Fog Causes And Effect Of Fog - 2335 Words

Introduction Out of all existing weather patterns, fog is probably the most unique, but it is also very dangerous. Since the fog is a natural and often occurring weather pattern in the Central Valley, it is important to understand how fog forms as well as what methods can be utilized to help prevent car accidents from occurring. Fog is a cloud that holds either several water drops or ice crystals. It differs from mist because it severely reduces visibility; in order to be considered fog, it must lower visibility to one kilometer, or 5/8 of a mile (Gultepe, et al. 1126). This lack of visibility is caused by the drops or crystals themselves: there is a â€Å"reduction in the brightness contrast between an object and its background by particle concentration and size-dependent scattering losses of the light propagating between the object and the observer†¦Ã¢â‚¬  (Gultepe, et al. 1126). Basically, this means that there is a lessening of the difference between a certain item and the background of it as well as the scattering of light, and this is due to the droplets or crystals, as mentioned before. Fog can develop in either of these two modes: by cooling or evaporation and mixing. In order for fog to develop by cooling, the air must be cooled at a temperature below the dew point (or saturation point) (Ahrens and Samson 97). For fog to form by evaporation and mixing, evaporation must occur, allowing for the moist air to blend with the dry air. After the fog materializes, it is necessaryShow MoreRelatedThe Counterculture Of The 1960s From The Anti Authoritarian Engagements Of Preceding Decades1132 Words   |  5 Pagespreoccupied their Depression-era parents. People started to recognize that they could get what they want if they work hard enough for it, and if their voice is loud enough. 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