Los Angeles herald., 1907-04-08
SOME FEATS OF PHOTOGRAPHY
rrnm the baltimore American.

AnONt ANAeNAENWs
THAT the chemical action OF colored light
has no power to produce Y ,gments of
the same color as the lih- itself, but
the problem of reproducing the colors
of objects was solved by the principles
lof Interference" discovery of New
tons that is exemplifled In the -olors OF
soap bubbles and mother Of pearl, ana
which is an application OF eftain theor-
les in regard to diuerent wave-lengths.
The first pictures IN It's =. ocess were
brighter than the original objects, but
this Is being corrected through careful
Experiments. Prof. Roentgen of Wurz-
burg gave to he medical world that
Invaluable aid the X-ray machine.
Since metal and one are opaq to IL,
the machine discovers deformed joints,
splntered bones, bullets or bits of she'll.
BY its means great suffering has been
relieved.
Owe II Many Debts
The assertion. that photography is a
means of life saving seems queer until
| 1t is understood that by its use figures,
pictures and letters are now transferred
| to watches and clocks and the men VINO
once lost their eyesight and often their
entire health at the '.ork, are now
emancipated from 1t. Astronomy owes
great debt to this art At various
places throughout tNo world there are
| ODSerNatOrleS eTeCIeu ny
or colleges where pictures of the heav-
ems are made each night, 90 be carefully
developed and forwarded to headquar-
| ters. There they are labeled and put
away with the care and precision OF q
newspaper file. When the next conslgn-
ment of plates comes in these are taken
out and a comparison made to snow
any changes in the geography OF the
heavens. Very often important d1scoV-
I. hU this means.
Painters Tried to XIII 1t
The first work was crude. The alche-
Imists of long dead ages had found out
that a solution could be made OF silver
| in muriatic acid; that 1t made Whlte
salt called chloride of silver. Daguerre
saw that If a sheet of pap~r be covered
with this and exposed to the sun, what
ever reflection it had caught would be
fixed there, the darker shadows show
| ing light and the lighter ones dark.
Many other people seem to have tnouSnt
| of this, but none Of them were success
| full with the work. AS early as li94
factory was started in Soho, LONDON
for the purpose of making pictures by
the help of the sun, but a wise artist,
named Beechey, was instrumental in
having it closed, seeing that 1t meant
death to the portrait painters trade,
and the world has learned nothing OF
the methods that were then used.
Many inventions
In a measure all the scientific world
has made some contribution to the per-
fection of the art of photography. The
discovery of iodine in 1872, of hypo-
sulphate of soda in 1919, and the use OF
collodion in 1850, all made the art of
today a possibility. So did the work OF
j. Holland a London optician OF the
middle of the eighteenth century, VINO
first constructed the double achromatic
|cctnbination of lenses. Daguerre made
his pictures on copper. In 1880 Fox Tai
bot of England found that he could
print the likeness on paper, and he pat
ented the process. In 1850 Scott Archer
of England found that by using fllm
OF collodion the shapes could be hXed
on glass and pictures on paper printed
frcm this thus the negative came into
use.
Moving Pictures
The man who came to us long ago
and with his big magic lantern showed
pictures OF Yellowstone park, the 4o-
semitic valley or illustrated Ten
Nights in Bar Room" as he read,
has passed far inland to the remotest
log school houses. The stereoptlcon
man. whose pictures would otherwise
lack many listeners, will soon follow
him, for close on their heels COM the
moving pictures, the most wonderful
accomplishment of modern photography.
Many attempts were made before this
invention was completed. Muybridge
used up half a million plates at the
Sacramento race track in 1872, getting
his famous series of horses in different
poses. The authors edition of the work
he produced after this is valued at
s25O0. The biograph was patented in
America in 1896.
French Trick Films
The making of moving pictures for
use in vaudeville performances affords
a livelihood for a large number of peo-
pie. Most of the American made films
Originate in New York. When film
1000 feet long is to be made no small
amount of ingenuity is required. To
secure the effect of smoke from dis
charged pistol, a handful of talcum
powder is thrown. The interior of big
hall or theater with stage parapher-
MALTA, or the roof of a skyscraper fur
nish much of The Gene, although the
hills and dales of Bronx park appear
often when the audience is to be led
close to nature The l0ng hill down
which so many men, women and chill
dren roll or creep is a familiar bluff on
Long Island. Actors and actresses
dress for the parts and ~ many laugh
able or tragic feats that lne quivering
films reproduce later over the heads of
delighted theatergoers. The French are
clever at devising trick Elms, and those
scenes which have little rooster
trade mark in the corner are all for
eign make