Lincoln County leader. [volume] (Toledo, Lincoln County, Or.) 1893-1987, 1903-11-13
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The sixth sense" by which blind
persons perceive certain objects, is at
tributed by DR.. Emile Javel, who mas
been blind several years, to sensitive
ness of the skin to obscure radlatlons
that do not affect the eyes.
Attention has been called by Il.
Bohm to two new forms of incandes-
cent lamps. In both, the lower half OF
the bulb is of fluted glass, which, act
ing as row of lenses, concentrates the
light downwards, and gives the special
advantage of strong illumination dl-
rectly beneath the lamp. One form mas
the ordinary filament with the upper
half of the bulb Of opal glass, while
the other has zigzag horizontal fla
ment and top of clear glass.
A new alloy for bearings subjected
to heavy loads, such as those OF rail-
way axles, is described by G. A. Cla-
mer as consisting Of sixty-four parts OF
copper, five of tin, thirty of lead and
one of nickel. The metal casts well
and is easily worked. Its large proper
ton of lead greatly reduces wear, and
when used as bearing for journal
81 inches in diameter by 312 long, run
at 525 revolutions per minute and load,
ed 10 one thousand pounds per square
inch. the loss in weight was but n
fifth of a grain in one hundred thou
sand revolutions. Under the same con-
ditions, the wear of gun metal of vary
ing proportions Of copper and tin was
from 2h to 4 grains.
A new form of the "fac simile tele-
graph" by which message, written
at the transmitting end, Is reproduced
at the receiving end, has been Invent
ed in Germany under the name of the
"telechirograph." The message Is writ
ten upon a sheet Of paper with lead
held in pencil having flexible connec-
tions with two rheostats. AS 1t moves
over the paper. shaping the letters, the
pencil shifts sliding contacts which
vary the electrical resistance. At the
receiving end two electromagnetic, in
fuenced by the changing currents
transmitted, govern the movements OF
small mirror which, by the aid of
beam Of light, concentrated to point
by lenses, reproduces the writing on a
sheet of sensitized paper, the point of
light following exactly the movements
of the point Of the pencil at the other
end of the line.
The interest in the strange property
possessed conspicuously by such sub
stances as uranium, thorium and radi-
um, Of giving off spontaneously radia-
tions that penetrate solid bodies and
affect Photographic plates, is kept at
high pitch by frequent new observa-
tions and discoveries. Prof. e. Ruther.
ford, of McGill University, has enumer-
ated three distinct types Of radiation
, emanating from the substances in
rays, which consist Of flights Of mate.
rial particles, carrying a positive elec.
trio charge, and having very high
| velocity; the second are the beta rays
apparently the same as the cathode
rays of ordinary vacuum tubes, but
travelling faster; and the third, the
| gamma rays, which are very similar
/ to X-rays. In addition, some OF the
substances, as thorium, give off 6
J fourth emanation, which appears to bt
|, matter in the gaseous state, and cal
, be carried along by air streams. Tho
, rum, from which all the radioactive
{ constituent has been removed, will, il
t few weeks yield as much as before.