1. Electrical conductivity. Electric current is the flow of electrons in a wire. In metals, the outer electrons of the atoms belong to a cloud of delocalised electrons. They are no longer firmly held by a specific atom, but instead they can move freely through the lattice of positive metal ions. Normally they move randomly.
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Showtimeâs Homeland wonât return this fall, but the acclaimed espionage thriller now has a return date. Homeland will return for a sixth season on Sunday, Jan. 15. Finance drama Billions also now has a second season return date: Sunday, Feb. 19. In addition, Showtime has renewed Ray Donovan for a fifth season, with production set to begin next year. Homeland typically airs in the fall, but was pushed to 2017 for its next edition.