Huntsville gazette., 1891-10-03
IN THE ELECTRICAL WORLD.

Edison is now at work on an cleo
trio motor to replace the ordinary loco
motive. 1t is designed to take up cleo
tricity from central rail and to de-
velop at least l, 600 horse power.
Prof. Barrett chief of the depart
nient of electricity of the Worlds Fair,
has already received applications for
space enough to fill building twice
the size of that set aside for this depart
ment.
AT the naval exposition in London,
there was colossal electric lamp con-
structed by the admiralty. 1t gives a
light equal to that of 10000 candles,
and is placed in model lighthouse,
fifty-six meters above the ground
Paris La Nature.
Dentists declare that by means of
the electric light they are able to keep
their patients teeth in much better con-
dition than formerly, as the light en-
ables them to discover minute cavities
which without its use would not be no.
ticed.
There has just been completed in
Munich huge microscope, with a mag
nifying power of IL, 900 linear perspec-
tive. Electricity is brought into SER
vice in the operation of the great in
strument The cost of the microscope
is IS, $50.
9 Sir Edward Watkin. the English
railway magnate, proposes to have at his
chalet, on the summit of the Welsh
mountain, "Snowden," the most pow
erful electrical light in the world. 1t
will be visible over the greater part of
Wales, and, it is thought over certain
parts of England and Ireland.
A novel method of fishing is being
used off San Diego, Cal Incandescent
electric lights are lowered into the
water at night and large net is placed
below them. The fish are attracted by
the glare. and are plainly visible. When
sufficiently numerous the net is hauled
up. The catches are enormous.
For such a small country, Belgium
has made great progress in the adoption
of electric lights. The city of Brussels
has 544 arcs and 9, 5S7 incandescents.
Client has 222 arcs and 1881 mean
descents; Antwerp has 240 arcs and
/, 4sl incandescents; Liege has 3S4 arcs,
2, 040 incandescents; Verviers has 655
arcs and 2, 423 incandescents Electrical
Review.
Very satisfactory results are now
being obtained by some of the English
paper manufacturers in bleaching pa
per by electricity, the process render
ing the paper perfectly white, without
in the least injuring its strength. This
process in question depends on the use
of solution of magnesium chloride,
which is decomposed by the action of a
strong electric current into chlorine
oxygen on the one hand, and into mag
nesium and hydrogen on the other.
Plates of platinum are used as cleo
trodes.
The first application of an illumi-
mated sight to an ordnance was made by
the Chilians during the late war in
Peru. In 1879, during the lombard
ment of Callao, operations were carried
on after dark by the aid of
luminous sights. The method
employed in this case was, as is
general in carrying out new ideas,
a very crude one. 1t consisted
simply in fixing short length of plati-
mum wire in the place of the fore sight
and heating it to incandescence by
means of a primary battery during the
period of time required to sight the gun.
This manner of lighting up the sight
worked So satisfactorily and was of
such assistance to the gunners that fur
Their attention was directed to the SUBJ
ject and great improvements have been
made.