Snow comprises individual ice crystals that grow while suspended in the atmosphere—usually within clouds—and then fall, accumulating on the ground where they undergo further changes. It consists of frozen crystalline water throughout its life cycle, starting when, under suitable conditions, the ice crystals form in the atmosphere, increase to millimeter size, precipitate and accumulate on surfaces, then metamorphose in place, and ultimately melt, slide or sublimate away. Snowstorms organize and develop by feeding on sources of atmospheric moisture and cold air. Snowflakes nucleate around particles in the atmosphere by attracting supercooled water droplets, which freeze in hexagonal-shaped crystals. Snowflakes take on a variety of shapes, basic among these are platelets, needles, columns and rime. As snow accumulates into a snowpack, it may blow into drifts. Over time, accumulated snow metamorphoses, by sintering, sublimation and freeze-thaw.
| Density (ρ) | 0.1–0.8 g/cm 3 |
| Tensile strength (σ t) | 1.5–3.5 kPa |
| Compressive strength (σ c) | 3–7 MPa |
| Melting temperature (T m) | 0 °C |
| Thermal conductivity (k) For densities 0.1 to 0.5 g/cm 3 | 0.05–0.7 W/(K·m) |
| Dielectric constant (ε r) For dry snow density 0.1 to 0.9 g/cm 3 | 1–3.2 |
Giới thiệu về Snowfall
From director John Singleton, the show takes place in Los Angeles in the 1980s and follows a marijuana dealer who decides to switch over to crack cocaine.
Thành tựu & Danh hiệu của Snowfall
Showtime was initially set to pick up the show but passed on it after the pilot was made.
Top sự thật mà bạn không biết về Snowfall
Snow Category.. Eskimo words for snow - The claim that Eskimo languages have an unusually large number of words for"snow", first loosely attributed to the work of anthropologist Franz Boas and particularly promoted by his disciple Benjamin Lee Whorf, has become a cliché often used to support the controversial linguistic-relativity.... The wrong type of snow -"The wrong type of snow" or"the wrong kind of snow" is a phrase coined by the British media in 1991 after severe weather caused disruption to many of British Rail's services. A British Rail press release implied that management and its engineering staff were unaware of different types of snow.. 2007 Siberian orange snow - The Siberian orange snow of 2007 was an anomalous phenomenon that occurred in early February 2007.. Alberta clipper - An Alberta clipper, also known as a Canadian clipper, is a fast moving low pressure area weather system which generally affects the central provinces of Canada and parts of the Upper Midwest, Great Lakes, and New England, precipitating a sudden temperature drop and sharp winds.. Skiing - Skiing is a means of transport using skis to glide on snow. Variations of purpose include basic transport, a recreational activity, or a competitive winter sport. Many types of competitive skiing events are recognized by the International Olympic Committee, and the International Ski Federation.. Sled - A sled, sledge, or sleigh is a land vehicle that slides across a surface, usually of ice or snow. It is built with either a smooth underside or a separate body supported by two or more smooth, relatively narrow, longitudinal runners similar in principle to skis.. Forms of water.. Precipitation.. Water ice.. Weather hazards.
