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 A Certain Slant of Light "A Certain Slant of Light" is a song by Canadian rock band The Tea Party. It was released as a single in Australia, where it peaked at #60 on the ARIA singles chart in May 1994, and as a promotional single in Canada. The music video was shot in the Sydney suburbs of Kurnell and Kings Cross, was directed by Floria Sigismondi, and features some of The Tea Party's Australian tour management personnel. "A Certain Slant of Light" is a standard three-piece rock composition with lyrics referencing drug addiction. The music video for this single