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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

Meaning in AI?

In artificial intelligence, a lowercase phi symbol has a standard meaning that escapes me at the moment. Perhaps if someone knows what I'm talking about, it could be added to this page? --5.198.44.45 (talk) 10:58, 15 May 2018 (UTC)[reply]

Semi-protected edit request on 27 February 2019

This edit request has been answered. Set the |answered= or |ans= parameter to no to reactivate your request.

Upper Case Phi is also used in electrical power engineering a short hand for phase (as in Single Phase = 1Φ, Three Phase = 3Φ, Six Phase = 6Φ) 203.26.73.3 (talk) 05:08, 27 February 2019 (UTC)[reply]

Already in the article - "The number of phases in a power system in electrical engineering, for example 1Φ for single phase, 3Φ for three phase." ‑‑ElHef (Meep?) 15:42, 27 February 2019 (UTC)[reply]

@@ Line 21: / Line 21: @@
 See more here:  https://en.wikipedia.org/wiki/Grain_size
-== Semi-protected edit request on 8 October 2016 ==
-{{edit semi-protected|Phi|answered=yes}}
-To add to existing list ending with line:
-"In lexical-functional grammar, the function that maps elements from the c-structure to the f-structure."
-The symbol for Relative Humidity
-<ref>https://en.wikipedia.org/wiki/Relative_humidity</ref>
-<ref>http://www.engineeringtoolbox.com/specific-relative-humidity-air-d_688.html</ref>
-[[Special:Contributions/92.251.24.209|92.251.24.209]] ([[User talk:92.251.24.209|talk]]) 12:03, 8 October 2016 (UTC)
-{{reflist-talk}}
-:Looks like the entry is there. — [[User:Andy M. Wang|'''''Andy W.''''']] ([[User talk:Andy M. Wang|<span style="color:#164">talk</span>]]) 00:22, 13 October 2016 (UTC)
 == Meaning in AI? ==