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 defined as the continuous and random motion of  the particles suspended in a liquid or in a gas.It is caused by  the collision of these particles with ea â¦ ch other and with the  molecules of the surrounding medium due to their random movement  with varying velocities.he process is called kinetic energy witch is the Random movement of atoms or molecules.