CAMBRIDGE, England â British scientist Stephen Hawking has decoded some of the most puzzling mysteries of the universe but he has left one mystery unsolved: How he has managed to survive so long with such a crippling disease.
Brownian movement. n. 1. (General Physics) random movement of microscopic particles suspended in a fluid, caused by bombardment of the particles by molecules of the fluid. First observed in 1827, it provided strong evidence in support of the kinetic theory of molecules.
Brownian motion is a random motion produced by the vibration of molecules by ambient heat energy. Motility is the ability to move spontaneously and independently using inter â¦ nal energy stores to effect the movement. It can apply to either single-celled or multicellular organisms. Thus Brownian motion just happens but motility is a deliberate act.