Mysterious projector phenomenon sounds alien – Make Science Fun

506 views · Published 22 August 2015 · 6:32 · Indexed 21 October 2026

Channel: Make Science Fun · 2015 · Education

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Did you know that some data projectors may be carrying a subliminal message in their light!
The light from the Epson projector in my classroom is continually being modulated by a repeating musical tune. 
I discovered it one day when I was using an LED torch to send a beam of light modulated by some music to a solar panel. 
The electricity produced by the solar panel is then input into an amplifier and the music can be heard clearly!
While I was doing this..I inadvertently picked up the light from the projector using my solar panel..and it started playing a different tune! 
It was so weird and freaky, that for the briefest of moments.. I thought it was an alien or something trying to talk to me!
I’ve tested quite a few projectors and so far the only one I have found doing it is the one in my room! Mind Blown!

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