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  2. Human thermoregulation - Wikipedia

    en.wikipedia.org/wiki/Human_thermoregulation

    There are four avenues of heat loss: convection, conduction, radiation, and evaporation. If skin temperature is greater than that of the surroundings, the body can lose heat by radiation and conduction. But, if the temperature of the surroundings is greater than that of the skin, the body actually gains heat by radiation and conduction. In such ...

  3. Thermal radiation - Wikipedia

    en.wikipedia.org/wiki/Thermal_radiation

    Radiation waves may travel in unusual patterns compared to conduction heat flow. Radiation allows waves to travel from a heated body through a cold non-absorbing or partially absorbing medium and reach a warmer body again. [14] An example is the case of the radiation waves that travel from the Sun to the Earth.

  4. Homeothermy - Wikipedia

    en.wikipedia.org/wiki/Homeothermy

    Homeothermy, homothermy or homoiothermy [1] is thermoregulation that maintains a stable internal body temperature regardless of external influence. This internal body temperature is often, though not necessarily, higher than the immediate environment [ 2 ] (from Greek ὅμοιος homoios "similar" and θέρμη thermē "heat").

  5. Black-body radiation - Wikipedia

    en.wikipedia.org/wiki/Black-body_radiation

    Kirchhoff then went on to consider some bodies that emit and absorb heat radiation, in an opaque enclosure or cavity, in equilibrium at a temperature T. Here is used a notation different from Kirchhoff's. Here, the emitting power E(T, i) denotes a dimensioned quantity, the total radiation emitted by a body labeled by index i at temperature T.

  6. Radiative cooling - Wikipedia

    en.wikipedia.org/wiki/Radiative_cooling

    In the study of heat transfer, radiative cooling [1] [2] is the process by which a body loses heat by thermal radiation.As Planck's law describes, every physical body spontaneously and continuously emits electromagnetic radiation.

  7. Thermoregulation - Wikipedia

    en.wikipedia.org/wiki/Thermoregulation

    Thermoregulation is the ability of an organism to keep its body temperature within certain boundaries, even when the surrounding temperature is very different. A thermoconforming organism, by contrast, simply adopts the surrounding temperature as its own body temperature, thus avoiding the need for internal thermoregulation.

  8. Mean radiant temperature - Wikipedia

    en.wikipedia.org/wiki/Mean_radiant_temperature

    A handheld wet-bulb globe temperature meter, including a black-globe thermometer (left). The MRT can be estimated using a black-globe thermometer.The black-globe thermometer consists of a black globe in the center of which is placed a temperature sensor such as the bulb of a mercury thermometer, a thermocouple or a resistance probe.

  9. Radiation - Wikipedia

    en.wikipedia.org/wiki/Radiation

    Thermal radiation refers not only to the radiation itself, but also the process by which the surface of an object radiates its thermal energy in the form of black-body radiation. Infrared or red radiation from a common household radiator or electric heater is an example of thermal radiation, as is the heat emitted by an operating incandescent ...