摘要
使用硅压力敏传感器自制了物体密度测量仪,分别对304不锈钢、石蜡和医药酒精的密度进行了测量,取得了较好的结果.力敏传感器的数显特点使学生能方便快捷地进行操作,减少了天平测量的繁琐过程,剔除了由于砝码长期使用磨损和污染带来的误差.硅压力敏传感器的引进改变了传统实验的思路,把一个简单的密度测量实验变成了一个力、电的综合实验,使传统的实验更具有新鲜感和吸引力,为物理实验的教学改革提供了一种新思路.
The density measuring apparatus has been made by myself,based on Si-resistance-strain force sensor.Using this apparatus we have measured the densities of the 304 stainless steel,paraffin and medical alcohol.Some good results were obtained and the experimental errors were less.The function of digital display made the students observe the experimental phenomena intuitively and operate very fast.The complicated process of balance measurement was reduced.It had been removed the error of scales for abrasion and pollution.Introduction of the Si-resistance-strain force sensor has changed the idea of traditional experiment and made the traditional experiment into a comprehensive experiment composed of force and electric.Traditional experiments have become more attractive and exciting.And this work provided a new thought for the educational reform of physical experiment.
出处
《物理与工程》
2010年第6期25-28,共4页
Physics and Engineering
关键词
密度
硅压力敏传感器
density
Si-resistance-strain force sensor
