摘要
冰在熔解过程中需要吸取热能,根据热力学第一定律,将冰与水混合的过程中系统的总能量守恒。混合法测定冰的熔解热作为大学物理中一个经典实验,在大学物理实验的教学中具有重要的地位。本文从细节出发对传统实验冰的熔解热的测定进行改进,包含对量热器进行改造、改良实验数据的处理等方法,提高了实验结果的精确度,节约了实验器材的成本。最后测得的冰的熔解热的数值误差仅为标准值的0.299%,对今后我校在本实验上的教学有深远的意义。
Ice need to absorb heat in the melting process, according to the first law of thermo- dynamics, the system of ice and water mixed in the process of total energy conservation. The heat of fusion hybrid method for the determination of ice as a classic experiment in college physics plays an important role in the college physics experiment teaching. In this paper, starting from the details of the traditional experiment of ice melting heat were improved, including transformation, calorimeter improved experimental data processing method, improves the accuracy of experimental results, the cost saving experimental equipment. The numerical error of the measured ice melting heat at the end of the only 0. 299% of the standard value, there＇s far-reaching significance for the future of our school in the experimental teaching.
出处
《物理与工程》
2017年第3期67-71,共5页
Physics and Engineering
基金
北京林业大学2016年度教学改革研究项目(项目编号:BJFU2016JG044)
关键词
熔解热
实验
改进
自制
创新
the heat of fusion
experiment
improvement
self-made
innovation
