Search results
Results From The WOW.Com Content Network
In southern Africa one finds ancient and widespread traditions of building in stone. Two broad categories of these traditions have been noted: 1. Zimbabwean style 2. Transvaal Free State style. North of the Zambezi one finds very few stone ruins. [200] Great Zimbabwe, Khami, and Thulamela [201] uses the Zimbabwean style.
1950, Q20 lubricant was invented by Mr. Robertson in Pinetown. [2] Q20 is an all purpose lubricating spray that is owned by the Triton-Leo Group (Pty) Ltd. [3] The name derives from "it has 20 answers to 20 questions". 1957, Flame ionization detector by Harley and Pretorius at the University of Pretoria in Pretoria, South Africa
Category: African inventions. ... This category has the following 7 subcategories, out of 7 total. A. Arab inventions (10 C, 80 P) C. Cameroonian inventions (2 P) E.
It is alleged that South Africa had been collaborating with Israel to develop nuclear weapons and that it possibly detonated one of its weapons over the Indian Ocean in a nuclear weapons test. South Africa dismantled its nuclear weapons programme in 1989, the first nation in the world to do so, and became a signatory of the Nuclear Non ...
Contains products and technology that was invented (at least the modern variation) in South Africa . Subcategories.
This category has the following 86 subcategories, out of 86 total. ... South African inventions (1 C, 19 P) South Korean inventions (2 C, 27 P) Soviet inventions (11 ...
Metalworking in West Africa has been dated as early as 2,500 BC at Egaro west of the Termit in Niger, and iron working was practiced there by 1,500 BC. [69] Iron smelting has been dated to 2,000 BC in southeast Nigeria. [70] Central Africa provides possible evidence of iron working as early as the 3rd millennium BC. [71]
The tines were originally made of bamboo but over the years metal keys have been developed. These types of instrument appear to have been invented twice in Africa: a wood or bamboo-tined instrument appeared on the west coast of Africa about 3,000 years ago, and metal-tined lamellophones appeared in the Zambezi River valley around 1,300 years ...