/technologies/power-management/b/blog/posts/teacher-transmits-sound-using-a-laser-and-solar-panel-connected-to-a-speakerChemistry teacher Phillip Cook noticed that when he fired a laser at a solar panel, it emitted sound. Cook found that he could wirelessly transmit sound, with the solar panel acting as a receiver. (Image credit Phillip Cook via YouTube) Chemistry te.en-USTelligent Community 12https://community.element14.com/technologies/power-management/b/blog/posts/teacher-transmits-sound-using-a-laser-and-solar-panel-connected-to-a-speakerThu, 30 Oct 2025 18:53:33 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:40fbcd32-5069-4a7f-9cf5-074a282237e3DAB0<p>Interesting experiment.</p> <p>If you want a coherent beam to go further, you have to be able to generate a TM 1,1 mode where you send out a donut beam. They hold together over longer distances.</p><img src="https://community.element14.com/aggbug?PostID=29309&AppID=4&AppType=Weblog&ContentType=0" width="1" height="1">https://community.element14.com/technologies/power-management/b/blog/posts/teacher-transmits-sound-using-a-laser-and-solar-panel-connected-to-a-speakerWed, 29 Oct 2025 16:24:02 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:40fbcd32-5069-4a7f-9cf5-074a282237e3dougw0<p>Pretty cool. I think I might try this.</p><img src="https://community.element14.com/aggbug?PostID=29309&AppID=4&AppType=Weblog&ContentType=0" width="1" height="1">