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Related articles about the subject of girls' schools in South Africa may also be included. Subcategories This category has the following 2 subcategories, out of 2 total.
Pretoria High School for Girls (often called PHSG), is a full-government, fee-charging, English-medium high school for girls located in Hatfield, Pretoria in the Gauteng province of South Africa. It is the sister school to Pretoria Boys High School. [1] The high school was founded in 1902 by Edith Aitken.
An optical transistor, also known as an optical switch or a light valve, is a device that switches or amplifies optical signals.Light occurring on an optical transistor's input changes the intensity of light emitted from the transistor's output while output power is supplied by an additional optical source.
The company was founded in 1956 by His first chain store opened in 1978, and was the start of PEP Reef. [6] [7] Formerly known as PEP stores the company changed its name to Pepkor Limited in 1982 and PEP stores became a subsidiary company. [1] In 1998, Pepkor acquired Australian retailer Best & Less. [8]
St. Mary's Diocesan School for Girls is an Anglican private boarding school for girls situated in Hillcrest, Pretoria in the Gauteng province of South Africa, St Mary's DSG was founded in 1879 by the Rt Revd Henry Bousfield, the first Bishop of Pretoria. [1]
A further array-based switch engine uses an array of individual reflective MEMS mirrors to perform the necessary beam steering (Figure 5 [5] (to be uploaded). These arrays are typically a derivative of the Texas Instruments DLP range of spatial light modulators. In this case, the angle of the MEMs mirrors is changed to deflect the beam.
Unlike electronic integration where silicon is the dominant material, system photonic integrated circuits have been fabricated from a variety of material systems, including electro-optic crystals such as lithium niobate, silica on silicon, silicon on insulator, various polymers, and semiconductor materials which are used to make semiconductor lasers such as GaAs and InP.
A photodiode is often combined into a single component with an emitter of light, usually a light-emitting diode (LED), either to detect the presence of a mechanical obstruction to the beam (slotted optical switch) or to couple two digital or analog circuits while maintaining extremely high electrical isolation between them, often for safety ...