英和和英

出典:『Wikipedia』 (2011/03/20 12:21 UTC 版)

英語による解説

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A graduation tower is a structure to remove water from saline solution, used in the production of salt. It consists of a wooden wall-like frame which is stuffed with bundles of brushwood. It increases the concentration of a solution of mineral salts. The salty water runs down the tower, and — through the action of breeze and sun — partly evaporates; at the same time a certain mineral content of the solution is left behind on the sticks of brushwood. The world's biggest and most famous complex of graduation towers is in Ciechocinek, Poland. This magnificent wholly wooden construction was erected in the 19th century by Stanislaw Staszic.The complex consists of 3 graduation towers with a total length of over 2 km. Many tourists visit it for health reasons.