2 ms·

How can this be attributed to light instead of other EM waves floating around

• _spduchamp 2y ago
  Try it. It is most definitely the fluctuations in the light. Yeah, there is likely some EM interference, but the rapid fluctuations of artificial light are the source. LEDs, CFLs, even incandecents, all have vibrations that are audible when you pull audio out of the solar cell. Sunlight, not much. No audible vibrations at all. IR remotes are fun. For the last show I played, I put a couple layers of garbage bag over the solar cells to make an IR pass filter to block the stage lights from interfering. Really, give it a try.
• _Microft 2y ago
  Cover it and see if the signal goes away. Then take it to a dark room and shine light on it. If it goes from sound to silence in the first case and from silence to sound in the latter, you can be reasonably sure that light has an effect. If you want to rule out other radiation, you can try shielding the contraption.
  • klysm 2y ago
    If it’s an artificial light source not really
    • _Microft 2y ago
      If that concerns you, then you might want to conduct the experiment with a „non-artificial“ light source. Use a candle that you wave your hand around to modulate the signal if you like. If you suspect that it‘s not visible light but infrared that affects the effect, then selectively shield visible light with a (black) garbage bag and try again.