Search results
Results From The WOW.Com Content Network
Temperature is important in all fields of natural science, including physics, chemistry, Earth science, astronomy, medicine, biology, ecology, material science, metallurgy, mechanical engineering and geography as well as most aspects of daily life.
Increasing the temperature of the reproductive organs in plants results in more frequent visitations from pollinators and an increase in the rate of metabolic processes. [7] Factors that affect the capture and maintaining of heat in plants include flower orientation, size and shape, coloration, opening and closure, pubescence, and thermogenesis .
Scale of temperature is a methodology of calibrating the physical quantity temperature in metrology. Empirical scales measure temperature in relation to convenient and stable parameters or reference points , such as the freezing and boiling point of water .
Such thermometers are usually calibrated so that one can read the temperature simply by observing the level of the fluid in the thermometer. Another type of thermometer that is not really used much in practice, but is important from a theoretical standpoint, is the gas thermometer. Other important devices for measuring temperature include:
This is why the temperature change is defined in terms of a 20-year average, which reduces the noise of hot and cold years and decadal climate patterns, and detects the long-term signal. [ 63 ] : 5 [ 64 ]
The temperature reached in a process was estimated by the shrinkage of a sample of clay. The higher the temperature, the more the shrinkage. This was the only available more or less reliable method of measurement of temperatures above 1000 °C (1,832 °F). But such shrinkage is irreversible. The clay does not expand again on cooling.
A thermodynamic temperature of zero is of particular importance for the third law of thermodynamics. By convention, it is reported on the Kelvin scale of temperature in which the unit of measurement is the kelvin (unit symbol: K). For comparison, a temperature of 295 K corresponds to 21.85 °C and 71.33 °F.
Bedrooms are of importance because they need to accommodate different levels of clothing and also different metabolic rates of people asleep or awake. [74] Discomfort hours is a common metric used to evaluate the thermal performance of a space. Thermal comfort research in clothing is currently being done by the military.