Take a candle and matches. Put it on the Desk light. With the words: "I can look to extinguish a candle!" stand at a considerable distance, for a moment, close your eyes, if transmit energy. After a few moments, the candle will go out.
How did you do it? Candle, question, real, paraffin. Goes out as she silicate glue, a few drops of which in advance put in a tiny hole on its surface, at the bottom centimeter of the wick. The length of the wick gives the possibility to move away from the candles and then give the appropriate command. To extend the wick to the desired size, using knife cut from the top of the candle excess paraffin.