This property first of all observed by British Botanist, Robert Brown in 1827, during the movement of pollen grains in water by microscope .If a drop of liquid with particles suspended in it, is observed under a microscope, it is seen that the particles are not at rest but they are moving in all direction in zig-zag motion. This motion is called as Brownian movement after the name, who observed it. "A continuous, rapid, zig-zag motion of suspended particles through the medium is called...
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