,eana uni III no nlllcr 1ofm can W. convey
| foEee to small body, niu, w shanGinE u SUI
denly Into heat, raise TIC SINAI! hody alone tn
an intense ,l,ltl co'isiant Lieut. "t!i9tit IT, bcnH
ln the ''stg!'Gof't'ou o. "tner s,na,' cs; AZ
electric lighting consists In tl!s application u
this principle 10 prac1cet all1 tile nlclcht eys'
TENS dtlIer only tn tho meaus by which tho
requisite rcsslanre Is produced. VI t'icsc tnEen
Il Is supposed that tho alleged inventions of
Edison bc!unE) produces tnp required sora'ixca
resistance ty 1ncans, et ano wifo of sone
refractory metal, which IL u sury bad conductor,
two. Another produces tsmt tesista'lcs by fore.
| lug tho current 10 pass along hno n!cce oi
| charcoal, either tas In ihc sawycr anu MANI
laWpl III tho form Ut thin needle placed ~ MI
at,lluAUtere OF Nitrogen to !rcyeHt combination.
| or las in illu Rc.nscr and Werdcrtiaun !a'npS)
bs passing 1t through t1nclY'post'ted penc! OF
carbon, which touches larger piece, nlhl III
which tiu effect Of combustion s rscutraltxetl by
the gradual ntiva1.cc of 'lle thin1Icr raFbut'. The
third tvpc, 10 which oil tl'u more inuortant
forms bclong, proaueos !llu required resistance
| by compelling tle electricity to pass from ous
| carbon point 10 another over very abort Inter
val OF spacr, which s Hra0Isi, III doubt, by IN.
cA.Mcsccnt particles OF carbon torn frum the
carbon points By the electric current, Al1tl car
rled with IL Ia Its course. The resistance II
| forlcl by such III Interval, ult,! consequently
The degree OF hrat generated within II, Is elIoT.
u1pus, mil thus tho particles Of carbon aro
rafscd to heat which makes then, glye out
ijcht Of the intcuscst whtte,less. unfortunasc-
ly Tho Resistance, though always euur.nous, Ia
subject 10 great turtunltons, due to minute In.
! uur1ttes or incnuatl.cs In tho rarbor, u1l thla
mny Increase liz rcststuce 10 tnurll a. to bt.,,
tic current altogether, mi! thus exltnsufsi, l,u
iahts: OF, on Ills other hand, may 1iialulsh the
rrsistnnce 50 greatly a. to cause tie light to
| sjnk: uni thus IL IS OF TIC greatest Importance
r., remoyo or minimize these iluctuatlons, a,ti
esch of thu different systems lint fall under
fhfs heal hns different device for o!TcrtIug It..
| it"t 49, ~ hnrn sniJ abnve tln whnlu mai Ter