Talk:Angular diameter distance

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Proposed merge from angular size redshift relation[edit]

Done

I'm proposing to merge the article Angular size redshift relation into this one as a separate section, because it's an aspect of the same subject and I think both 'articles' would be improved by being together on the same page. Let me know what you think. Cosmo0 19:02, 20 September 2007 (UTC)[reply]

Graph contains incorrect plot[edit]

The plot of angular distance in megaparsecs has a correct "reference plot" and incorrect "your plot" which uses H/H0 = (density parameters) instead of H/H0 = (density parameters)^1/2. Speno35 (talk) 06:49, 3 May 2021 (UTC)[reply]

Images and/or Diagrams needed[edit]

Images and or diagrams of the object at a distance illustrating that formula, and the expanding universe effect would make these concepts much clearer to most of our readers who don't deal well with formulae. — Lentower (talk) 16:42, 21 May 2022 (UTC)[reply]

xkcd Graphics of Angular Diameter Turnaround[edit]

These xkcd graphics lead me to this article. If someone could get the author to allow use here, it be a large win for this article. As of 21 May 2022^[update], xkcd is much clearer than the text & formulae in this article. — Lentower (talk) 16:59, 21 May 2022 (UTC)[reply]

I was going to say xkcd's CC licensed so permission already exists. But the footer (on xkcd's desktop site) says it's licensed under CC-BY-NC 2.5, whereas Wikimedia Commons's licensing page indicates that CC BY-NC isn't accepted. Maybe Wikipedia itself has somewhat looser licensing requirements for images (e.g., "fair use"), but that still has to pass relevance. Personally, I find the heavy layering in the comic too confusing for it to be worth using, but I guess you can try contacting Munroe via social media links in the header or the email address in the licensing page. 66.210.249.135 (talk) 10:42, 26 May 2022 (UTC)[reply]