Physics 8 Lesson 20: Are atoms and molecules moving or at rest?

Physics 8 Lesson 20: Are atoms and molecules moving or at rest? 1. Theoretical summary 1.1. Brown’s Experiment a) Experiment: 1827 – The botanist (British) Berao observed pollen grains in water with a microscope and discovered that they were in constant motion in all directions. When pounded or boiled, the pollen grains are still in […]

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