wonders of candle:for generation of electric current

we genrally used candles as for lightining but there is a some magic behaviour inside it.with the help of burning candle light we can lighting the led or normal small sized bulb.for this u have going through through a process:first of all u have to put two nails inside two candle partially and then you rub the nails with some magnetic materil for some hour then after join two wires with to nails with an LED.after this burned up the candle with mathis stick.an u see blinking of led is going on.so basically conclusion is that it can generate electric current or voltage upto 2 to 3 volts that will sufficient for burning of led.