11. The common fluorescent lamp is a low-pressure mercury arc lamp. 12. The first VL80s were characterised by their mercury arc rectifiers. 13. In 1977 one mercury arc valve group was replaced by a thyristor valve group. 14. The last mercury arc system was shut down in 2012. 15. Most modern UV sources are based on a mercury arc sealed in a glass tube. 16. For several years, he worked on the pioneer development of the iron mercury arc rectifier. 17. Consequently, converters built with mercury arc valves are known as line-commutated converters ( LCC ). 18. The mercury arc valve current-voltage characteristics are highly dependent on the temperature of the liquid mercury. 19. Several mercury arc rectifiers were salvaged from the Konti-Skan link between Denmark and Sweden for this restoration. 20. The mercury arc became the principal light source, first with photographic detection and then with spectrophotometric detection.
