杨氏模量实验的设计

The design of Young's modulus experiment

测金属丝杨氏模量的实验,都是围绕如何测准金属丝在外力作用下的伸长量而设计的,传统的方法是利用光杠杆去测量。由于读数显微镜的分度值为,并可读到毫米的第三位,因此可利用读数显微镜去测量金属丝在外力作用下的伸长量,这样在操作上较传统的方法更为方便,同时也提高了测量结果的可靠程度。

The experiment of measuring Young＇s modulus of the wire silk, centres on how to design for measuring elongation of wire silk under outside force by the square, The traditional method is to make use of the light lever to measure, But divisional value of reading micrescope is only 0.01mm and can read to the third places of decimals, operating reading microscope to measure the elongation of the wire silk under outside force is more convenient than by traditional method, and also raise the degree of reliability of the result.