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What are the different types of smog?
Is smog a type of air pollution?
What is classical smog?
What is the difference between classical and photochemical smog?
Learn the differences and similarities between classical smog and photochemical smog, two types of air pollution with distinct origins and characteristics. Find out how they affect human health and the environment, and what control measures are needed to reduce them.
Learn about the history, chemistry and effects of two types of smog: London smog and photochemical smog. Find out how coal combustion, meteorological conditions and pollutants contribute to smog formation and health hazards.
Smog is a kind of air pollution that is a blend of smoke and fog. Learn about the two types of smog: classical and photochemical, and how they differ in occurrence, components and nature.
May 13, 2024 · Smog is polluted air that can be caused by smoke, fog, or photochemical reactions. Learn about the two main types of smog: sulfurous and photochemical, and their effects on health and environment.
- The Editors of Encyclopaedia Britannica
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.
6 days ago · Classical Smog. When there is a high concentration of sulfur dioxide and particulate matter produced due to fuel combustion, classical smog is created. This happens in humid and cold climates. It is also known as Sulphurous smog, or London smog, and causes the atmosphere to be dark brownish in colour.
Classical smog. This is the typical form of smog found in areas which have a humid climate. It is a mixture of smoke, fog and sulphur dioxide. This smog acts as a reducing agent in atmospheric pollution and hence it is also known as reducing smog. Photochemical smog. This type of smog is prevalent in dry and sunny areas of the world.
