AUTOMOBILE EMISSIONS Meaning and
Definition
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Automobile emissions refer to the exhaust gases and pollutants released into the atmosphere by vehicles powered by internal combustion engines. These emissions are a significant contributor to air pollution, which affects both human health and the environment.
Automobile emissions are primarily composed of several gases, including carbon monoxide (CO), nitrogen oxides (NOx), volatile organic compounds (VOCs), and particulate matter (PM). These pollutants are released during the combustion process in engines when fuel and air react, producing energy to power the vehicle.
Carbon monoxide is a colorless and odorless gas that is poisonous to humans and can impair oxygen delivery to body tissues. Nitrogen oxides are reactive gases that contribute to the formation of smog, acid rain, and the depletion of the ozone layer. Volatile organic compounds are released by fuel evaporation and contribute to the formation of ground-level ozone, a component of smog. Particulate matter consists of tiny particles suspended in the air, including soot and other harmful substances, which can penetrate deep into the lungs and cause respiratory problems.
To mitigate the negative impact of automobile emissions, various regulations and technologies have been developed to reduce pollution. These include catalytic converters, which convert harmful gases into less harmful ones, and the use of cleaner fuels. Additionally, the promotion of electric vehicles and the development of alternative fuels, such as compressed natural gas and hydrogen, aim to significantly reduce automobile emissions and combat air pollution.
Etymology of AUTOMOBILE EMISSIONS
The word "automobile" originated from the Greek words "autos" meaning "self" and "mobilis" meaning "movable". It was first used in the 19th century to refer to a self-propelled vehicle.
The term "emission" comes from the Latin word "emittere", which means "to send forth". It refers to the release or discharge of something, often referring to gases or particles.
Therefore, the term "automobile emissions" combines the word "automobile" with "emissions", indicating the gases or particles released by self-propelled vehicles.
