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The phenomenon, when taken to mean "hot water freezes faster than cold", is difficult to reproduce or confirm because it is ill-defined. [4] Monwhea Jeng proposed a more precise wording: "There exists a set of initial parameters, and a pair of temperatures, such that given two bodies of water identical in these parameters, and differing only in initial uniform temperatures, the hot one will ...
The motivating impulse for the Times to finally run the puzzle (which took over 20 years even though its publisher, Arthur Hays Sulzberger, was a longtime crossword fan) appears to have been the bombing of Pearl Harbor; in a memo dated December 18, 1941, an editor conceded that the puzzle deserved space in the paper, considering what was ...
The freezing speed directly influences the nucleation process and ice crystal size. A supercooled liquid will stay in a liquid state below the normal freezing point when it has little opportunity for nucleation—that is, if it is pure enough and is in a smooth-enough container. Once agitated it will rapidly become a solid.
Air volume fraction during ice growth period is typically around 1–2 %, but may substantially increase upon ice warming. [18] Air volume of sea ice in can be as high as 15 % in summer [19] and 4 % in autumn. [20] Both brine and air volumes influence sea-ice density values, which are typically around 840–910 kg/m 3 for first-year ice. Sea ...
Freezing is a phase transition in which a liquid turns into a solid when its temperature is lowered below its freezing point. [ 1 ] [ 2 ] For most substances, the melting and freezing points are the same temperature; however, certain substances possess differing solid-liquid transition temperatures.
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For example, many weekday newspaper puzzles (such as the American New York Times crossword puzzle) are 15×15 squares, while weekend puzzles may be 21×21, 23×23, or 25×25. The New York Times puzzles also set a common pattern for American crosswords by increasing in difficulty throughout the week: their Monday puzzles are the easiest and the ...