Sound in Light.

Manawatu Herald, 13 March 1897, Page 3

Sound in Light.

Oat of the marvels of modern loienee observes L% Science Papu hire, ia the conversion of a beam of light into sound. The light ray is thrown through a lens on a glass teasel containing lamp black, coloared silk, worsted or other subitance. A disk having slits or openings oat in it is made to revolve swiftly in the beam of light so as to cat it up, making alternate flashes of light and shadow. On putting the ear to the glass vessel strange Bounds are heard so long as the flashing beam is falling upon it. Another phase of this remarkable discovery U still more interesting. A beam of sunlight is passed through a prism, the disk is turned, and the coloured light of the solar spectrum is made to break through it. If the ear be placed to the vessel containing the silk, wool, or other material as the coloured lights fall upon it sounds will be given by different parts of the spectrum and there will be silence in some other parts. If the vessel contains red worsted and the green tight flashes upon it loud sounds will be heard. Only feeble sounds will be beard if the red and blue rays falls upon it, and other colours make no sound at all. Green silk gtres sound best in red light. It is py no means improbable that the discovery foreshadows a new law of harmonies, and Remington's experiments in tone and colour may possibly, by this new application of light and. Eound result in some practical theory which will give us an entirely Daw scheme of music. The thing is bat in its infancy, but the mere fact thi' such a discovery has been made fliunot bntfweaflt important results.