To demonstrate the presence of both positive and negative ions in a flame

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To demonstrate the presence of both positive and negative ions in a flame

Before proceeding further with our discussion of point action we must draw the reader’s attention to an effect which is observed when the wire from a conductor of an electric machine is placed very close to a candle flame (Fig. 32.18). On starting up the machine the candle flame is drawn out in both directions. Negative ions in the flame are attracted towards the wire point while positive ions are repelled from it. Note carefully the difference between this experiment and the previous one with a candle flame and a highly charged wire. In the former instance we placed the wire

To demonstrate the presence of both positive and negative ions in a flame

To demonstrate the presence of both positive and negative ions in a flame

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To demonstrate the presence of both positive and negative ions in a flame