How the picture looked after being sent from Rome by radio and decoded
on Professor Korn’s machine.
]
The above is an example of one of the rather odd methods of “sending
pictures by radio.” The picture to be sent is divided into many small
squares with varying values of dark in the squares. Seventeen different
grades of light in these squares are translated into seventeen letters
printed on a tape.
This coded picture is transmitted to a distant place and there decoded
into dots of sizes corresponding to the seventeen values, and each dot
placed in its corresponding square on a white paper. The collection of
large dots builds up the dark areas; a similar collection of smaller
dots makes up the halftones; and still other collections of very minute
dots make up the light areas. (_From the New York World._)
[Illustration: [Photographs]]
A telegraphic code scheme in which points in a picture are determined by
the crossing of straight lines, ordinates and abscissas, and in which
the shades of light, of gray, and of black which make up the picture are
also indicated by letters.
This coded information is telegraphed to the distant stations where the
receiving artist determines the location of these points and shades by
(1) a similar pair of crossed straight lines, and (2) letters indicating
the light values to be washed in on paper.
The process depends for its success largely on the skill and cleverness
of the receiving artist, and is hardly more than a “filler-in” pending
the adaption of the directly photographic process. (_Courtesy Science
and Invention._)
[Illustration: [Schematic]]