MichaelLockwood

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I hope you enjoy editing here and being a Wikipedian! Please sign your messages on talk pages using four tildes (~~~~); this will automatically insert your username and the date. If you need help, check out Wikipedia:Questions, ask me on my talk page, or ask your question on this page and then place {{Help me}} before the question. Again, welcome! We're so glad you're here! Serten (talk) 18:58, 19 August 2014 (UTC)

August 2014

Hello, I'm BracketBot. I have automatically detected that your edit to Maunder Minimum may have broken the syntax by modifying 2 "[]"s. If you have, don't worry: just edit the page again to fix it. If I misunderstood what happened, or if you have any questions, you can leave a message on my operator's talk page.

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• and cold European winters has recently been made using the [[Central England Temperature]] record ]].<ref name="CET_PAPER">{{cite journal |author= Lockwood, M. et al. |title= Are cold winters in

It's OK to remove this message. Also, to stop receiving these messages, follow these opt-out instructions. Thanks, BracketBot (talk) 21:33, 19 August 2014 (UTC)

Koga cut crystals

Thanks, the omission of Koga's work has been a glaring hole for some time. Andy Dingley (talk) 12:14, 14 January 2015 (UTC)

Speedy deletion nomination of File:Issac Koga URSI medal and Portrait.jpg

A tag has been placed on File:Issac Koga URSI medal and Portrait.jpg requesting that it be speedily deleted from Wikipedia. This has been done under section F9 of the criteria for speedy deletion, because the image appears to be a blatant copyright infringement. For legal reasons, we cannot accept copyrighted images or text borrowed from other web sites or printed material, and as a consequence, your addition will most likely be deleted. Wikipedia takes copyright violations very seriously and persistent violators will be blocked from editing.

If you think this page should not be deleted for this reason, you may contest the nomination by visiting the page and clicking the button labelled "Click here to contest this speedy deletion". This will give you the opportunity to explain why you believe the page should not be deleted. However, be aware that once a page is tagged for speedy deletion, it may be removed without delay. Please do not remove the speedy deletion tag from the page yourself, but do not hesitate to add information in line with Wikipedia's policies and guidelines. Ronhjones  ^(Talk) 19:30, 1 February 2015 (UTC)

Apolgies - as I took the photograph of my Issac Koga medal (I won it in 1990), I thought it would be OK! I would thought that is a highly debatable rather than a blatant copyright infringement. It would be good if someone could add a photo of Issac Koga and the gold medal that is OK to use. MessageInABottle 20:51, 1 February 2015 (UTC)

A barnstar for you!

	The Writer's Barnstar
	For your contributions to the journal article on space hurricanes, and also for helping to improve its article on Wikipedia. Great job! LightandDark2000 🌀 (talk) 21:57, 5 March 2021 (UTC)

February 2022

Hi MichaelLockwood! I noticed that you recently marked an edit as minor at Magnetic reconnection that may not have been. "Minor edit" has a very specific definition on Wikipedia – it refers only to superficial edits that could never be the subject of a dispute, such as typo corrections or reverting obvious vandalism. Any edit that changes the meaning of an article is not a minor edit, even if it only concerns a single word. Please see Help:Minor edit for more information. Thank you. CoronalMassAffection (talk) 19:06, 27 February 2022 (UTC)

Thanks - my mistake. I think what happened was I made a change (that as you say was more than minor) that I then corrected a typo in and so only marked it a minor at that stage. Will watch out for that in future. I have made some more changes just now (which I have explained and not classed as minor) Mike - MessageInABottle 08:43, 28 February 2022 (UTC)

Managing a conflict of interest

Hello, MichaelLockwood. We welcome your contributions, but if you have an external relationship with the people, places or things you have written about on the page Mike Lockwood (physicist), you may have a conflict of interest (COI). Editors with a conflict of interest may be unduly influenced by their connection to the topic. See the conflict of interest guideline and FAQ for organizations for more information. We ask that you:

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In addition, you are required by the Wikimedia Foundation's terms of use to disclose your employer, client, and affiliation with respect to any contribution which forms all or part of work for which you receive, or expect to receive, compensation. See Wikipedia:Paid-contribution disclosure.

Also, editing for the purpose of advertising, publicising, or promoting anyone or anything is not permitted. Thank you. Victor Trevor (talk) 10:16, 2 March 2022 (UTC) Understood. It's just that the page was put up a few years back now and the publications count stated was out of date (it was then >300 and is now >400). I would never offer an opinion on a page I was conflicted on but I thought it would be OK to update a factual number that somebody else had put there. Nevertheless, I do get the point and next time I will point it out to another wikipedia editor and leave it up to them if they think it should be updated.

A barnstar for you!

	The Tireless Contributor Barnstar
	For your contributions to Magnetic reconnection, Alfvén's theorem, Sunspot, and Little Ice Age. Great work! CoronalMassAffection (talk) 16:35, 4 March 2022 (UTC)

thank you! Nice pages - I just did some tidying up.

License tagging for File:Dungey.png

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I think (hope) I have tagged this correctly for a cc-by-4 license. Please get back to me if this is not so.

New message

Hello. You have a new message at CoronalMassAffection's talk page. CoronalMassAffection (talk) 21:41, 9 July 2022 (UTC)

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Flux tube definition review request

Hello! We recently communicated on my talk page about frozen-in flux, and I was wondering if you could spare some time to take a look at the definition of a flux tube provided in Flux tube § Definition. It currently has no citations, and I have been unable to find a source that gives a similar definition. Furthermore, the definition utilizes the "boundary" of a "closed, orientable surface", which does not make sense to me, as a closed surface by definition has no boundary. Perhaps I am misunderstanding something here. I would like to get your thoughts on this if you are able. Thanks. CoronalMassAffection (talk) 05:28, 4 January 2023 (UTC)

Hi there, I'll look at the page in a moment. But first thoughts: the surface the definition refers to is like a hollow tube and is closed in that it is a surface that wraps around on itself in the 2 spatial dimensions perpendicular to the tube axis to form the tube. The key point is that magnetic field does not thread the surface (so the tube funnels out - i.e. grows in cross sectional area if the field lines diverge and funnel together if the converge. For me the key definition is that magnetic flux in a flux tube tube is conserved along the tube (which is a consequence of no field threading the tube surface and div(B) = 0): so $F = {\int}_A \vec{B}.\vec{da}$ is constant along a flux tube where $\vec{da}$ is an element of cross sectional area of the tube, $\vec{B}$ is the field in the tube, and the integral is over the cross sectional area of the tube, A.

(If B is uniform across the cross sectional area, this reduces to BA is constant).

Flux tubes can change in cross sectional area and can bend. However, when we add charged particles in a quasi-neutral magnetoplasma, the MHD force balance shows that there is a magnetic (Maxwell) pressure that acts perpendicular to B (of $B^2/(2{\mu}_o$) and a "tension" force that acts to straighten a bent flux tube. External pressures on the flux tube can stop it expanding in area and/or keep is bent but are needed to oppose the Maxwell pressure and the tension force. By the way, I dislike the universally used name "tension force" which comes from thinking of guitar strings that return to straight after plucking. The reason I don't like it is that the force of a bent flux tube vanishes once it is straight whereas the tension on a guitar string remains once it is straight. I always use the term "flux tube curvature force" - but I seem to be about the only one to worry about these semantics!

Because div(B) = 0, all flux tubes (if they have finite length) must, eventually, wrap itself around and its ends connect to form a torus (otherwise magnetic monopoles exist and they have never been definitively detected and if they do exist they are highly exotic for sure!). Hence the tube is either infinite in length or forms a closed torus (or magnetic monopoles do exist somewhere in the cosmos!)

Hope this helps. Needs a diagram really, but hopefully you can see what I am saying

Best regards MessageInABottle 11:19, 4 January 2023 (UTC)

OK - I have just looked at the page and it looks good to me. The definition part you point to is, however, very confusing. I would stress that, by definition, magnetic flux enters and leaves the tube only through its ends and not through its walls

Disputed non-free use rationale for File:Professor Mike Cruise portrait 01.jpg

Thank you for uploading File:Professor Mike Cruise portrait 01.jpg. However, there is a concern that the rationale provided for using this file on Wikipedia may not meet the criteria required by Wikipedia:Non-free content. This can be corrected by going to the file description page and adding or clarifying the reason why the file qualifies under this policy. Adding and completing one of the templates available from Wikipedia:Non-free use rationale guideline is an easy way to ensure that your file is in compliance with Wikipedia policy. Please be aware that a non-free use rationale is not the same as an image copyright tag; descriptions for files used under the non-free content policy require both a copyright tag and a non-free use rationale.

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The series of portraits was commissioned by IUG and STFC to be freely available - I just do not know for sure that they were given a CC-By licence, so did not feel I could click on that. I will contact the photographer (Max Alexander - he is a friend, and indeed I was one of the portraits in the series): and if they are not CC-By I will get his written permission to use this particular portrait of Mike Cruise on the RAS presidents website. If it has been removed by then, I will just upload it again. Thanks. 82.14.196.142 (talk) 18:26, 19 January 2023 (UTC)

Orphaned non-free image File:Professor Mike Cruise portrait 01.jpg

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Note that any non-free images not used in any articles will be deleted after seven days, as described in section F5 of the criteria for speedy deletion. Thank you. --B-bot (talk) 18:21, 22 January 2023 (UTC)

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