Talk:Black body

Black body was a good articles nominee, but did not meet the good article criteria at the time. There may be suggestions below for improving the article. Once these issues have been addressed, the article can be renominated. Editors may also seek a reassessment of the decision if they believe there was a mistake.

Article milestones
Date	Process	Result
July 21, 2006	Good article nominee	Not listed

Physics Top‑importance

	Physics portal This article is within the scope of WikiProject Physics, a collaborative effort to improve the coverage of Physics on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.PhysicsWikipedia:WikiProject PhysicsTemplate:WikiProject Physicsphysics articles
Top	This article has been rated as Top-importance on the project's importance scale.

Color Mid‑importance

	This article is supported by WikiProject Color, a project that provides a central approach to color-related subjects on Wikipedia. Help us improve articles to good and 1.0 standards; visit the wikiproject page for more details.ColorWikipedia:WikiProject ColorTemplate:WikiProject Colorcolor articles
Mid	This article has been rated as Mid-importance on the project's importance scale.

Archives

Archive 1 (March 2004 – Nov 2009)
Archive 2 (July 2006 – Oct 2010)
Archive 3 (Dec 2010 – Jan 2012)
Archive 4 (Jan – Feb 2012)
Archive 5 (Jan – Feb 2012)
Archive 6 (Feb 2012 – )

This page has archives. Sections older than 90 days may be automatically archived by when more than 4 sections are present.

What is it for?

The article starts out with "A black body or blackbody is an idealized physical body...". At that point it should say why anyone would want to idealize a body and here should be examples of what a "body" is. I'm not expert enough to add it myself, but something along the lines of "... that is used as a stand-in for actual physical objects, such as planets and humans, in order to simplify the math required to model them."

Math error?

At the time of writing this comment, the Black Holes section has a formula that drops the following error (in the Brave browser, running on macOS Big Sur):

Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "/mathoid/local/v1/":): {\displaystyle T=\frac {\hbar c^3}{8\pi Gk_\text{B}M} \ ,}

I'm not familiar enough with MathML or the <math> tag to be of any help, and my only hope is that someone who follows this page (or has it on their watchlist) is able to check it and correct the error.

Feel free to remove this message once the issue is fixed. — Gwyneth Llewelyn (talk) 19:17, 6 March 2023 (UTC)[reply]

Space to include band emission

The page for band emission could be easily slotted in to this article under Idealizations, though I don't know if there's enough there to warrant its own subheading or if it could be added under a heading like: Band emissions with justification of why measuring the emissions over a specific spectral band is useful. Reconrabbit (talk) 19:02, 11 December 2023 (UTC)[reply]

Black body absorption and emission? Which is king?

I am trying to understand black bodies (bb), not being a physicist. This article, like others I have read, talks about absorption and emissions of radiation. Absorption by a bb is defined to be 100% of incident radiation. In the next sentence, at the beginning, we are told that a bb emits radiation. Confusingly, that suggests that absorption is not 100%; some is going back out. Emission qualities depend on the temperature. Is the temperature determined by the absorbed radiation? Or just by an independent local heat source? Is the thermal capacity of the bb relevant to heating caused by absorbed radiation? Is the relevance of a bb to physics because it absorbs, it emits, or both? Or is it because it transforms incident radiation into outgoing radiation with different properties dependent on its temperature which is determined by what?? Any clarifications would be appreciated. KPD674 (talk) 11:35, 17 August 2024 (UTC)[reply]