NOISE PHOTOGRAPHS.

Shannon News, 7 March 1924, Page 2

NOISE PHOTOGRAPHS.

HEARING THROUGH AN ELBOW.

Hearing: through an elbow and drawing with the voice were among v the scientific marvels demonstrated at the 14th annual exhibition-of electrical, optical, and other physical apparatus held at the Imperial College of Science, South Kensington, London. By means of the otophone, a deaf person is-enabled to, hear norma] sounds transmitted not through the diaphragm of his ears, but through the boneis. of his skull, his elbow or the knuckles of his hand straight to the brain. People who. were not deaf but merely curious were stopping their cars, and by placing a disc on thoir foreheads listening through the skull to the conversation of their friencls. When a telephone receiver was used it was possible to hear atmospheric pressure which resembled the squeak of a mouse. BABY TEST. Drawing with the mouth is accomplished with the aid of the audiometer, When a person sings, plays an instrument, or shouts into the inverted megaphone, the sound is instantaneously photographed on a revolving disc. A gentle intoning of the vowels gives a regular succession of flashes, but jazzy music played on a concertina looked like a storm at sea. This machine was put to a full test by a crying baby, who made most of the saunds known to science and a few of its own invention.. SEEING DRINKS AT 3000 MILES. Professor Low, while lecturing at King's College, Strand, stated that the British Broadcasting Company had said that within 20 days America would be able to listen to cocktails being shaken, but ho,prophesied, that before 20 years had passed • America would be able to, see Englishmen drink them. Wireless vision was very badly wanted; it was not, in many ways, far removed from ordinary wireless.