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.
Nelson Mandela was born on July 1918 in South Africa. At the age of 21, he began to study on the University and became a lawyer in 1952.In those days in South Africa, there was a kind of segregation between Whites and non-whites.Apartheid was a kind of segregation and it was a way of live.elson Mandela was born on July 1918 in South Africa. At the age of 21, he began to study on the University and became a lawyer in 1952.