Atmospheric chemistry

Atmospheric chemistry

A scientific study of the chemistry of the Earth's atmosphere and that of other planets.

Industry: Chemistry; Weather

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Atmospheric chemistry

Carbon 14

Chemistry; Atmospheric chemistry

14 C, an isotope of carbon-12 ( 12 C). 14 C contains two more neutrons and is radioactive and used in carbon dating. While carbon-12 is not radioactive, the half life of 14 C is 5730 years. This ...

A period of time in either the early or later hours of the day, just before sunrise and after sunset, when the sun is below the horizon but the sky is still illuminated. Beams of light are scattered ...

Pollutants

Chemistry; Atmospheric chemistry

A pollutant may be considered as any substance, usually an unwanted by-product or waste, that is released into the environment as a result of (human) activities that alter the chemical, physical and ...

Plume

Chemistry; Atmospheric chemistry

A plume is a visible smoke-like structure, which may contain pollutants emitted from an exhaust or smoke stack and released into the atmosphere. This elongated band of smoke has changing ...

Electromagnetic wave

Chemistry; Atmospheric chemistry

A phenomenon that can carry energy through space and is created by the vibration of an electrical charge, which is caused by disturbances in electromagnetic fields. Examples of electromagnetic waves ...

PCV systems

Chemistry; Atmospheric chemistry

A PCV system is an air pollution control device in automobile engines. PCV stands for positive crankcase ventilation. Automobile makers began installing PCV systems in all new cars in 1963. It ...

Photon

Chemistry; Atmospheric chemistry

A particle that has no rest mass, no electrical charge and whose energy is determined by its electromagnetic wavelength. A photon is considered to be an amount of electromagnetic radiation energy ...