What [slider2732] did was to buy an electronic candle that used one of the LEDs actually shaped like a flame, and to drill a hole near the ‘flame’. He them embedded a microphone behind the hole.

Practically every account has involved an external source of flame, Byard added. The most common culprits are lit cigarettes, lamps, or candles. Related stories Science says bodies can act like a ...

1. Ask the adult you are working with to light the candle. 2. Watch the candle flame start out small and get bigger. Notice how some of the wax near the wick melts. 3. As the flame burns, the wax from ...

Are vapors and chemicals produced by burning candles bad for your health? Are scented or paraffin candles more toxic? Experts discuss burning candles indoors.

The tuning process, though, sounds like it was pure torture. It took a lot of tweaking — and a lot of MOSFETs — to get the candle to produce a stable flame. But once it did, the results were ...