Sentences with phrase «body surface emits»

The technology works on the premise that the horse's body surface emits infrared radiation that can be detected by an infrared camera.

Not exact matches

The biggest difference between the pad and the blanket are that the pad emits heat from below the body, providing a more comfortable and warm sleeping surface.

The Sun is close to being a «black body» — that is, the light it emits is very much like that from a hypothetical black surface that absorbs all the radiation falling on it.

Geologist John Michell wrote in a letter to the Royal Society that if a star were massive enough, «a body falling from an infinite height towards it would have acquired at its surface greater velocity than that of light... all light emitted from such a body would be made to return towards it by its own proper gravity».

How can the earth be radiating a crude BB type spectrum corresponding to the surface Temperature when Trenberth claims that only 40 W / m ^ 2 escapes to space in the atmospheric window, and folks insist that the main body of the atmosphere (gases) does not emit thermal radiation.

(d) If you surround this black body with another black (or grey) body which has no internal energy source, the presence of the surrounding black / grey body will likely alter the surface temperature of the emitting black body.

This mistake came from Sagan and was adopted by Houghton along with the claim that the Earth's surface emits real IR energy to the atmosphere at black body level and that the atmosphere is a grey body emitter / absorber.

Bryan: The basic law of radiation heat transfer which denotes that the equilibrium temperature of a black body surface varies as the fourth root of the radiative energy it emits?

This high frequency light comes in, hit the cold surface, warms it up a bit and emits a black body spectrum of frequencies outward, most of these being below our cutoff frequency of our shell.

Thus the Earth Surface will emit energy to the Atmosphere very similar to that of a black body at about 288 K. Any objection to that?

I think we all agree that the Earth Surface emits pretty much like a black body, with a distribution of wavelengths from around 5μm to above 50μm.

I did not claim that the Atmosphere, after being excited by radiation coming up from the Surface, emits down towards the Surface and up towards Space exactly like a black body, just that it emits at a variety of wavelengths.

The fundamental equation of radiative transfer at the emitting surface of an astronomical body, relating changes in radiant - energy flux to changes in temperature, is the Stefan - Boltzmann equation --

«You calculated the emissions of the whole surface area of the solar sphere here: (4 * π * 6.955 * 10 ^ 8m ^ 2) From here: Body A emits: 5) p = εσT ^ 4.

A black body is an imaginary, ideal surface that can absorb / emit any wavelength.

We are asked to believe that a perfectly good solid or liquid surface is emitting BB like contiunous spectra, based only on the Temperature of the material; but the instant that material evaporates or sublimes, and becomes a vapor at the same tem [ertaure, the radiation must cease, because it is a gas, and gases do not emit black body like thermal radiation.

The simple Planck calculation works for a surface absorbing / emitting as a black body, with zero heat capacity and change in the surface turbulent heat loss.