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प्रश्न
Name the scientist who studied the movement of pollen grains suspended in water through a microscope. What is this phenomenon known as?
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उत्तर
Robert Brown studied the movement of pollen grains suspended in water through a microscope. He observed that the pollen grains moved in a zigzag motion. This phenomenon is called Brownian motion and it provides an evidence for existence and movement of particles.
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