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Questions tagged [black-body]

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1answer
117 views

Questions about Planck’s law

Two questions: I read online that all objects emit the majority of their thermal radiation in the radio, and that this emission increases with temperature. Does this mean that all glowing bodies emit ...
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1answer
58 views

Trouble with plotting a graph for the Planck function

Here is my problem statement: For a temperature of $7.3 \times 10^5 \ \text{K}$, make a graph of the Plank function (Eq. 3.24), plotting $\log_{10}{\nu} B_\nu(T)$ vs $\log_{10} \nu$ for $\log_{10} \...
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3answers
148 views

How to Distinguish between Temperature and Doppler effect using Black-body radiation?

I understand that the radiation of a body can be described using the curve for black-body radiation. In the sense that a hotter body will be blue shifted and a cooler body will be red shifted. The ...
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1answer
82 views

Can hawking radiation be eaten by another blackhole?

Just a theory, from this video. At last, only the black holes are gonna exist and even they'll decay because of hawkings radiation. As black holes emit hawkings radiation, then if one emits it, ...
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2answers
77 views

Strange behaviour of black holes [duplicate]

We know black holes emit streams of radiation ,also recently discovered that they emit visible light when they eat any nearby matter . "We find that activity in the vicinity of a black hole ...
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1answer
53 views

Where can we find astronomical real world data (spectral radiance and wavelength particularly) of a star?

I have my college project and I thought of finding the temperature of a star with the black-body curve of star but i need real data. I searched but can't find the thing what I want. all I am getting ...
6
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1answer
879 views

What does a black dwarf look like?

A black dwarf is a hypothetical object that is the end result of the cooling of a white dwarf. None yet exist, because there hasn't been enough time in the age of the universe for them to cool down ...
2
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1answer
372 views

Future redshifting and effect on the 'pitch' of CMB radiation

After discovering this question exploring the sound of a blackbody, I started wondering about the sound of the Cosmic Microwave Background radiation from the Big Bang, specifically what the current ...
2
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1answer
125 views

In what manner is the spectrum of a black body really a continuum?

Usually they say the spectrum of a black body is a continuum and emits radiation at every frequency. Is it really a continuum like a line or are there (small) intervals? For example, can a body emit ...