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Roshandan A roshandan (Hindustani: रोशनदान or روشندان) is a feature of many dwelling structures in North India and Pakistan that is a combined skylight and ventilating window. ''Roshandans'' are usually located high on a room's walls, and often on top of windows. They are essentially smaller windows that swivel open when needed. Smaller ''roshandans'' are sometimes called ''roshandanis''. The high location of ''roshandans'' means that, for part of the summer (except for the months when the Loo winds blow in the region), they can be kept open to allow heated air just below the ceiling to escape while retaining relatively cooler air inside.〔 In wintertime, they are kept shut and used purely as skylights. ==Etymology== The term ''roshandan'' literally means "''that which has/admits light''" in several North Indian and Pakistani languages. Though the word ''roshandan'' is often translated to ''ventilator'' in English in the Indian subcontinent, this is incorrect literally speaking.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Roshandan」の詳細全文を読む
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