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 Slant of Light (novel) A Certain Slant of Light (novel) A Certain Slant of Light is a 2005 young adult horror novel by author Laura Whitcomb. The book was first published on September 21, 2005 by Houghton Mifflin Harcourt's Graphia imprint. Film rights for "A Certain Slant of Light" have been optioned by Summit Entertainment. The book follows Helen, the ghost of a 27-year-old woman that has been dead for 130 years. The beginning of the story follows her through her life as a ghost, playing the role of invisible muse to a handful of artistically inclined people, lest she be cast back into