The 1979 oil crisis, sometimes referred to as the second oil crisis (in reference to the 1973 oil crisis), refers to the drop in oil production in the aftermath of the Iranian Revolution that led to an energy crisis in 1979. Although the global oil supply only decreased by approximately four percent, the oil markets'…

Building insulation materials are the building materials that form the thermal envelope of a building or otherwise reduce heat transfer. Insulation may be categorized by its composition (natural or synthetic materials), form (batts, blankets, loose-fill, spray foam, and panels), structural contribution (insulating…

Gautrain is an 80-kilometre (50-mile) higher-speed express commuter rail system in Gauteng, South Africa, which links Johannesburg, Pretoria, Kempton Park and O. R. Tambo International Airport. It takes 15 minutes to travel from Sandton to O. R. Tambo International Airport on the Gautrain and 35 minutes from Pretoria…

e-toll (in South Africa) consisted of the electronic toll collection (ETC) processes employed by South Africa's roads agency SANRAL on selected toll roads or toll lanes in the Gauteng province, subject to the Sanral Act of 1998. SANRAL derives its income both from toll income and the national fiscus, while initial…

Solar power has been growing rapidly in the U.S. state of California because of high insolation, community support, declining solar costs, and a renewable portfolio standard which requires that 60% of California's electricity come from renewable resources by 2030, with 100% by 2045. Much of this is expected to come…

A liquid-crystal display (LCD) is a flat-panel display or other electronically modulated optical device that uses the light-modulating properties of liquid crystals combined with polarizers to display information. Liquid crystals do not emit light directly but instead use a backlight or reflector to produce images in…

Johannesburg ( joh-HAN-iss-burg, US also -⁠HAHN-, Afrikaans: [jʊəˈɦanəsbœrχ] ; Xhosa: eGoli [ɛˈɡɔːli]; Zulu: iGoli [îˈɡóːli]), colloquially known as Jozi, Joburg, or "the City of Gold", is the capital city of the province of Gauteng and the largest city in South Africa. In 2022 (the year of the most recent census),…

World food prices increased dramatically in 2007 and the first and second quarter of 2008, creating a global crisis and causing political and economic instability and social unrest in both poor and developed nations. Although the media spotlight focused on the riots that ensued in the face of high prices, the ongoing…

Transform your home with stylish decor from Makro. Shop for accessories, furniture, and more to elevate your space. Quality products at great prices!

A photovoltaic system, also called a PV system or solar power system, is an electric power system designed to supply usable solar power by means of photovoltaics. It consists of an arrangement of several components, including solar panels to absorb and convert sunlight into electricity, a solar inverter to convert the…