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.
Mandela sadly passed away on 5 December, 2013, and will always be remembered as a role model and inspiration. After 27 years in prison he became the first democratically elected president of South Africa, a country where children of all skin colours gained equal rights for the first time. Nelson continued to help South Africaâs children and demands respect for their rights. He started his own childrenâs foundation, the Nelson Mandela Childrenâs Fund (NMCF), which helps children whose parents have died of AIDS, street children, disabled children and poor children.