Talk:Forbidden mechanism

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This article seems to contradict with Near infrared spectroscopy, which says that forbidden transitions are common enough to be used as a diagnostic method. --Tgr (talk) 10:36, 29 February 2008 (UTC)


 * I am not an expert, but it seems to me that Near infrared spectroscopy relies on using wavelengths of light that have greater penetration power because they correspond to forbidden transitions. In other words the transitions don't happen and that's why the wavelengths penetrate better. 69.248.200.36 (talk) 03:41, 5 June 2008 (UTC)


 * I am an expert. There is no contradiction. The comment immediately above is completely confused, ignore it. This article explicitly says (correctly) that forbidden lines are one of the most common forms of emission for the ultra-low density gas in interstellar space. Therefore, they can be and are used as diagnostics, as stated at Near infrared spectroscopy. I have therefore removed the "contradiction" tag. I will add a couple of lines to the text to explain how something can be simultaneously "improbable" and common...you just need to define your terms. PaddyLeahy (talk) 02:20, 26 June 2008 (UTC)

It also does not mention Phosphorus.

As mentioned on page: http://en.wikipedia.org/wiki/Phosphorus#Physical_properties

Phosphorescence is the slow decay of a metastable electronic state to a lower energy state through emission of light. The decay is slow because the transition from the excited to the lower state requires a spin flip, making it classically forbidden. —Preceding unsigned comment added by 32.177.224.217 (talk) 06:46, 16 November 2009 (UTC)

Understandability
This is more clear and explained it better to me than this Wikipedia article: https://www.britannica.com/science/forbidden-lines --User123o987name (talk) 02:20, 10 March 2020 (UTC)