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The word "smog" was coined in the early 20th century, and is a portmanteau of the words smoke and fog [1] to refer to smoky fog due to its opacity, and odour. [2] The word was then intended to refer to what was sometimes known as pea soup fog, a familiar and serious problem in London from the 19th century to the mid-20th century, where it was ...
smog, from smoke and fog [2] smothercate, from smother and suffocate [2] Snowmageddon, from snow and Armageddon [2] solemncholy, from solemn and melancholy [2] splatter, from splash and spatter [5] squarson, from squire and parson [2] squirl, from squiggle and twirl or whirl [2] stash, from store or stow and cache [5] staycation, from stay and ...
NO 2 also reacts with ozone to form nitrate radical NO 2 + O 3 → NO 3 + O 2. During the daytime, NO 3 is quickly photolyzed back to NO 2, but at night it can react with a second NO 2 to form dinitrogen pentoxide. NO 2 + NO 3 (+M) → N 2 O 5 (+M). N 2 O 5 reacts rapidly with liquid water (in aerosol particles or cloud drops, but not in the ...
Peroxyacetyl nitrate (C 2 H 3 NO 5): formed from NO x and VOCs, like ozone. Photochemical smog: particles are formed from gaseous primary contaminants and chemicals. [95] Smog is a type of pollution that occurs in the atmosphere. Smog is caused by a huge volume of coal being burned in a certain region, resulting in a mixture of smoke and sulfur ...
Smoke particulates, like other aerosols, are categorized into three modes based on particle size: nuclei mode, with geometric mean radius between 2.5 and 20 nm, likely forming by condensation of carbon moieties. accumulation mode, ranging between 75 and 250 nm and formed by coagulation of nuclei mode particles
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New Delhi, India has spent days under a haze so thick officials have canceled school and delayed flights. Arvind Kejriwal, the chief minister of Delhi, even likened the city to a “gas chamber ...
Scientific terminology is the part of the language that is used by scientists in the context of their professional activities. While studying nature, scientists often encounter or create new material or immaterial objects and concepts and are compelled to name them.