RE: Can we get usable electricity from sound?
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This is such an amazing concept. Even I, who know nothing about piezoelectric transducers, can understand the idea. How elemental and grand. As I read this it reminded me of Edison's invention of the phonograph:
He experimented with a diaphragm which had an embossing point and was held against rapidly-moving paraffin paper. The speaking vibrations made indentations in the paper. Edison later changed the paper to a metal cylinder with tin foil wrapped around it. The machine had two diaphragm-and-needle units, one for recording, and one for playback. When one would speak into a mouthpiece, the sound vibrations would be indented onto the cylinder by the recording needle in a vertical (or hill and dale) groove pattern. (From https://www.loc.gov/collections/edison-company-motion-pictures-and-sound-recordings/articles-and-essays/history-of-edison-sound-recordings/history-of-the-cylinder-phonograph/)
Once it was done, it seemed so simple, and obvious, but someone had to think of it first. The students in Malaysia deserved the Silver Award.
A great article, and accessible to someone like me--a non-scientist. Thank you!
I am familiar with Edison's phonograph. Yes, the concept is quite similar to it, but not that simple. Producing sound from electricity is easier to perform rather than creating electricity from sound. This reminds us that the invention of today is a result of someone who does it first before (but on a different application).
Thank you for dropping by my post. I appreciate you like how the technicalities stated in a casual way.
Thank you for your response. It is the ingenuity and creative thought I admire. Thanks for sharing. I've shared the article with my son, who will readily understand the technicalities.