the another name of aresol pollution
Answers
Answer:An aerosol is a suspension of fine solid particles or liquid droplets in air or another gas.[1] Aerosols can be natural or anthropogenic. Examples of natural aerosols are fog or mist, dust, forest exudates and geyser steam. Examples of anthropogenic aerosols are particulate air pollutants and smoke.[1] The liquid or solid particles have diameters typically less than 1 μm; larger particles with a significant settling speed make the mixture a suspension, but the distinction is not clear-cut. In general conversation, aerosol usually refers to an aerosol spray that delivers a consumer product from a can or similar container. Other technological applications of aerosols include dispersal of pesticides, medical treatment of respiratory illnesses, and combustion technology.[2] Diseases can also spread by means of small droplets in the breath, also called aerosols (or sometimes bioaerosols).[3]
Aerosol science covers generation and removal of aerosols, technological application of aerosols, effects of aerosols on the environment and people, and other topics.[1]
Contents
1 Definitions
2 Size distribution
3 Physics
3.1 Terminal velocity of a particle in a fluid
3.2 Aerodynamic diameter
3.3 Dynamics
3.3.1 Coagulation
3.3.2 Dynamics regimes
3.3.3 Partitioning
3.3.4 Activation
3.3.5 Solution to the general dynamic equation
4 Generation and applications
5 Stability of generated aerosol particles
6 Detection
6.1 In situ observations
6.2 Remote sensing approach
6.3 Size selective sampling
7 Atmospheric
7.1 Effects
8 See also
9 References
10 Works cited
11 Further reading
12 External links
Definitions
Fly ash particles shown at 2,000 times magnification
Photomicrograph made with a Scanning Electron Microscope (SEM): Fly ash particles at 2,000× magnification. Most of the particles in this aerosol are nearly spherical.
Aerosol is defined as a suspension system of solid or liquid particles in a gas. An aerosol includes both the particles and the suspending gas, which is usually air.[1] Frederick G. Donnan presumably first used the term aerosol during World War I to describe an aero-solution, clouds of microscopic particles in air. This term developed analogously to the term hydrosol, a colloid system with water as the dispersed medium.[4] Primary aerosols contain particles introduced directly into the gas; secondary aerosols form through gas-to-particle conversion.
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