Artesian aquifer its recharge zone is at a higher elevation than the head of the well. Artesian wells were named after the former province of Artois in France, where many artesian wells were drilled by Carthusian monks from 1126. Artesian aquifer An aquifer is a geologic layer of porous and permeable material such as sand and gravel, limestone, or sandstone, through which water flows and is stored. An artesian aquifer is a confined aquifer containing groundwater under positive pressure. An artesian aquifer is trapped water, surrounded by layers of impermeable rocks or clay, which applies positive pressure to the water contained within
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