Sentences with word «blackbody»
A blackbody refers to an object that absorbs all the light and radiation that falls on it, without reflecting or transmitting any of it. This means that a blackbody appears completely black and emits radiation solely based on its temperature. Full definition
You objected that liquid nitrogen temperatures could be higher than the effective blackbody temperature of deep space, which is about 3K.
judithcurry.com
Why not start with a pure theoritical 24 hour rotating blackbody with 1/2 recieving full spectrum 1370 watts, from an object of approximately 30 arc min.
Finally if I am not mistaken the temperature of the top layer of an atmosphere consisting of n blackbody shells should be Tg / -LRB-(n +1) **.25) not Tg / (2.
where B (Tg, λ) is the Planck blackbody curve as a function of temperature, Tg of the gas, and wavelength λ
Our results suggest that the size of the smooth cloud, a dominant component in the model, is by about 10 % more compact than previously thought, and that the dust sizes are not large enough to emit blackbody radiation in the mid-IR.
What's more, since the albedo increases substantially, the total greenhouse effect can be thought of as providing even more than 33 K of warming relative to Earth's blackbody emission temperature.
As usual, a temperature increase begins around 1 / 10th of sea level pressure and proceeds to exceed the 254 Kelvin blackbody prediction for the Earth.
To summarize (with the simplifying assumptions of zero non-Planck feedbacks, a perfect blackbody surface for LW, and that all solar heating is at the surface, or at least beneath the tropopause — which is not to say that none of this applies to all other cases):
Its main argument is that idealized blackbody calculations did not correctly predict the Moon's surface temperatures in the 1960s because other factors besides radiative heat transfer equations actually determine real surface temperatures.
I am not saying the atmosphere is like the n - blackbody shell atmosphere.
Over this is superimposed a set of smooth curves of ideal blackbody radiation, labeled with temperatures.
«Brightness temperature» indicates equivalent blackbody temperature (Harries 2001).
This is called the Planck feedback because it is fundamentally due to the Planck blackbody radiation law (warmer temperatures = higher emission).
To build their device, the M.I.T. scientists used carbon nanotubes, which are extremely effective absorbers of sunlight; they approach theoretical «blackbody absorbers» that take in 100 percent of light shone on them.
Beginning around 1 / 10th the air pressure of the Earth at sea level, Jupiter's atmospheric temperature rises and easily exceeds its predicted blackbody temperature of 110 Kelvin.