สำนักงานราชบัณฑิตยสภา

ลม : กายภาพของบรรยากาศบนพื้ นโลกที่ น่ารู้ 346 The Journal of the Royal Society of Thailand Vol. 41 No. 2 April-June 2016 Abstract: w ind: physical a tmospheric element on Earth that w e should k now Manas Suwan Associate Fellow of the Academy of Moral and Political Sciences, The Royal Society of Thailand Scientists have estimated that the Earth had originated approximately 4,600 million years ago. That’s long enough to make one believe that all things on this planet earth are in the static stage in which nothing have been changed anymore. In fact, nothing on this planet is static, but has been dynamic at all time. Only we could not notice the changes with our personal senses. Not only that we could not recognize changes on this planet earth, in many cases we could not even understand how such changes occurred, and what were the causal factors of those changes. This article is an attempt to provide knowledge and understanding of what have changed and how. The physical change of “wind” has been chosen as the case. In doing so is just to verify that we still remember and understand what we had learned in schools long time ago. Keywords: wind, types and directions of wind, typhoon, hurricane, tornado