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 Ambiguity A Certain Ambiguity "A Certain Ambiguity: A Mathematical Novel" is a mathematical fiction by Indian authors Gaurav Suri and Hartosh Singh Bal. It is a story about finding certainty in mathematics and philosophy. In a certain ambiguity we meet Ravi Kapoor, who travels to America to further his education, and is fascinated both by mathematics and philosophy. There he finds about his grandfather being jailed in the year 1919. The book talks about Ravi's experience in the college and his quest to uncover the reason for his grandfather's arrest. The book is the winner of the 2007 Award for Best