One day there will be no more need for flames. [slider2732] has put yet another nail in the coffin of this most ancient of all technology by making a candle that uses a flicker LED that you blow out.

[cpldcpu] hooked a photodiode to his oscilloscope, pointed it at a candle flame, and recorded the result. The first interesting observation was the candle slowly changed brightness, whether it was ...

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 ...