Boltek EFM-100 - Figure 26: Thundercloud Directly Overhead; Figure 27: Electric Field Polarity Reversal

C H A P T E R 4 - O P E R A T I O N
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Figure 26: Thundercloud Directly Overhead
Figure 27: Electric Field Polarity Reversal
With the thundercloud directly overhead the polarity of the field has reversed to a negative electric
field.