New answers tagged thermal-radiation
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Do black holes convert 100% of their mass into energy via Hawking radiation?
The answer to this question is somewhat subjective, but I would argue that it's still an open question. I don't think that we have any good enough theories of quantum gravity to say with any kind of ...
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Do black holes convert 100% of their mass into energy via Hawking radiation?
It would be far more efficient and feasible, if you had access to a black hole, to convert infalling matter into radiant energy via the accretion disk and/or a Penrose Process.
For the best case of a ...
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Do black holes convert 100% of their mass into energy via Hawking radiation?
Certainly, the total energy of the system has to remain the same, so all the mass of the black hole has to be converted into something that has an energy equivalent. So I think this question really ...
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Do black holes convert 100% of their mass into energy via Hawking radiation?
Over the course of their lifespans, theoretically yes. As far as I know, we have never observed Hawking radiation from an actual macroscopic black hole (on account of the fact that we've never been to ...
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Wien's displacement law
Stars are not perfect blackbodies. They have elements in their atmosphere that absorb and emit light at particular wavelengths. So the general blackbody pattern is slightly modified with lines of ...
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Why does Sun appear white at noon?
Here the solar spectrum illustrated graphically.
A furnace on the Earth at a temperature of $5900\,\rm K$, equivalent to light from a flash gun, would appear white and that is the colour of the Sun ...
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What would the RGB color value of an infinitely hot blackbody be?
The RGB color value of an infinitely hot blackbody approaches a very pale blue as temperature increases. This theoretical limit is calculated using blackbody radiation principles and color science. ...
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Differential form of Planck's Distribution Law interpretation
In case of a function of one variable, $dx$ and $dy$ are full differentials, and the derivative is indeed their ratio. THis, allows mathematical manipulations such as, e.g., deriving the derivative ...
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Differential form of Planck's Distribution Law interpretation
Your question is not fully well-formed. Because of that, I cannot know if you actually had an answerable question underneath it, but I can make some assumptions and try to answer it.
So integrating $\...
- 10.2k
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Is the spectrum of Hawking radiation identical to that of thermal radiation?
There are a few instances where EM loses to other thermal radiation:
Core collapse supernova (100 GK): 99% of the BB radiation is neutrinos. When you have $10^{57}$ nucleons in the volume of the size ...
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Is the spectrum of Hawking radiation identical to that of thermal radiation?
Roughly speaking, a system is said to be thermal if the probability density of a particle at energy $E$ is $p(E) = {\cal N} e^{-E/T}$ (in natural units), where ${\cal N}$ is some constant that we fix ...
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Is the spectrum of Hawking radiation identical to that of thermal radiation?
In everyday life thermal radiation means electromagnetic radiation simply because in everyday life thermal energies are too low to produce massive particles. The lightest massive particle (apart from ...
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Effect of coloring on emissivity at temperatures below 150C?
Radiation can account for a significant portion of heat dissipation from a heat sink that is cooled via natural convection. Referencing the data from the article:
https://www.heatsinkcalculator.com/...
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Accepted
How to estimate thermal conductivity of a sample?
We can expect the findings you observed because the heat flux at any point depends on conduction and radiation (and thus depends on the position, emissivity, thermal conductivity, and surrounding ...
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