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国家高新技术企业通过ISO9001质量体系认证DH0505热膨胀实验仪本实验仪利用迈克尔逊干涉法测量金属的线膨胀系数,对测试样进行加热,金属试样的热膨胀带动平面镜移动,迈克尔逊干涉光路光程差变化导致干涉条纹变化,从而测试出试样的线膨胀系数。DH0605密立根油滴仪本仪器采用CCD成像系统观察油滴的方法来验证电荷的不连续性,测定基本电荷e的大小。监视器分度值采用电子分划板;测试按键均采用数字电子开关;实验相对误差≤3%;
National high-tech enterprises through the ISO9001 quality system certification DH0505 Thermal Expansion Experimental Instrument The Michelson interferometer method of measuring the linear expansion coefficient of the metal, the test sample is heated, the thermal expansion of the metal sample driven flat mirror, Michelson interference optical path difference Changes lead to changes in the interference fringes to test the linear expansion coefficient of the sample. DH0605 Millikan oil drip meter The instrument uses the CCD imaging system to observe the method of oil droplets to verify the discontinuity of the charge and determine the size of the basic charge e. Monitor division value using electronic reticle; test button are used digital electronic switch; experiment relative error ≤ 3%;