In 1827 which one of the following scientist observed the movement of pollen grains in water under microscope?
سن 1827 میں مندرجہ ذیل میں سے کون سا سائنسدان نے مائکروسکوپ کے تحت پانی میں جرگ اناج کی نقل و حرکت کا مشاہدہ کیا؟
Answer: Robert Brown
Explanation
In 1827, Robert Brown observed the random movement of pollen grains suspended in water under a microscope.
This phenomenon was later termed Brownian motion, describing the erratic motion of particles in a fluid.
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