An LED lights up when i touch it. One leg is attached to a piece of metal, other is the one i touch. Polarity does not matter. Amount of metal maters - table frame makes it full bright, half-meter steel ruler makes it dim, a piece of wire makes it just visible. Touching that piece of metal makes the light go off. This only happens when there are power main wires nearby, which suggest an induction effect. I want to reproduce that light without touching the LED. The question is - what am i in the circuit? I tried attaching the second leg to several coils, with not a slightest result. I also tried a 680pF capacitor, also without a result. Peculiarly, the LED is lit if i touch the side of the capacitor, which is ceramic. Combing the hair to make static charges does not affect the brightness. And that exhausts my familiarity with electricity. What is going on here? How can i get the LED to light up like that without touching it?