Group 12 element people in the 17th century. German chemist Andreas Marggraf is usually given credit for discovering pure metallic zinc in a 1746 experiment by heating a mixture of calamine and charcoal in a closed vessel without copper to obtain a metal. Experiments on frogs by the Italian doctor Luigi Galvani in 1780 with brass paved the way for the discovery of electrical batteries, galvanization and cathodic protection. In 1880, Galvani's friend, Alessandro Volta, invented the Voltaic pile. The biological importance of zinc was not discovered until 1940 when carbonic anhydrase, an enzyme that scrubs carbon dioxide from blood, was shown to
Extracted of "Electric Sheep" called it "an excellent science-fiction thriller that, while reminiscent of a number of other films ... improves on all its predecessors". Jeremy Kirk of First Showing rated it 8.5/10 and described it as "a classic case on how indie science fiction works", focused on character and narrative. "Starburst" rated it 5/10 stars and wrote that the film's execution falls short of its "fascinating, thought-provoking" premise. Extracted Extracted, also known as Extraction in the UK, is an independent 2012 American science fiction thriller directed and written by Nir Paniry. Sasha Roiz stars as a scientist whose consciousness becomes