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@jacobmakesciencefun
00:37
Science Teacher makes weird discovery...hidden sound signal in light from a data projector
Jacob the "Mad Scientist" from Australia is a keen Physics Teacher. One day he was demonstrating to the class how light can be modulated by a sound signal, transmitted using an LED torch, and turned back into sound using a solar cell and an amplifier.
By serendipity, Jacob makes a chance discovery and detects in the light from an Epson data projector a mysterious embedded sound signal. It is a repeating signal and sounds almost alien.
There are NO sound edits in this footage. The only edit is the image of the alien which appears for a few seconds.
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