Medieval technology that its potential was fully achieved. Artesian well (1126) A thin rod with a hard iron cutting edge is placed in the bore hole and repeatedly struck with a hammer, underground water pressure forces the water up the hole without pumping. Artesian wells are named after the town of Artois in France, where the first one was drilled by Carthusian monks in 1126. Central heating through underfloor channels (9th century) In the early medieval Alpine upland, a simpler central heating system where heat travelled through underfloor channels from the furnace room replaced the Roman hypocaust at some places. In Reichenau
A Certain Magical Index released on DVD on December 11, 2012. The first season aired in North America on the Funimation Channel on January 21, 2013. A second season, titled "A Certain Magical Index II", aired in Japan between October 8, 2010 and April 1, 2011, and was also streamed on Nico Nico Douga. The limited edition of the first BD/DVD volume of "Index II", released on January 26, 2011, contained a "A Certain Scientific Railgun" mini-novel. The first season of the English dub was released in 2012 while season 2 was released in 2014. An animated film titled was released to Japanese theaters