基于智能手机的地球半径测量居家实验HOME PHYSICS EXPERIMENT OF MEASURING EARTH RADIUS BASED ON SMARTPHONE
杨子源,翟立朋,毛胜春,李友群
摘要(Abstract):
本文是在新冠肺炎疫情的大背景下,基于智能手机设计了日落时差法、太阳仰角差值法和GPS定位法三种方法进行地球半径的测量,本文所提供的实验方法不需要专业的物理实验测量工具并可以居家完成,其中日落时差法和太阳仰角法测量得到的地球半径分别为6246km和6239km,测量的相对误差分别为2.0%和2.1%;GPS定位法中设计了同经度取点、同纬度取点和任意取点三种取点方法,测量得到的地球半径分别为6432km、6400km、6343km,测量的相对误差可以达到1.0%、0.5%和0.4%。本文所有方法的误差精度都可以满足基础物理实验课程设计的要求,GPS定位法的测量精度要明显优于日落时差法和太阳仰角法。同时本文还分析了各方法测量误差最主要的影响因素。
关键词(KeyWords): 智能手机;地球半径;居家实验
基金项目(Foundation): 陕西省重点研发计划(2020GY-274);; 2020年西安交通大学本科教学改革研究(拔尖专项)项目(20BJ02Y)
作者(Author): 杨子源,翟立朋,毛胜春,李友群
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