Lightning Detectors

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T-I-N:
Živijo,

aha, nevem če govoriva ravno v isti stvari. Eno je zaznavanje že nastalih razelektritev, eno pa merjenje električnega polja oziroma "napoved" razelektritve. Kratk uvod v dolg pdf po katerem izdelujem napravco:

 A field-mill is used to measure an electrical earth field (V/m). A field-mill is based on static electric influence
on a conductive plate. If an electrode in an E-field is covered by a rotating wing then the charge is flowing
from the electrode to ground. If the electrode is not covered influence charges are flowing back to the electrode.
The current is proportional to E-field.
At stable weather E-field is about 100 – 150 V/m (direction is from atmosphere to earth). Earth is negative and
atmosphere is positive. During a lightning there are a lot of charge separations in the cloud. This charging is
very strong and under the lightning cloud the E-field can be up to 30 000 V/m. Also without lightning strokes
the E-field can be very high. This could be used as lightning warning. Depending on cloud type (negative or
positive cloud base) E-field is positive or negative.

Lp,
Martin.

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