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Measure the refractive index of liquid by Newton Central interference Abstract: Based on Newton's rings experiment, the paper presents a new method of detailed use of Newton's rings measuring the refractive index of liquids . By some measurement of the refractive index of liquids, and compared the theoretical and experimental results of the refractive index of the two methods of liquid measuring (grazing law and the use of Newton's rings measuring interference fringes radius) ,it shows the advantages of Newton's rings . And analysis the easy causes in measurement . Key words: refractive index; interference; grazing; Newton ring; liquid. Teaching design of Secondary school physics experiment Abstract: According to the physics teaching trend of reform and development, combined with the importance of physics experiments and problems in secondary schools teaching , this paper points out that the necessity of teaching physics experiments, and focus on the specific approach of the teaching design of physics experiment in secondary school . Key words: secondary school physics, experimental teaching, design Newton Central interfere with the refractive index measurement of liquid Abstract: Based on Newton's rings experiment, the system presents a detailed use of Newton's rings measuring the refractive index of liquids new method. By some measure the refractive index of liquids, and liquid measuring the refractive index of the two methods (grazing law and the use of Newton's rings measuring interference fringes radius) the theoretical and experimental results are compared in order to manifest the advantages of Newton's rings . And easy measurement of the causes of error. Key words: refractive index; interference; grazing; Newton ring; liquid. Secondary school physics experiment teaching design Abstract: According to the physics teaching trend of reform and development, combined with secondary schools teaching the importance of physics experiments and problems, pointing out that the necessity of teaching physics experiments, and focus on teaching secondary school physics experiment design of the specific approach. Key words: secondary school physics, experimental teaching, design |