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Brownian motion is the random motion of particles suspended in a medium (a liquid or a gas). [2] This motion pattern typically consists of random fluctuations in a particle's position inside a fluid sub-domain, followed by a relocation to another sub-domain. Each relocation is followed by more fluctuations within the new closed volume.
The fluid velocity decays from for fluid in contact with the surface of the particle, to near zero, within the interface at the particle's surface. Diffusiophoresis is the spontaneous motion of colloidal particles or molecules in a fluid, induced by a concentration gradient of a different substance.
Suspended solids refers to small solid particles which remain in suspension in water as a colloid or due to motion of the water. Suspended solids can be removed by sedimentation if their size or density is comparatively large, or by filtration. [1] It is used as one indicator of water quality and of the strength of sewage, or wastewater in general.
Temperature, for example, arises from the intensity of random particle motion caused by kinetic energy (known as Brownian motion). As temperature is reduced to absolute zero, it might be thought that all motion ceases and particles come completely to rest. In fact, however, kinetic energy is retained by particles even at the lowest possible ...
The concept of diffusion is widely used in many fields, including physics (particle diffusion), chemistry, biology, sociology, economics, statistics, data science, and finance (diffusion of people, ideas, data and price values). The central idea of diffusion, however, is common to all of these: a substance or collection undergoing diffusion ...
Deposition due to Brownian motion obeys both Fick's first and second laws. The resulting deposition flux is defined as J = n D π t {\textstyle J=n{\sqrt {\frac {D}{\pi t}}}} , where J is deposition flux, n is the initial number density , D is the diffusion constant and t is time.
Cell division. All cells can be considered motile for having the ability to divide into two new daughter cells. [1]Motility is the ability of an organism to move independently using metabolic energy.
Contrary to brownian motion, which is the diffusion of a single particle, interactions between particles may have to be considered, unless the particles form an ideal mix with their solvent (ideal mix conditions correspond to the case where the interactions between the solvent and particles are identical to the interactions between particles ...