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The surface temperature of Mercury ranges from 100 to 700 K (−173 to 427 °C; −280 to 800 °F). [80] It never rises above 180 K at the poles, [15] due to the absence of an atmosphere and a steep temperature gradient between the equator and the poles.
A medical mercury-in-glass maximum thermometer showing the temperature of 38.7 °C (101.7 °F). One special kind of mercury-in-glass thermometer, called a maximum thermometer, works by having a constriction in the neck close to the bulb. As the temperature rises, the mercury is pushed up through the constriction by the force of expansion.
The temperature of Mercury's exosphere depends on species as well as geographical location. For exospheric atomic hydrogen, the temperature appears to be about 420 K, a value obtained by both Mariner 10 and MESSENGER. [4] The temperature for sodium is much higher, reaching 750–1,500 K on the equator and 1,500–3,500 K at the poles. [15]
Mercury-in-glass thermometer measuring an ambient temperature of 23 °C (73 °F) a little above the normal "room temperature" range. Room temperature, colloquially, denotes the range of air temperatures most people find comfortable indoors while dressed in typical clothing. Comfortable temperatures can be extended beyond this range depending on ...
Mercury thermometer (mercury-in-glass thermometer) ... [19] [29] That is to say, throughout the range of temperatures for which it is intended to work, (a) at a given ...
Mercury is a chemical ... mercury is the only metallic element that is known to be liquid at standard temperature and pressure ... at a range of 0.0065 – 0.523 ...
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For example, the length of a column of mercury, confined in a glass-walled capillary tube, is dependent largely on temperature and is the basis of the very useful mercury-in-glass thermometer. Such scales are valid only within convenient ranges of temperature.