The experiment exam of the 53rd International Physics Olympiad was introduced.The exam included two independent tasks which were"mass measurement"and"thickness measurement u-sing birefringence".The exam of"mass measurement"drew on the basic idea of the Keble scale,in-cluded the knowledge of Hooke's law,Amperage force,electromagnetic induction law,and spring os-cillator resonance,examined the ability of the contestants in basic measurement,data processing,mapping and uncertainty assessment.The exam of"thickness measurement using birefringence"re-quested to build own device like a spectrometer,made spectral measurements by grating diffraction,combined with polarized light interference to measure the thickness of the birefringent materia.The exam of the instrument adjustment requirements was relatively high and the amount of measurement data was also relatively large.In this paper,the test questions and reference answers were introduced in detail.
关键词
国际物理奥林匹克竞赛/质量测量/双折射
Key words
International Physics Olympiad/mass measurement/birefringence
维普
万方数据