New-York tribune., 1896-03-29
EXIlfINE THE VACUUM TUBES.
THE TR1R1TNE'S EXHIBIT GREATLY IN
TEREsTs ALL CLASSES OF PEOPLE.

TT .rropDs ELECTRICIANS AND OTHERS UN-
1,s,-A1. OPPORTUNITIES TO WITNESS RAY
EXPERIMENTS - SOME OF THE con-
MENTs MADE By oNLooKERs
The Tribune exhibit of vacuum tubes continues 10
attract the attention OF all classes OF people as
nothing in the way of garng posters could possibly
do This refined method OF advertising especially
attracts every intelligent reader and delights me-
chanics and many expressions OF approNaI hd'o
come from those engaged in electrical "oih' De-
cause their duties in making electrical machinery
do not afiorO them opportunity to see expert
ments outside Of their particular line OF work. This
fact has been brought out by the observations made
by onOOheTs.
a workman who knew the meaning and practical
application OF volts and ainperes In producing the
high tension necessary to ucTescencc IN vacuum
tune made the observation that ms WoTh G'u hoI
require tins class OF eApeGtineii.i, "u e . ,
seen the effect produced by The tribune vacuum
tubes. although engaged for years IN eI''u''a
work. and he was Immensely pieased 10 Do aO'e ~
DO SO g.. ,,... ~, came, q" said one observer
It's the northern lights, said another hoth re-
marks were 20 apt that the men must nave D"en
keen observers. although the fact wou4d hot 10
guessed from their working clothes
The impression which seems 10 De general, gained
from ordinary sensational accounts OF laboratory
work. IS that the newly discovered pio!'IIes oi W
the rays from a vacuum tube must proceed rom
a light which IS extremely intense one "hich Is as
much more brilliant. in itct' ihAh inc oi'"i' ar
light that IS brighter t"an a taAo" candle
II through board IKE an h"t'E
people think They must lee 50 inieis" mat 10" eye
cannot look upon them. any more than u "onli he
possible to gaze at the sun nNcily. They do not
know that a perfect insulatOr Il yet 10 hc i0En!
and that high-tcnsiOn electricity VIII go through
anything "A fact which explains perhaps why some
high-Vacuum tubes have been spoiled IN the 'UnIt
to use the highest pressure obaina0lc in order 10
reduce the time exposure OF plates 10 the honiGeA
rays.
one observer In Brooklyn could SEQ no mysterious
effect in a fluorcscent light, but he never couii
understand why they always wound color"d strings
around copper wires when they used them IN cl'c-
trical work" lie was referred the Century
meni.
Tho line Of experiment now meeting with favor
among inventors is To discover FIRST ana then patent
the fiuorescent substance best adapted for showing
the shadows produced upon II by the rays
and to anticipate all others in making CONNER
cialIy profitable use Of this wonderful discovery
There a number OF substances which havc tho
peculiar property OF fuOrescence even under or
dlnary light but the very bcst for ray Use has
not vet been discovered unless. perhaps. the great
R0ntgen himself discovered II In the barum-
plat!na cyanide which he has freely made known
10 all tho world
The head boOkkecper AT The Tribune uptown
Office No i2i2 Broadway. IL 30 rushed with work
that he thinks the X rays the very thing 10
show him photographed IN tho condition - which
his work IL bringing him. namely skeleton ". tn
"A cloud OF figures and questions surrounding his
head. He a German. and can make himself under
stood in the American language TO som" extent but
prefers to refer inquirers TO The Tribunes sign In
he win