Aerosol
Aerosol
Aerosol (/ˈeɪrəsɔːl/, /ˈɛrəsɔːl/) is a suspension of fine solid particles or liquid droplets in air or another gas. Aerosols can be natural or anthropogenic. Examples of natural aerosols are fog, forest exudates and geyser steam. Examples of anthropogenic aerosols are haze, particulate air pollutants and smoke.
Etymology
The word Aerosol is derived from the Greek words "aero" (air) and "sol" (solution). It was first used in the early 20th century to describe a new method of dispensing medication by suspending it in air.
Related Terms
- Particulate matter: Tiny particles suspended in the air, a major component of aerosols.
- Air pollution: The presence of substances in the air that are harmful to the health of humans and other living beings, or cause damage to the climate or to materials. Aerosols can contribute to air pollution.
- Haze: A slight obscuration of the lower atmosphere, typically caused by fine suspended particles, a form of aerosol.
- Fog: A visible aerosol consisting of tiny water droplets or ice crystals suspended in the air at or near the Earth's surface.
- Smoke: A collection of airborne solid and liquid particulates and gases emitted when a material undergoes combustion, a form of aerosol.
External links
- Medical encyclopedia article on Aerosol
- Wikipedia's article - Aerosol
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