Idaho semi-weekly world. [volume] (Idaho City, Idaho Territory) 1875-1908, 1889-10-08
USES OF PHOTOGRAPHY
The Value OF the Art to Scientists. Me
chanics aud Military Men.

y
told It's value in illustration is vel
known to all. Here it has helped pop
ularize artistic work. and cheaper the
cost OF its production to surprising
extent Now but few hours need pas;
before the thought of the artist is made
the Joy OF the reader. drawing. photo
graphic copy. relief plate. and printing
following one another with nineteenth
century speed From the coarse outline
OF the newspaper cut to the wonder
full reproduction OF paintings by the
photogravure process we mount on
stepping-stones OF victorious achieve
mcnts In photography, made to serve
with reliable accuracy the common and
the elevated. the political cartoon and
the edition dc iare. The reproductions
In color OF the works of aquarellis,es are
imitatlvcly deceptive. aud their educa-
tional influence OF incalenabir value.
The uses 10 which science has put
photography are very numerous, from
~ecords Of tho infinitely little TO tho in
hnitely great from microscopy. which
deals with the Invisible. to the vastness
OF astronomical wonders The latest
contribution 10 our knowledge OF the
sun. moon and stars made by photo
graphs taken by the aid OF the power.
ful telescope At tho Lick Observatory
strongly contrast with the researches
into the invisible world 81 nature re-
vealed through the microscope. DIR.
Draper made the first daguerreotype of
the moon In $50; foncault, OF Paris.
arst succeeded In making a picture OF
the sun In 1915; and IL as 1880 before
Prof Bond, Of Harvard College.
made the first daguerreotype of "a star,
liz 1851 DIR. Busch. of koenigsberg,
photographed solar eclipse Two
Socialists. Prof Schuster and MIR
LoekyeT. ia 1882 obtained photograph
Of the spectrum Of the eclipsed sun la
1851 pr. Henry Draper had successful
" photographed ncbula. and later
the spectrum OF star Even the
aurora borealis has been photographed
this year,
la connection with the study OF spec
trum analysis. photography has played
most import part. for IL has recorded
lines no, visible To the naked eye
lines revealed only by the photograph
In that part Of the spectrum ia the vio-
lei and lavender regions, and even be-
yond. where all is dark 10 us.
Ia the study OF stars by this pro
ocdure We learn how some are like our
sun. others glowing masses OF matter
just beginning to burn. and still others
nearly burnt out like Arcturus and Al
dcbaran. We marvel. when We think
how feeble seems the light OF the stars,
10 learn that only As much light can
come through slit 1850 OF an inch as
Is permitted to affect the sensitive
plate. Again, the movement of the
earth would in the two hours required
70 form an Image soon carry the light
on the plate we're there not ingenious
mechanical apparatus by which the inn.
age Is always kept at the same place on
the plate
And now photography Is not only
used for mapping out the known heav.
ems. but the camera reveals TO us the
presence OF stars which the human eye
has not seen For many years Miss
Marin Mitchell and her assistants have
photographed tho ever changing sun
spots Astronomers from all over the
world have met In Paris and arranged
plan Tor using photography 10 OBJ
tain q picture OF the entire heavens
Cameras will be set up in numbers OF
obsersatories in many countries. and
many negatives made OF the entire con-
tents OF the universe, 1t is proposed to
catalogue two millions OF the brightest
starr and note their position with great
precision. ~ until such maps exist
many other astronomical problems can
not be solved. We know. for instance,
that our sun with its planetary system
is voyagiug through space These
charts will help determine the route
and circumstances OF the journey.
In war photography has been used
since the English made pictures in the
Crimea. Balloon photography has be-
come quito an at Balloons are said
TO be perfectly safe from rifle or artillery
fire II seyen hundred yards above the
ground. Electricity is made to play its
part in exposing the plate in the camera
attached TO the balloon During the
Franco PrussiAn var and the siege
OF Paris small Photographic copies
OF valuable documents and daily papers
were made and rolled up into quilts.
which were fastened to oarrler-pigoous
and thas taken 10 their destination with.
out tue lines.
The Eiifel Tower In Paris has been
offered to Prof. Marcy TO enable him to
mako studies in photography of birds In
flight; and very instructive results are
anticipated.
Both IN our army and navy photo
graphic outfits are furnished, aud some
OF our officers have become very expert
Photography may bic applied to survey.
ing. as Lieutenant Reed. OF the United
States army. has described 1t may
also serve for studies In meteorology.
Photographing rifle bullets and cannon
balls In motion has become an every
day matter. but novel experiment Is
said 10 have been made not long since
In Berlin by Prot Treason, who
arranged within cannon bail a sort
OF camera which recorded the charac-
ter OF its olga. A tiny pin-hole adj
mitted light. aad d sensitive plate
within the bali recorded tho twists and
turns OF the projectile in its passage
through the air. The gun was fired