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.

Additional Example for the Use of Phi as a Symbol

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Phi is the symbol for the world of Phyrexia in the story of the card game Magic: The Gathering.

Edit: here's an article from wizards of the coast (the company who owns magic: the gathering) about the symbol: https://magic.wizards.com/en/articles/archive/phyrexian-symbol-again-2011-05-18 Dodo Axolotl (talk) 16:26, 28 May 2022 (UTC)[reply]

Not done: please provide reliable sources that support the change you want to be made. Secondary sources are needed to show that this is noteworthy. ScottishFinnishRadish (talk) 16:39, 28 May 2022 (UTC)[reply]

Hoping that counts as a reliable source! Dodo Axolotl (talk) 12:04, 2 June 2022 (UTC)[reply]

Semi-protected edit request on 8 June 2022

It is requested that an edit be made to the semi-protected article at Phi. (edit · history · last · links · protection log)

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CHANGE "In probability theory, ϕ(x) = (2π)−1⁄2e−x2/2 is the probability density function of the standard normal distribution." to "In probability theory, ϕ(x) = (2π)−1⁄2e−x2/2 is the cumulative distribution function of the standard normal distribution." 138.51.72.65 (talk) 23:15, 8 June 2022 (UTC)[reply]