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In thermodynamics, the enthalpy of sublimation, or heat of sublimation, is the heat required to sublimate (change from solid to gas) one mole of a substance at a given combination of temperature and pressure, usually standard temperature and pressure (STP). It is equal to the cohesive energy of the solid.
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Outgassing is a possible source of many tenuous atmospheres of terrestrial planets or moons. [6] Many materials are volatile relative to the extreme vacuum of outer space, and may evaporate or even boil at ambient temperature.
The most common dyes used for sublimation activate at 350 degrees Fahrenheit / 175 degrees Celsius. However, a range of 380 to 420 degrees Fahrenheit / 195 to 215 degrees Celsius is normally recommended for optimal color. The result of the sublimation transfer process is a nearly permanent, high-resolution, full-color print.
where is a function of the temperature T and a typical wood dimension L and has units of time. The typical wood dimension is roughly the smallest value of (,, /) which are the radial, tangential and longitudinal dimensions respectively, in inches, with the longitudinal dimension divided by ten because water diffuses about 10 times more rapidly ...
This keeps the lid at a lower temperature than the pot bottom. Further, little notches on the inside of the lid allow the moisture to collect and drop back into the food during the cooking. Although the Doufeu (literally, "gentlefire") can be used in an oven (without the ice, as a casserole pan), it is chiefly designed for stove top use.
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Graph of temperature of phases of water heated from −100 °C to 200 °C – the dashed line example shows that melting and heating 1 kg of ice at −50 °C to water at 40 °C needs 600 kJ The terms sensible heat and latent heat refer to energy transferred between a body and its surroundings, defined by the occurrence or non-occurrence of ...