author - "Michael Faraday"

out it. It is not the best looking thing, but the bestacting thing, which is the most advantageous to us. This good-lookingcandle is a bad burning one. There will be a guttering round about itbecause of the irregularity of the stream of air and the badness of thecup which is formed thereby. You may see some pretty examples (and I trustyou will notice these instances) of the action of the ascending currentwhen you have A little gutter run down the side of a candle, making itthicker there than it