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Find here definitions of specific technical and scientific terms and acronyms.

All | A B C D E F H I K L M N O P Q R S T U V W
There are currently 5 results in this directory beginning with the letter R.
Rayonnement électromagnétique
Transport d’énergie sous forme d’ondes générées par les décharges, induisant des surtensions dans les tronçons de lignes électriques / communication à proximité.
Resistance
Resistance (R) of an object is defined as the ratio of voltage across it (V) to current through it (I), (R = U/I, Ohm’s Law).
Return stroke
Electrical discharges flowing into the ionized lightning channel.
Risk
Value of probable average annual loss (humans and goods) due to lightning, relative to the total value (humans and goods) of the object to be protected (NF C 17 102 : 2011).
Rolling Sphere
Calculation method to assess the impact point of the lightning discharge, being the points in contact with the fictitious sphere surrounding the lower extremity of downward leader.
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Lightning Standards