Why does the CMB have a spectrum like a black-body radiation?
Mar 11, 2023 · The conditions would have been as in an ideal black body characterized by a radiation temperature and a Planck distribution. That would correspond to an extremely hot radiation …
How can blackbody radiation be explained by quantization?
Sep 26, 2024 · The process in a black body is continous fully absorption of incident photon and emition at some other energy. (spectral density or black body curve with your saying) Since we are talking …
Why is the Sun approximated as a black body at ~ 5800 K?
Mar 20, 2019 · 26 Apparently spectral solar radiation is approximated by a black body at 5800 K. The spectral black body distribution (Planck distribution) is shown below (from Incropera, Fundamentals …
Mechanism of blackbody radiation - Physics Stack Exchange
Jan 21, 2022 · Black body is a theoretical concept - a body that can emit and absorbs radiation at all frequencies, and which absorbs all the radiation incident on it (i.e., there is no reflection). Electrical …
Does fire emit black-body radiation? - Physics Stack Exchange
Jun 28, 2021 · Question: Can the radiation emitted by fire be approximated by black body spectrum? It has been discussed in this community that black-body spectrum mostly serves as an approximation …
If a black body is a perfect absorber, why does it emit anything?
Feb 24, 2015 · A black body is an ideal absorber, i.e., a black body does not reflect or transmit any incident electromagnetic radiation. An object in thermal equilibrium with the environment emits …
thermodynamics - How does radiation become black-body radiation ...
Jun 15, 2021 · 17 Textbooks treat black body radiation as radiation in thermal equilibrium with its environment (more specifically - with a black body): Planck's formula is essentially derived from the …
How does the concept of a "black body" make any sense?
Dec 8, 2014 · A black body is a body that contains the radiation coming from the molecular energy levels and radiates it from the surface . Real bodies have constants modifying the formula, but the basic …
Can a black body be in thermal equilibrium if it absorbs thermal ...
Dec 21, 2024 · A black body is an object that allows all incident radiation to enter into its interior and absorbs it completely (no radiation is reflected at the external surface or exits the body after entering …
quantum mechanics - How does blackbody radiation suggest the ...
Jan 2, 2023 · We can say that the goal of classical physicists studying black body radiation is to determine $\phi (T\lambda)$. Arguments for deriving this function are typically based around …