A qualitative analysis of hologram with double beam interference and grating diffraction principles given in general physics is given.

基于普物光学的双光束干涉和光栅衍射，定性分析全息照相。

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Then, we make a qualitative comparison of the system and the form of physics experiment contents of high school of China, HongKong, Canada, England and America.

其次，对中国、中国香港、加拿大、英国、美国的中学科学实验和探究内容，在体系、呈现形式进行了定量的比较。

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