With qualities such as strength, ductility and resistance to temperature changes, the precious metals silver is very important to society. While more than half of all silver produced globally goes to the electrical and electronics industries, the jewellery industry is also an important end-user. Silver is also the metal that conducts heat and electricity best, and is used for such things as electrical contacts, high-capacity batteries and electronic circuit boards in mobile telephones and computers. The metal is also used in solar cells, aircraft, satellites and for plating other materials. In the past, silver was used in photographs, but as digital photography is used more and more this application for silver has decreased significantly.