The Iowa plain dealer. [volume] (New Oregon, Howard County, Iowa) 1867-1895, 1873-10-31
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sslaa ~ili I'll scs. A. shss Time
l lill ~ss lnstsdur~l arrtersia''nf !
sam II wrne, N h~ila Physical l.a.
h@tssry ~ ,hh te,ltte. ne ~ls~
leri.,nss vvtr uncertain about that ~ata
''l'h, siea,. " What raall II mean !
The, scratched thur hrad. 1hr,
sae~ea u II. probable mean,nr lle
majari,, ,haarh,i, W. medical Labor
a,ers, anl that the agricultural college
was ahea, h engage In thu manufacture
of pm dvrsars A In. one wiser than
thu re., NJ, upon plan. liz consulted
tho ,lir,isnar., There hc found that
physical haa something Il N with mus.
calar. II wns enough, H. callel tho
members about HIN. anil With tears III
hh eyes, infsruea them thu, sha arrro-
priation called fur was intended fra
gymnasium. The young mcn aul wo.
mon wcrc 10 have building IN which
shcy coull dc,elop their muscle. They
would train themselves fvr circus man
and prize fighters. Suffice - say iha,
tho word physical, doubtless prevented
~ from obtaining the sum asked for,
Tho study II I'll, sirr II tho study of
nature, aud MI natural phenomena.
The stud, Il largely illustrated by
experiments Some of tho students,
especially thu girls, think physics Is
lawful tough anl yct they aami.
TINT II Il mice In order to show
you that |. Ii mice anil not 10 lawful
tough.' rropose to give you disser.-
ation upon ono u tho toughest sub
jee's II lle course JUS, finished, Tho
"l'ndulalors Theory Of Light
Rather hig-seunilng subject for mr.
To attack. perhaps, Ius follow mo aa'l
sec II II Ii ut easy. Let us walk Gu.
anne starlight evening and take look
ni thu sk,. sce that tviukling star
Millions u miles seperate you from II.
Tho ligli, by which soa spe !, has, per.
haps, occupied ,eats IN ,rasefslng Tho
intervening spaee. W. ,hl. sumo light
will flash ncless thu Hl,aea between III
anl tho lnoen, In q little more than q
second.
/ II rrae'. tho in non In q sNif. railway
trai,,, travelling night and dny, would
lea,,ire abput year llo~ deea the
light feaeh IN from the STAR nars II
travel 4 4pace void II maitrri Think
NJ H. What Il lightf Il Il matter |
ran YIN conceive II anything reaching
~ frnn TIN stnr. without ranle inter.
ssning Meilam NJ | Il il un,hinka.
lilo. t.l,hor something must dart aerorr
the sraae lying beiwern. and Hise ~
tho sensation u light. Or, some firm u
motive Il propAgated fron tho star u
thu eye, and this motion occasions that
sensation which ~ call light =
This last rnpposl'io i.eor.ect. Na'
Win, Lfiug. til. mo,lpu u usf Tbs
nitf No Tin air Il tho medium which
ats IL the propagation II tt',nl hu'
Mt In TINT light Sound ranunt 10 rrot
,luee,l IN bill jar ifam whieh ,lr MI
has Luen al~trarte'l, Int ray II liah'
darts through tho vacuum "a easily q.
|, through, pann u glar.. VIA. II !
, then that meta IA thu ne,linM Ia The
transmission II light I Nuw w ar,
coming to .ha. terr'ble bugbuar " la1,
| students, tho ,lndnlntevy ,heory a light
J, Throughout all spnee .hero exist ton
neuu. lrlra.e Substance eal,nl ethcr
This ellpt ills tho in..u,lanetary spaces
Iene'ralea II tho regions q thu reln"t
/ eTi stars. Exists abmlt the ultina,,
particles Ut MI hpdics md Ii called In
tmlli,rahlu matter beaauso II cannot Ii,
| weighed hy my maans In our power
i Thin etller IL m,re liko d jelly In Ii
i properties lhan like u gas. Shake en,
, portion II |. and II shakes MI aruun.
H. Thu .ligl,ses moliou al any poin
il trspagatei In eyrry direction NJ sepa
i rated .plerieal waves. rurl, NJ thet
! ma.lo on water when u stone Il throw
. into Il,
7 Now tl,nro ladies whiph give II
4 light ha,e their atoms IN .iate II mp
7 III vibration. lIaek and furlh tl,e rar
tirlcs swing nerura their renters II rca
! Will, valoeity whiuh l. l,enneei,al,lr
Tho ether Il disturbed. !. Ii ihuw,
: Into Tho mrs, beautiful eri.pa.ion. nn'
un'lulationr. Sneh II In elasticity tim
! 4 disturbance In ous portion Il ielt II
y distance u d hundred aud eight, Nv
|, thousand milps In second of line
|. 'l'lwrs ethereal impulses strike tho deli
!. cate nerves n tho back of Tho sye Mn,
i ean.r that sensatiuti which wc call lirit