The DeLamar nugget. [volume] (DeLamar, Idaho) 1891-1900, 1896-11-27
LAMP OF THE FUTURE.
The Vacuum Tube VIII Supplant
the Incandesoent Bulb.
Outcome OF the Wonderful Discoveries
of Edison and esla-Probable De-
velopments of the EIec-
trio Current.

The Eight of the future, "accordingto
many electric prophets, will be of still
another sort-lnstead of the concen-
irated intensity of the incandescent
carton, the dilfused glow OF vacuum
tubes, or heatless flame. Geissler, OF
Eonn, who devised the first mercury air
pump, obtained from 1uoreseent glass
tuoes, in which by his air pump he had
rarefed the air or had vaporized solu-
lions, on passing through them an cleo
tric spark, faint light of lovely color,
varying with the kind of yapor row
known as "Geissler tube effects.
Crookcs, of London, made tubes of a
high yacuum-less than one millionth
Of atmospheric atmosphere-and OBJ
tanned in these "Crool1es tubes" such
remarkable phosphorescent effects as
led him to believe that he had discov-
cred a fourth state of matter" more
larefed than gas. Tesla, an inventor
OF daring imaginative genius, g-adu-
ate from Edison's workshop, went
step further by obtaining from current
CT extremely high frequency or quick
oscillation and also of extremely high
tension. an intense electromagnetic
feld-that is, by ''electriffing" sur
faces or terminals from this current, 50
that in the space between there was
intense electric 'stress''-he was able,
by merely placing an exhausted lamp
bulb within this field, to produce a
Glow inside the bulb without use of
conducting wires, and even to show
luminous discharges from his own per-
son at the fnger-tips, like the 'St. FL
mos FIRE" observed at the mast head Of
vessels during electric storms. These
experiments led him to the develop
mcnt OF his mechanical oscilla tor-a
sncll piston vibrating with extreme
r2..i]ity within stroke OF an inch,
which ectuates at high frequency an
electromagnetic generator = and his
electric oscillator, not yet in CONNER
c:Gl application, but from which grea
results are hoped. Pupin, al Columbia
university, has produced similar lu-
mirous effects, using his hc~r,onie sys-
ten Of c0Gdensers. by hel2 af VIII eli he
eXpects 10 render ocean telsTaony rrae-
ticaele. 3aaefarlane Moore, Whila work. |
ing uron sn incandescert lamp Il
which tie light, as in The ras burner,
nay be turned low, with pror0~tinratc
r1y;1~ &c current, found thai the oecil-
Latino CeYiee which he had in~crted for
70 rurr9ro. thin strip Of steel rlall-
'rr and breaking contact Within
~acuurl i;ulb when actucted ~ low
fers'on current, produced IKE effect
n vacurm tubes, and he has ',eea ash
to liCht Il room with 2 rervadirg glow
SO that "oaGing is possible IN any rart
fit. EDISON, by coating +ha irrc- sur
face Of Q glass bulb with fnoroscent
1,aterial, has developed stu etrocge?
I'rht. With a consumption of currcrt
loss thai one-third that of the iccan
'~ccert lamp
TNr'a. tAn pioneer in this fola. is OK
n turn, to make his giow l'eh
y rrilfancy corresponding ratAcT
'r't' 10 &C thar with the inoardes-
'ert l9nn ard the present year IS thUe
~i+ressjom 4 race between +hc rrcGteef
,rGo1~ Ernerican inventors as to which
'hHll first reach the goal. ANY Of these
;vctcras 1cav, it is probable, IN thcir
nraetic@l DEVELOPMENT, be adapted ae
louac devices, obtaining their aotua4
nc or-~cnt from the present d:s4r,bu
re- Tr3 generating systems. and r71l-
M electricity at last a rival Nth e
n chez" mass rs well rs in comfort ard
r.. r. Bowler, in Rar-
oer's Magazine.