My torch is a rechargeable wind-up one, with a transparent LED light. I sometimes end up winding it a little strongly when it's on, and if enough strength is applied the LED begins emitting a bluer-shade of light. Stopping when I stop winding.
I'm guessing it has something to do with more energy being emitted as I provide more energy by winding it up. But can someone clarify this for me?
I'm guessing it has something to do with more energy being emitted as I provide more energy by winding it up. But can someone clarify this for me?