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Smoke is a suspension [3] ... nuclei mode, with geometric mean radius between 2.5 and 20 nm, likely forming by condensation of carbon moieties. accumulation mode, ...
The smoke signal is one of the oldest forms of long-distance communication. It is a form of visual communication used over a long distance. In general smoke signals are used to transmit news, signal danger, or to gather people to a common area.
Smoking is a practice in which a substance is combusted and the resulting smoke is typically inhaled to be tasted and absorbed into the bloodstream of a person. Most commonly, the substance used is the dried leaves of the tobacco plant, which have been rolled with a small rectangle of paper into an elongated cylinder called a cigarette.
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 [ 1 ] to refer to smoky fog due to its opacity, and odor. [ 2 ]
Mayas were perhaps the first people to represent tobacco smoking in art. Mayas smoked heavily, and they believed that their gods did too. [ 1 ] Religious rituals often involved tobacco : offerings were given to certain gods and tobacco smoke warded off evil deities. [ 1 ]
This is an accepted version of this page This is the latest accepted revision, reviewed on 17 November 2024. Number referring to cannabis 420 originally "4:20 Louis" Statue of Louis Pasteur at San Rafael High School, by Benny Bufano (1940), site of the earliest 4:20 gatherings in 1971 Observed by Cannabis counterculture, legal reformers, entheogenic spiritualists, and general users of cannabis ...
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Tobacco smoke, besides being an irritant and significant indoor air pollutant, is known to cause lung cancer, heart disease, chronic obstructive pulmonary disease (COPD), emphysema, and other serious diseases in smokers (and in non-smokers as well). The actual mechanisms by which smoking can cause so many diseases remain largely unknown.