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Smog, or smoke fog, is a type of intense air pollution. The word "smog" was coined in the early 20th century, and is a portmanteau of the words smoke and fog to refer to smoky fog due to its opacity, and odor.
Jun 11, 2016 · What is Smog? Smog is air pollution that reduces visibility. The word “smog” was coined in the early 20th century, and is a contraction (portmanteau) of the words smoke and fog to refer to smoky fog due to its opacity, and odour.
May 13, 2024 · Smog, community-wide polluted air. Although the term is derived from the words smoke and fog, it is often used to describe the pall of automotive or industrial origin that lies over many cities, and its composition is variable. At least two distinct types of smog are recognized: sulfurous smog and photochemical smog.
Oct 19, 2023 · Smog is air pollution that reduces visibility. The term "smog" was first used in the early 1900s to describe a mix of smoke and fog. The smoke usually came from burning coal. Smog was common in industrial areas, and remains a familiar sight in some cities today. Today, most of the smog we see is photochemical smog.
Jan 2, 2023 · What is Smog? The term was first used to describe smoky fog in the early 20th century because of its opacity and odor. This sort of observable air pollution is made up of smoke, ozone, nitrogen oxides, sulfur oxides, and other particulates.
3 days ago · Smog is a mixture of nitrogen oxides, sulfur oxide, ozone, smoke, and other particulates. The kind of visible man-made pollution is derived from industrial emissions, coal combustion emissions, vehicle emissions, forest and agriculture fires along with photochemical reactions of these emissions.
What is smog and how can it be prevented? - BBC Science Focus Magazine.
Smog is mainly made of ground-level ozone and particulate matter. Here, Caltech scientists explain the smog formation process.
Aug 24, 2021 · Smog is a mixture of air pollutants— nitrogen oxides and volatile organic compounds —that combine with sunlight to form ozone. Ozone can be beneficial or harmful depending on its location.
Oct 31, 2023 · Smog (sometimes referred to as ground-level ozone) occurs when emissions from combusting fossil fuels react with sunlight. Soot—a type of particulate matter—is made up of tiny particles of...
