The Indianapolis journal. [volume] (Indianapolis [Ind.]) 1867-1904, 1897-03-17

faces the reflector disc or negative pole
and is painted with sulphide of calcium, an
exit emely phoSphorescent substance. w hen
the negative pole of the lamp is connected
with an induction coil the current II, as IL
were. concentrated by the little disc III the
lamp. and q constant stream OF Faulanl
electric matter flows from IL and bomDaruS
the painted sheet of mica. which immeulate-
ly CLOVIS with an intensely brilliant phos-
This Is Puiujs. lamp as it exists to-day
The heat evolved from IL Is infnitesimal In
onantitv Nearly all of the energy put into
il /. converted into light. II Is. therefore.
the nearest possible approach 10 cola nsnt
that has yet been made. But II is not IN
it's present stage available TOT sehetaI
lighting purposes. Puluj Is experimenting
with a view to arriving at a solution OF
the obstacle. 1t is his belief that the gen
eral advancement of lighting and the solu-
lion of the problem of making light entire.
ly without heat will be found ny cnemicai
means. He is carrying on a series al hi
vestigations TO the end of producing A
chemical conversion of the ether into light
II IS not easy TO imagine how TINS - 10
be done. but such is the statement, ru ,.,i;
some dav base an ether system OF hent
production on his little lamp; He Is seek
ing to devise some method TOR oscilau"s
the ether so as 10 produce llsnt- -, a.
Tho man who maintains that the sun uo
move will declare that il is also the sour s
of light But the modern scientiSt. M ,,s
ocouiescing i'm the fact will add that light
is a condition of the surrounding elIlel'
which may on occasion be disturpeo 81 o. 80
illumination ut a certain point. rms polnI
NAV be a Puluj lamp or some otner "S'-i IT,
it matters not just now. ne ooJ n,s,r -, ton
sought is the method OF coh me- .I.s,
Light travels at the rate OF ls5.ovO mics a
second In travelling at this great sPee,u,
the ether or atmosphere which conveys t.e
light is vibrated IN and DOWN, siuem v,as
and crosswise at the rate of many TRITON
oscillations per second. Thus IL no, Oily
goes forward at great speed, put ~ aiso
vibrates in its passage. To MAKE hsht vi
This nature il would. therefore. be neces-
sorv To cause the ether to oscillate AT a
tremendous rate Professor Lodge est
mates that to produce ether WaNts oo oiie
metre in length would require 80, 80.
an lar is discharged of its electricity, the
latter disturbs the ether SURROUNDING th.
lar and carves il into waves when tTan oei
away into space with velocity OF le1"D
miles ner second the same velocity rs that
Of light But the oscillatory power Is not
sufficient to produce light. Oscillators Raw
been made with a , eapae,.y TOT or 200 miles
long but the rate Of heir oscillation tI91
complete swings per second) - hot sum.
cient for practical purposes. Inc oplect
aimed al then by scie l,ists, Is TO produce
an oscillation of electrical waves which
will equal the oscillation of the ether waen
" wrought up TO a light-givihg pitch.
II is the intention Of Puluj TO bridge Over
oar, 81 the intervening gan by means OF
certain chemical improVeWt Its III his lamp
In A recent lecture he stated That bfertZcin
RAYS or electrical oscillations generated Dy
Ieyden lar discharges. varied from ,Wp 'o)
10 Ia 600 A6 per second 2ccC riding To the size
Of the lar, but that this would have To be
Increased 10 100. 000. 600 100000 -four hundred
fril,ions) oscillations per second before they
would become visible as red light Some
a inception OF what this means may be had
by remembering that a tuning fork vibrat-
ing at the rate of 100 oscillations per sec
ond. would be compelled TO vibrate 1.2O1
years in Older TO encompass this number u
oscillations.