Talk:Zeeman effect

message: Why do levels d,e,f in the first diagram become d,f,g in the second diagram?  Is this what the writer intended, or just a typo? -- Heron
:It was a typo, now fixed. -- Tim Starling 06:09 Apr 11, 2003 (UTC)
Is there a mathematical discription of the Zeeman effect on Wikipedia yet? Something along the lines of: a hydrogen atom in the presense of a 1 1 T magnetic field will have its various energy states shifted by x amount for quantum numbers of n=_, l=_, m=_, etc.
-A. O.
It might be worth mentioning that the split Zeeman lines are also polarised - the pi bands are polarised parallel to the magnetic field direction, and the sigma bands are at right angles to the field.  Steve Morton.
I'd like to see that too. Pulu (talk) 05:26, 12 December 2009 (UTC)
thread_title: Untitled

message: What is described in the strong case should be named "normal Zeeman", not Paschen Back.  This one should include the spin orbit as a pertubation.  Let me know if I'm wrong.
:The strong-field Zeeman effect is also known as the Paschen-Back effect, according to Griffiths, "Introduction to Quantum Mechanics", footnote on p.279 of the 2nd edition.  Indeed the spin-orbit correction is still there as a perturbation. HEL 21:13, 29 November 2006 (UTC)
replies: text: Reading "Experiments in Modern Physics" by Melissanos, (a rather old book from the 50s) one gets the feeling that the "Paschen-Back effect" refers to (or at least, used to refer to) something more particular -  the fact that classically one expects only certain lines, "normal Zeeman lines" but at low fields, one observes more lines ("anomalous Zeeman lines"). But at high fields, (remarkably), the lines start to shift and merge towards the classical expectation. (see http://hyperphysics.phy-astr.gsu.edu/hbase/quantum/zeeman.html#c4), which Melissanos calls the Paschen-Back effect. I'm sorry this is a bit vague. Later I will try to add a bit about the history and the meaning of the terms "normal" and "anomolous", since those terms are still be thrown around today, even though the lines are now completely understood. Danski14(talk) 05:29, 9 February 2012 (UTC)
thread_title:  Not a Paschen-Back there 

message: Maybe [ze:mɑn], as it is reported here. —The preceding unsigned comment was added by 79.7.241.204 (talk) 09:07, 2 May 2007 (UTC)
thread_title:  IPA name 

message: It would be nice to see a little piece on the importance of measuring the Zeeman line splitting in the solar spectrum to measure magnetic field directions and intensities. I came here looking for more information and so I can not elucidate it better.  —Preceding unsigned comment added by 76.227.17.11 (talk) 04:54, 10 September 2008 (UTC)
thread_title:  Suggestion 

message: How about a nice picture?  I remember the undergrad lab, taking turns with my partner observing the split lines, which looked beautiful, but the darn magnet heated up so much and so fast we had to be very quick.  —Preceding unsigned comment added by 12.229.112.98 (talk) 21:48, 11 March 2010 (UTC)
thread_title:  Suggestion2 

message: http://www.chem.ufl.edu/~itl/4412_aa/zeem.html
Just granpa (talk) 07:52, 18 December 2010 (UTC)
replies: text: I am working on a laboratory report which will feature very nice picture of the splitting, (produced myself with MATLAB) similar to your last link, for Rb. Expect the picture soon, after I turn in my report. Danski14(talk) 05:22, 9 February 2012 (UTC)
thread_title:  Nice images at university of florida 

message: I corrected small mistake in the Breit-Rabi formula replacing A by hyperfine splitting \Delta W  in accordance with original paper of Breit and Rabi.  — Preceding unsigned comment added by Jora0 (talk • contribs) 07:09, 10 April 2012 (UTC)
thread_title:  Small correction for "Intermediate field for j = 1/2" 

message: Several companies, notably Perkin Elmer, make atomic absorption spectrometers and calling them "graphite furnaces". Most of these instruments I have came across carry the name "Zeeman atomic absorption" on them. Since I have never operated such an instrument, does the Zeeman effect have anything to do with these instruments? If so, one should somehow include this in the "Applications" section --173.178.17.48 (talk) 02:58, 29 May 2012 (UTC)
thread_title:  Does this have anything to do with "Zeeman atomic graphite furnaces"? 

message: It refers to levels 'a', 'b', 'c' etc. but does not say what those are. Somebody should write a better introduction. --avkulkarni  —Preceding undated comment added 08:11, 27 September 2012 (UTC)
thread_title:  The introduction makes no sense 

message: This article currently seems made for mathematicians only. It pretty doesn't explain to common mortals what the Zeeman effect
is, maybe also using an illustrating sketch. It starts as one already knew of the effect giving only quantitative formulas and
no qualitative descriptions. What said is intended to be a constructive criticism to improve understandability of the article.  — Preceding unsigned comment added by 87.8.122.48 (talk) 14:06, 12 January 2014 (UTC)
thread_title:  Unclear article 

message: Under »Theoretical presentation«, the total electronic angular momentum \vec{J} is implicitly given as g_l\vec{L} + g_s\vec{S}. Together with the preceding formula \vec{\mu} = -\frac{\mu_B g \vec{J}}{\hbar}, this gives the correct expression \vec{\mu} = -\frac{\mu_B (g_l \vec{L} + g_s \vec{S})}{\hbar}, for the magnetic moment of the electron. However, it is usually the fact that \vec J = \vec L + \vec S, which is also used under »Weak field (Zeeman effect)«. So, one of the J's must be wrong, and I suspect it's the first one. I don't know what led to its inclusion, but I think the magnetic moment should directly be presented in the final form, \vec{\mu} = -\frac{\mu_B (g_l \vec{L} + g_s \vec{S})}{\hbar}. Please correct me and elucidate if I'm mistaken! --Xjs. (talk) 20:09, 19 July 2014 (UTC)
thread_title:  J = L+S or J = g_l L + g_s S? 

message: There is two issues with the diagram showing the magnetic field induced shifts for 87Rb:
* The y-Axis is wrong by a factor of 10000. The field-free hyerpfine-splitting of the groundstate it 6.834 GHz in 87Rb. In the diagram it reads as 0.68MHz. 
* The high-field quantum numbers in the diagram should read "m_J" and "m_I" rather than "m_F" and "m_I". This is the essence of the Paschen-Back Regime: hyerpfine coupling breaks open and F,m_F seize to be good quantum numbers. ^SaerdnA (talk) 14:36, 9 October 2014 (UTC)
replies: text: Thanks... the y-axis is actually OK, because if you look at the top of the axis it says the values are multiplied by 10^4. Sorry if that is unclear. I think you are right about your second point though, I will try to fix it soon. Danski14(talk) 00:55, 24 October 2014 (UTC)
thread_title:  Figure 

message: No history, experiments, or dates ! 
From Zeeman article:
:In 1896, three years after submitting his thesis on the Kerr effect, he disobeyed the direct orders of his supervisor and used laboratory equipment to measure the splitting of spectral lines by a strong magnetic field. He was fired for his efforts, but he was later vindicated: he won the 1902 Nobel Prize in Physics for the discovery of what has now become known as the Zeeman effect. As an extension of his thesis research, he began investigating the effect of magnetic fields on a light source. He discovered that a spectral line is split into several components in the presence of a magnetic field. Lorentz first heard about Zeeman's observations on Saturday 31 October 1896 at the meeting of the Royal Netherlands Academy of Arts and Sciences in Amsterdam, where these results were communicated by Kamerlingh Onnes. The next Monday, Lorentz called Zeeman into his office and presented him with an explanation of his observations, based on Lorentz's theory of electromagnetic radiation.
178.38.125.245 (talk) 00:59, 23 April 2015 (UTC)
thread_title:  Bizarre flaw in article 

message: Substituted at 11:14, 30 April 2016 (UTC)
thread_title: Assessment comment

message: I added
* Youtube video of demonstration of the Zeeman Effect
It was removed due to 'wp:ELNO item #11: "Blogs, personal web pages and most fansites (negative ones included), except those written by a recognized authority. ")'.
The thing is, in my opinion it isn't a blog/personal website/fansite.  It's a video of a demonstration of the Zeeman effect.  It looks useful to me.  Is consensus that this link should not be added? RJFJR (talk) 14:45, 20 July 2018 (UTC)
replies: text: It was made by someone who is not a recognized authority, so i.m.o. it clearly qualifies as a schoolbook example of item #11. - DVdm (talk) 16:09, 20 July 2018 (UTC)
thread_title:  Discussing possible External Link 

message: I will add a section detailing the n=2 to n=1 transitions in the presence of the strong field. I also find the lyman alpha transition descriptions quite confusing in the weak field and I will fix this.  Landmark ni (talk) 04:14, 12 December 2018 (UTC)
thread_title:  Lyman alpha transitions in Strong Field 

message: The numbers in the image correspond perfectly to:
:
 	   	    	    	  	
 	   	    	    	  	
5	1.5	1.5 	+0.5	2 	2
5	1.5	0.5 	+0.5	1 	2
5	1.5	−0.5	+0.5	0 	2
5	1.5	-1.5	+0.5	-1	2
5	1.5	-1.5	−0.5	−2	2
5	1.5	-0.5	−0.5	-1	1
5	1.5	0.5 	−0.5	0 	1
5	1.5	1.5 	−0.5	1 	1
Just granpa (talk) 20:20, 16 September 2021 (UTC)
replies: text: Sorry, but this is wrong.  (the orbital number), as well as its projection m, are always integer... The figure is for the hyperfine structure, the fine-structure approximation becomes valid at the high (in this scale) field, near the right end of the figure. Evgeny (talk) 09:13, 19 September 2021 (UTC)
thread_title:  Quantum numbers 

message: This book available online has two great short sections on the Zeeman effect:
* Leighton, Robert B., and Robert B. Leighton. Principles of modern physics. Vol. 795. New York: McGraw-Hill, 1959.
Johnjbarton (talk) 16:38, 29 February 2024 (UTC)
thread_title:  Another good reference. 

message: I removed some of the tags on the Zeeman demo videos on the grounds that they are reliable for content they reference, that is the construction of a demo. I think the video is clearly not faked and I take the extensive comments on the videos as a kind of evidence.
The tags on the explanation remain. Johnjbarton (talk) 17:04, 1 March 2024 (UTC)
thread_title:  Zeeman demo references 

message: IMO, it deserves a separate article or at least a dedicated section here. Evgeny (talk) 12:35, 4 March 2024 (UTC)
thread_title:  Nuclear Zeeman effect