know every available development of science and engineering has been utilized to get the story to the reader in the shortest possible time and now the latest miracle of news gathering sending pictures by wire has lifted the curtain on a new era in newspaper history traveling almost as fast as the telephone story wired photo is now go across the continent with the speed of light although it took years to perfect the technique of sending pictures by wire is comparatively simple it's not a matter of sending the whole picture at once but of separating the picture into a fine line sending those lines over a wire and assembling them at the other end let's suppose we have a picture or a pattern which we want to send to another location and the only way to send it is through a small tube for a purpose we'll make this picture on closely wound string now if we start at one end of the picture taking it line by line or string by string in proper order we can run the string through the two and assemble it at the other end line by line until we again have the original pattern that is exactly what we do in wired photo transmission but we now take the picture of logic electrically and translate it into units that we can send over a wire units are lined all of the same width but of different tones of great if we have a given number of lines in a given space the total value of the page the difference between dark gray and light gray is determined by the density of the lines if the lines vary in density they will form a pattern instead of changing lines into a pattern wired for to a transmission is simply a matter of breaking up the pattern  picture in july and this process is called a light is focused on the picture and as the drummer evolves this light stands the picture from top to bottom on this line at the same time the drum is moving slowly along in front of the light so that every part of the picture is dan if we stop the drop and look inside the case then remove the condensing and that refining apparatus leaving only the optical system we see that as this light strikes each part of the picture it is reflected back through a lens and aperture the aperture allows only one hundred seven inch of the picture to pass through out of time so that the picture is scanned in line the light that gets through the aperture goes into the photo electric cell itself contains a plate made of a metal that has a distinct reaction to light electric current will pass more freely through the plate when it is exposed to a lot of light very little electric current through if the cell is dark therefore when there is a white spot on the picture a lot of light is reflected from it into the photo electric cell and a lot of current passes through the plate if there is a dark spot on the pictures little or no light is reflected from it on to the pla and very little current will pass through it the current is that and radiated into the receiver of the telephone set where the telephone calls pick up the energy or current and send it over the line to the wired photo receiving on the receiving machine these currents are then transferred into corresponding lines on a photographic negative wrapped on a similar drum let's stop this drum and look inside the light that reaches the negative comes from a quickly and opening on this machine similar to the one on the sending machine allows only a small amount of light to go through to the negative at one time the whole story of wired photo transmission then is simply  this lamp light scans the original picture a white spot on the picture makes a lot of current lots of current makes lots of light on the receiving machine and so exposes the negative more heavily at that point a black spot on the picture reflects no light back into the photo electric cell no current passes over the telephone line the neon tube remains dim and the negative is not exposed we have merely  the negative now go through the regular routine it is developed and printed and made into i have to own engraving called a cut put into the form it goes with the page to be made into a mat then then a part of the before the advent of wired photos days were required to send a picture from coast to coast by train and hours playing now it is only a matter of minutes after a news event has occurred before newspapers all over the country are carrying pictures that tell the story more graphically and completely than the printed word pictures sent from any location by simply picking up a telephone and calling the paper