Experiment is one of the basic methods of scientific research. According to the purpose of scientific research, we should try our best to exclude the external influence, highlight the main factors, and use some special instruments and equipment to artificially change, control or simulate the research object, so as to make something (or process) happen or reappear, so as to understand natural phenomena, natural attributes and natural laws.

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Famous experiment

1. It is said that Galileo did the experiment of the leaning tower of Pisa, but later Keith Davilin, executive director of the American Center for Language and Information Studies, pointed out that this was a misinformation, and Galileo did not do this experiment.

2. Galileo's oblique rolling ball experiment.

Lavoisier proved that air is composed of oxygen and nitrogen.

4. The frog experiment shows that in the water with slowly rising temperature, the frog will not jump out of the water and be burned to death, which proves the psychological statement that if people do not adapt to the environment obviously, their sense of crisis will decline.

5. Millikan oil drop experiment.

6. Newton dispersion experiment.

7. Michelson-Morey experiment

8. Pasteur bacteria classification and identification experiment