Talk:Phi

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Grain Size

Phi is a symbol used when describing grain size in sedimentology. Wentworth and Krumbian scales both use φ to describe the size of individual sediment particles.

This should be added to the list of scientific measurements that utilize phi.

See more here: https://en.wikipedia.org/wiki/Grain_size

alternate symbol

the first line "lowercase φ or ϕ" shows two identical symbols on my computer and it's not clear how they are distinguished. i'm not sure how you could guarantee that both different symbols are shown.

Unicode

The first paragraph in the "Unicode" section, following the table, should be reconsidered/edited. As noted, browser/font variations display phi differently, so reference to a "loopy" or "open" phi might be displaying the "closed" phi. The resulting formatted text is possibly inconsistent and likely confusing (in my case, the mark-up version displays a barely open version while the formatted version shows a clearly closed/separate-stroked version). I would think it would be clear using the GrGl "" element as in the table, or more clearly the LaTeX version $\varphi$ (also, I think "LaTeX" should be just "TeX", or maybe "TeX/LaTeX") . Beorn Johnson (talk) 00:47, 29 June 2025 (UTC)[reply]