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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
First African-American woman to earn a PhD in physics (University of Michigan Ann Arbor 1972) on vibrational analysis of secondary chlorides [149] Morgan, Garrett: 1877–1963 Inventor Invented an early version of a gas mask called a smoke hood, and created the first traffic light that included a third "warning" position which is standard today ...
Invented in 1952 by Virginia Apgar. Disposable diapers The first disposable diaper was invented in 1946 by Marion Donovan, a professional-turned-housewife who wanted to ensure her children's cloth diapers remained dry while they slept. [12] Donovan patented her design (called 'Boaters') in 1951.
The earliest American black dolls with realistic African facial features were made in the 1960s. The first Barbie fashion doll from 1959. Fashion dolls are primarily designed to be dressed to reflect fashion trends and are usually modeled after teen girls or adult women.
The timeline of historic inventions is a chronological list of particularly significant technological inventions and their inventors, where known. [ a ] The dates in this article make frequent use of the units mya and kya , which refer to millions and thousands of years ago, respectively.
The first Little People toy, "Looky Fire Truck," was introduced in 1950, and it sold so well, the company introduced the "Super-Jet" and "Racing Rowboat." BUY NOW Getty
[213] [214] The centre of the settlement was the domain of men, and had an area for resolving disputes and making political decisions, while the outer zone was the domain of women, containing domestic complexes. [215]. The second king had their palace in the middle of the hill, and is called "Tshidziwelele" in Venda oral traditions. [190]
The Great Rift Valley of Africa provides critical evidence for the evolution of early hominins.The earliest tools in the world can be found there as well: An unidentified hominin, possibly Australopithecus afarensis or Kenyanthropus platyops, created stone tools dating to 3.3 million years ago at Lomekwi in the Turkana Basin, eastern Africa.