Talk:Particle number

Particle number 'Temperature dependent'?
Tha article has, in the opening section, The meaning of constituent particle, and thereby of particle number, is thus temperature-dependent. I don't think so!

Anybody agree? I propose to change it (soon). --Damorbel (talk) 16:08, 8 November 2012 (UTC)


 * The article is correct. That sentence is actually a very clever, not obvious at first glance, somewhat pedantic observation. I think what it is trying to say is something in these lines: if you get high enough temperatures, molecules and atoms will "break", for example, 1 molecule of water (H2O) will become 2 protons, 1 oxygen nucleus, and 10 electrons. You had 1 particle, now you have 13.
 * 177.138.210.163 (talk) 02:27, 25 March 2017 (UTC)

merge from Particle number operator
Both this and the Particle number operator are short stubby articles. They would work better if they were in one place. Err, I'm sort of changing my mind. This article talks about air quality, so dumping a bunch of nasty QM formulas into it would be a bad idea. All this suggests that Particle number operator should be renamed to Particle number (quantum mechanics) and given a proper lede. 67.198.37.16 (talk) 00:33, 5 December 2020 (UTC)

Science
Conetituent particle 27.61.77.146 (talk) 05:58, 30 March 2022 (UTC)

Particle number, the air quality metric, as a separate page?
Particle number (PN) is a metric used in air quality, which will get more relevant in the future in addition to PM2.5 and PM10. PN is a traceable metric according to ISO 27891:2015. I suggest to create new page for this metric. — Preceding unsigned comment added by Jsaturno (talk • contribs) 19:14, 6 August 2022 (UTC)