NOISE PHOTOGRAPHS.

Hauraki Plains Gazette, Volume XXXV, Issue 4673, 12 March 1924, Page 3

NOISE PHOTOGRAPHS.

MAGIC OF TO-DAY. HEARING THROUGH AN ELBOW. Heaving through an elbow and drawing with the voice were among 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, S.W. By means of the otophone a deaf person is enabled to hear normal sounds transmitted not through the diaphiagm of his ears but through th-: bones of his skull, his elbow joint, or the kitucklfes of his hand straight to the bi aim People who were not deaf, but merely curious, were stopping their ears, and by placing a disc on their foreheads listening through the sikull to the conversation of their friends BABY TEST. Drawing with the mouth is accomplished by the aid of the audiometer, which resembles a combination of a gramophone and an electrical sign. When a persop sings, plays an instrument, or shouts into the inverted megaphone the sound is instantane-ou-ly 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. Phis machine was put to a full test by a crying baby, who made most of the. sounds known to science and a few 0/ its own invention.

SEEING DRINKS 3000 MILES AWAY. Professor Low, 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 over here, but he prophesied that before 20 years had passed America would be able to see us drink them over here. Wireless vision was very badly wanted; it was not in many ways very far removed from ordinary wireless.