OCR Text |
Show Noise of City May Siaht Its Streets London. The prospect of London being lit by the noise of its own traffic traf-fic is suggested ns the result of a new application of Piezo-electricity, a process pro-cess by which sound is converted into power. Plezo-electricity is the property prop-erty possessed by certain crystals whereby they generate electricity when subjected to vibration. Two Cambridge Cam-bridge undergraduates have harnessed this force to the needs of commerce, com-merce, and the invention is being shown at the wireless exhibition here. |