Lightning
Lightning is a naturally occurring electrostatic discharge during which two electrically charged regions in the atmosphere or ground temporarily equalize themselves, causing the instantaneous release of as much as one gigajoule of energy. This discharge may produce a wide range of electromagnetic radiation, from very hot plasma created by the rapid movement of electrons to brilliant flashes of visible light in the form of black-body radiation. Lightning causes thunder, a sound from the shock wave which develops as gases in the vicinity of the discharge experience a sudden increase in pressure. Lightning occurs commonly during thunderstorms and other types of …
WikipediaPublications
Laws.Africa · 7 November 2022 English
the remote control of industrial operations; lightning arresters; electrolyzers; fire extinguishers; …
Laws.Africa · 9 September 2022 English
ZETDC/INTER/RE-07/2022. Supply and delivery of intergrated lightning arrester and drop-out fuse units forZETDC. Closing …
Laws.Africa · 2 September 2022 English
20012475 Glycine max (L.) Merrill Soya bean Lightning Cedara [598] Cedara [598] 2021-05-14 ZA 20022646 …
Laws.Africa · 11 July 2022 English
opinion of the chief fire officer, the risk of lightning may pose a hazard, he may direct that certain … determine, be protected by the installation of lightning conductors in accordance with SANS 10313; (f) …
Laws.Africa · 24 June 2022 English
ZETDC/INTER/07/2022. Supply and delivery of intergrated lightning arrester and drop-out fuse units. Closing date: …
Laws.Africa · 7 March 2022 English
603/2021 in Class 9 semi-conductors; alarms; lightning rods; surveying apparatus and instruments; square … electric apparatus for commutation; lightning rods; lightning arresters; electrolysers; fire extinguishing …
Laws.Africa · 4 February 2022 English
materials. Lot 12: Trunking steel. Lot 13: Lightning protection. Pretender site visit. Lot 14: Protective …
Laws.Africa · 4 October 2021 English
conducting filaments]; Heat regulating apparatus; Lightning rods; Fire extinguishing apparatus; protective … 268/2021 in Class 9 semi-conductors; alarms; lightning rods; surveying apparatus and instruments; square …
Laws.Africa · 1 October 2021 English
90-21. Supply, installation and commissioning of lightning protection system for Mazowe Earth Station. (Site …
Laws.Africa · 16 September 2021 English
insulators of any material-Other 0.5 128 8535.40.00 Lightning arresters, voltage limiters and surge suppressors …
