辨析水平面与切平面  

Differentiation Between Horizontal Plane and Tangent Plane

作　　者：刘长欣 陈涛 LIU Changxin;CHEN Tao(Big Data Research Center for Finance and Taxation,Henan Finance University,Zhengzhou 450046,China;Sheqi No.1 Senior High School,Nanyang 473300,China)

机构地区：[1]河南财政金融学院财税大数据研究中心,河南郑州450046 [2]社旗县第一高级中学,河南南阳473300

出　　处：《河南教育学院学报（自然科学版）》2023年第1期59-61,共3页Journal of Henan Institute of Education(Natural Science Edition)

基　　金：河南省教育科学规划项目(2022YB1327)。

摘　　要：文献[1]的作者认为:若把地球看作均匀理想的球体,则无法解释重力方向与引力方向的不一致;好在地球是一个赤道略鼓的椭球体,成功地解决了竖直向下不指向地心的问题。但是,此解释存在瑕疵,通过讨论地面某处切平面与水平面的区别,给出更合理的解释。The author of reference[1]explained that it can not explain the unconsistence of directions of gravity and attractive forces were not consistent if the earth is taken as a uniform ideal sphere.Fortunately,the earth is an ellipsoid with a slight bulge in the equator,which successfully solves the problem of pointing vertically downward instead of toward the center of the earth.But this explanation has its defects,a more reasonable explanation is provided by discussing the difference between the tangent plane and the horizontal plane on the ground.

关 键 词：重力 方向 竖直向下 切平面 水平面 地球自转 

分 类 号：G642.0[文化科学—高等教育学] O314[文化科学—教育学]