by Henk Rotman, Philips Lighting 

This article explores ceramic metal halide, a conventional technology still evolving despite the LED revolution, and discusses its specifics, history, most recent developments, and future outlook...(more) (vote)

by Ossie Carstens, Deutz Dieselpower 

This article clarifies the origins of diesel particulate matter (DPM) in exhaust emissions and uses those insights to derive principles to manage these levels...(more) (vote) 

by Thomas Bond, ACDC Dynamics 

Lighting design for optimal light levels factors in location: the required illumination levels, working plane, lamp type, lumen output, mounting height and the required levels of uniformity...(more) (vote)

by Paul Louw, ABB 

The development and applications of low voltage electrical circuit breakers, from the post-World War II days to the incorporation of the de-ionisation chamber in circuit breaker design in the 1940s, and the development and applications of the air circuit breaker...(more) (vote) 

by Connie Jonker, IESSA technical liaison 

Performance and energy efficiency improvements in lamps and lighting, as well as an influx of new products in recent years have replaced the familiar, standard performance parameters, but SANS 10114-1 must still be complied with...(more) (vote) 

by Grant Sutherland, Xpert Welding 

Dimensional distortion in 160 mm thick cast-iron slag pots remained a major concern for steel furnaces with no successful solution in sight until a specialised welding company saved its client millions through a unique restructuring process... (more) (vote)

by Stirling Marais, Cosine Developments 

With the global emergence of building automation, the powerful supervisory facilities and control of a DALI-based emergency lighting system in building designs and renovations are now too obvious to ignore...(more) (vote)