2002 Winners Category 1: Science in Action

Winner

Enlarged view Photographer: Betsy Kee Title: Early morning spectral highlights on grasses Description: These highlights form when dewdrops on grasses are backlit with a low light.

Highly commended entries

Enlarged view Photographer: Rodney Trevor Jones Title: DC Plasma Arc Description: A turbulent electric arc at about 20 000 degrees Celsius, impinging on a graphite block, in air. These arcs are used in furnaces to melt ores and produce metal. Enlarged view Photographer: Bronwyn Fleming Title: Absolutely Amazing Albedo Description: The more the mill is illuminated, the faster it turns. The black squares absorb light, while the white ones reflect light and heat the air they come into contact with. The heated air expands and turns the mill by pushing the white sides forward. Enlarged view Photographer: Colleen McDuling Title: Windmills of my mind Description: Star trails of the Southern Cross area around the head of a windmill. Enlarged view Photographer: Kanti Daya Bhoola Title: Sequential images of endothelial cells initiating an angiogenic process to form capillary tubes Description: Angiogenesis is the sprouting of new capillary blood vessels from pre-existing ones. Enlarged view Photographer: B. Alan Walton Title: Chironia Decumbens Description: A marsh-loving annual plant, once abundant and now restricted to a small patch of land owned by Metrorail in Muizenberg.

Enlarged view Photographer: Bronwyn Fleming Title: The tiger and the lily Description: Two equally beautiful objects in nature in their daily battle for survival. Enlarged view Photographer: Ronald Natale Heath Title: Light of life Description: A bracket fungus from the genus canoderma, with basidiospores flowing from the pores of the fungus. Enlarged view Photographer: Reginald John Brandt Title: Study 7: Iscor Vanderbijlpark works Enlarged view Photographer: Johan Booyens Title: Crystallography Description: Measuring inter facial angles of a Rhodochrosite crystal with a goniometer.