You know how you can use headphones as a microphone and an electric motor as a dynamo if you reverse the polarity in the connectors...
If you shine intense light at a lightbulb, does it generate electricity? Even just a tiny amount?
ninalanyon · 61-69, T
Possibly but the mechanism would be quite different. The headphones and electric motors are both magnetic devices. The sound waves move the conductors in a magnetic field which generates a current in the wire.
But in the case of the light bulb, old fashioned incandescent kind, the impinging light is not moving the wire in a magnetic field.
However, in the case of LED lights photons hitting the LED junction can generate a voltage. But this is a quantum mechanical effect rather than an electromagnetic one.
But in the case of the light bulb, old fashioned incandescent kind, the impinging light is not moving the wire in a magnetic field.
However, in the case of LED lights photons hitting the LED junction can generate a voltage. But this is a quantum mechanical effect rather than an electromagnetic one.