Aluminium is a good electrical conductor and is often used in electrical transmission lines. It is cheaper than copper and weight for weight is almost twice as good a conductor. When evaporated in a vacuum, aluminium forms a highly reflective coating for both light and heat.
Nelson Mandela had a large family and had 13 brothers and sisters.  Of all of his siblings, he had one full brother and one half  brother.
12 reads. Nelson Mandela was born on July 18, 1918, in the village of Mvezo, located in Umtata district of Transkei, South Africa. Nelsonâs father, Gadla Henry Mphakanyiswa, was a Mvezo chief, and while Mandela descended from the local Thembu tribeâs royal family, he was not part of the line that put him in succession for the throne.