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Transmitting Sound using Sunlight - The Photophone

How to make a photophone to transmit sound using sunlight. This invention by Alexander Graham Bell works by reflecting sunlight off a mirror, which is attached to a speaker, to a solar cell and from there to an amplifier. Support RimstarOrg on Patreon https://www.patreon.com/user?u=680159 Subscribe for new videos every week http://www.youtube.com/user/rimstaror... Go to the main channel page here    / rimstarorg   For a diagram of how it works, see my webpage here: http://rimstar.org/science_electronic... See also: How to Make Crystal Radio Amplifier for Speaker    • How to Make Crystal Radio Amplifier f...   Pyramid Hologram - How to Make/How it Works with Princess Leia Hologram    • Pyramid Hologram - How to Make/How it...   How a Prism Works to Make Rainbow Colors    • Pyramid Hologram - How to Make/How it...   The inspiration for this was a comment by Michael Meadows under my video Hand-Cranked Laser - TEA Laser Powered by Wimshurst Machine    • Hand-Cranked Laser - TEA Laser Powere...  . Thanks Michael! Follow behind-the-scenes on: Twitter https://twitter.com/#!/RimStarz Google+ https://plus.google.com/1163951251362... Facebook   / rimstarorg   http://rimstar.org Music used for endboard Essence - music by audionautix.com