Lincoln County leader. [volume] (Toledo, Lincoln County, Or.) 1893-1987, 1906-10-19
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Silver-on-glasS mirrors nave Deen
long familiar. In new process, an
English electrician deposits copper
from the black oxide by electrolytic
means, and produces very brilliant mir
rors of thin film of copper on glass.
A diamond burning in the electric
arc was lately exhibited on a screen
by Sir William Crookes. The stone could
be seen to sprout and swell and blacken
under the intense heat until nothing
remained but a swollen lump of graph
lte.
Recent corrections of surveys show
that India is placed on the worlds
maps six hundred feet northward and
213 miles eastward of its true posi-
ton. Attitudes are five to thirty-five
feet or more in error, Mt. Everests
corrected height being 29,141 feet in
stead of 29,002 as usually given.
Carefully suspended thermometers
have shown German chemist very
material differences in the temperature
of an ordinary air oven, whether heat
ed by gas or electricity, with metallic
or porcelain walls, with air ventilator
open or shut. The temperature III two
of the corners is usually much higher
often as much as II degrees c.
than it is in the other two corners or
center.
An electrical diylning rod, claimed
to operate more certainly and scien-
| tifcally than the ancient and dishonor-
ed twig, has been, devised by Adolph
Schmid Swiss engineer. 1t seems to
consist essentially of a glass-covered box
enclosing a coil of insulated wire in
which a slightly magnetiZed needle is
free to rotate over graduated dial.
When the apparatus is placed over
subterranean water, with the axis of
the coil in the magnetic meridian, the
needle, it is asserted, oscillates more or
less rapidly for two to ten and even
up to fifty degrees.
A continuous change in attitudes in
mountainous regions, especially in the
Swiss and Austrian Alps, has been
noted by NJ. de yarigny, a Swiss geolo-
gist. Many villages in the Canton
Valais and in the Bernese Oberland
have been raised or lowered from
twelve to thirty feet in the last six
years, and the SUBMITS of mountains
have undergone changes quite as great.
The numerous slight earthquakes are
suspected of being the chief cause of
the phenomenon, or at least they ac-
company it, while they produce avail
anches in number now increasing.
A correspondent of Nature remarks
that the new known facts seem to re.
qure a modification of the statement
found in some textbooks that "it is
impossible to say whether a flash OF
lightning moves from a cloud to the
earth or in the opposite direction
Many photographs of lightning taken
in the Transvaal show that, in all
cases, the discharges were from cloud
to cloud, or from the clouds to the
earth. Quite frequently, the CORE
spondent says, he has observed light.
| ming flashes leaving a cloud for the
. earth, but fading away before reaching
it. The opposite phenomenon has not
been observed.
A recent proposal to construct tele
phone line between New York and Sar
Francisco has called forth an interest
ing criticism, which shows strikingly
how modern methods of practically
instantaneous communication all rount
the globe make the sun, in his daily
5 progress, appear as an extremely slow
coach. The criticism was that even il
the technical difficulties affecting Sc
long line were overcome, the pro
: posed telephone line would possess very
slight Importance, because the business
= hours of San Francisco and New Yorl
: would coincide for only single houl
each day. 1t is one o'clock Afternoon
d in New York when it is ten O'CLOCK
forenoon in San Francisco.