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The March of Radio
357
continually be informed as to whether or not they are doing what they promised to do when they asked for our votes? The prospect is a very interesting one, and it seems that the electorate would be much more conscientiously served if advantage could be taken of its possibilities. We are reminded of the progress of communication by radiophone in the Navy. By its use, the admiral is able to hold the officers to a much more exact observance of orders, with no excuse due to fault in communications — the admiral is able to talk directly to the commanders of the various vessels and so can knowthat his orders are perfectly understood by the whole fleet. That is just the kind of control the electorate would like to exercise over their chosen servants, and it may be that the radiophone will help in this as it has done in the Navy.
Any step in this direction, making closer the contact between important business men or office holders, and those to whom their views are of especial interest, is to be welcomed. There has been developed in the laboratories of the General Electric Co. a device which promises to be an important factor in improving this branch of radio broadcasting, styled the pallophotophone. With this euphonious title the sponsors have decided to christen a new photographic method of recording and reproducing speech or music, which has apparently been developed along somewhat different lines from any other method of which we have heard.
There is apparently no new scientific principle involved in the scheme; it is an ingenious combination of pieces of apparatus which had not been tried before. There can be but few really new discoveries or fundamental inventions with the present rate of progress of science;
AS CLEAR AS THE HUMAN VOICE
This is the claim for the speech reproduced by Charles A. Hoxie's pallophotophone,
the remarkable combination of inventions by which sounds are photographed on a
moving film and changed to corresponding electric currents which may be used, at
any time, to control the output of a broadcasting station
most inventions must be merely an improvement on devices already known or new combinations of these devices. Such is the pallophotophone, for which Mr. Charles A. Hoxie, of the General Electric Co., a well known inventor, seems to be responsible.
This scheme of Hoxie's involves, first, photographing sounds on a moving film by means of a vibrating diaphragm, suitable magnifying levers, and a mirror, and secondly, changing this record on the film by a photo-electric cell to corresponding electric currents which, sent through amplifiers, are able to control the output of the broadcasting station. Both of the actions involved in the pallophotophone have really been developed in university laboratories by so-called "pure" scientists;