Iowa County democrat. [volume] (Mineral Point, Wis.) 1877-1938, 1890-10-10
TO SEE HY ELECTRICITY.


An Apparatus For the Eye rs the Phono-
graph for the Ear.
Il is said to be possible that modern
electricians may succeed in constructing
Il device that will do for the sense of
sight what the telephone does for the
sense of hearing, but the prospects Tor
such an achievement are not particularly
bright The possibility has been de-
monstra.ed eXperlmentaly, says Iron. but
the practical difficulties II the way of
carrying out the idea are very great. 1t
Is ", Il known that certain salts Of copper
and silver, for example, generate electric
currents when exposed to the light, and,
conversely electric currents will produce
IN these salts changes corresponding TO
those made by light. If Strongly-ilumi-
mated object Is placed IN front of a trans
mltter covered with such a salt electrical
currents will I've generated which Will
vary in intensity according to the in
tensity of the light falling on different
parts of the surface. IT, now. these var
IOus currents were carried to a receiver
similar ito a trausmltter they would pro-
duCe on its surface changes like those
wrought 10y light on the surface Il the
trduSmltter. According to the Electrical
World an apparatus has been proposed
based upon the property peculiar 10
Seeuium that its electrical existence
changes with the intensity of light. For
tranSmltter the Selenium cells are
arranged in squares like a checkerboard.
The greater the number the more efficient
would the apparatus be. Each of these
is connected with the electromagnetic in
the receiver. The latter Is composed Of
a mirror constructed of thin strips of steel,
to each of which several of the electro
magnets are attached. 4 strongly iIlumi-
mated body being placed in front of the
SelenIum tranSmitter the electrical resist
ence Of the various cells varies accord
ing TO the intensity of the light as in the
case of salts of copper and silver.
The various currents affect the eleCtIo-
magnet In different degrees, the results
being that the strips of saeI are bent ir-
regularly, turning the mirror into an
aggregation of surfaces, very slightly
warped, which will throw an image on a
screen. The main difficulty in the way of
the realization of such an idea rs seeing by
electricy lies in the necessary complexity
Of an apparatus which shall enable in
Vulnerable points in the transmitterS and
receivers to be actuated SImultant ouSly in
perfect independence. and also in perfect
correspondence, but it is quite possible
actual use what might be something
more than a mere plaything. In defen-
sive war telescope ot indefinite length
would certainly be ofyalua. With buried
wires and concealed viSors general
might watch his adversary's movements
a. times when this would mean victory
instead of defeat.
Hop sing Sentenced.
MILwAULEE. Oct. Hop Sing, the
| lecherouS chlnaman, w.aS I'm ed SlO0 and
/ cost and six months Imprisonment. Pau
| line BartSch and Lizzie RiSch. the two
| girls we're sent to the House of the Good
| Shepard.
German watch that is on exhibition
| in Plttsburg window is probably the
| thinnest time piece in the world. In Is
not more than an eight of an inch thick,
| and the works themselves seem no thicker
| than cardboard