Talk:Magnetotactic bacteria

message: I have just started translating this article from the Italian (following a request from an english language wikipedian on the it.wiki Bar).  The full working draft is here: User:Pippu d'angelo/Magnetotactic bacteria - please feel free to come along a lend a hand - I just thought I would leave a stub here until we had it finished because it could take a while and I don't know diddly squat about this stuff!!  ρ¡ρρµ δ→θ∑ - (waarom? jus'b'coz!) 01:48, 11 December 2005 (UTC)
thread_title: Translation from Italian

message: The Bellini reference is extremely obscure; after a student in one of my classes cited Bellini as the discoverer of magnetotactic bacteria, I tracked it down and updated the introduction accordingly.
The references in this article are a mess; they should probably be updated to use the Wikipedia footnote/citation system.
I don't have time to update the main body of the article, but there are numerous places where the writing is obscure enough to be inaccurate. Bobkopp 16:11, 17 June 2006 (UTC)
replies: text: Updated references to use the footnote/citation system. Berserker79 10:32, 19 June 2006 (UTC)
thread_title: References

message: I noticed the article contradicts itself regarding the remanence of the magnetic field in the magnetosomes.  In the last sentence of the first paragraph under the Magnetism heading, it says the magnetosomes are large enough to have a permanent magnetic field.  However, under the Biotechnology Applications heading, it claims the particles are purely superparamagnetic and thus no remanent fields.  I know enough to know that these statements contradict, but unfortunately I don't know the answer!  My basic knowledge of magnetism tells me that the chain-like structures of the magnetosomes do preclude the necessity for the particles to have a remanent field, because the chain will align with an external field to minimize energy without remanence (and if the particles can hold remanence, it raises the question of whether this feature is used by the living organism and how they get aligned in the first place).  My other understanding, however, is that there isn't an exact transition between superparamagnetic and not -- the remanence in these particles can in many cases exist, but just be very weak and in most practical cases still be called "superparamagnetic".  
I think the article needs to be further checked for accuracy -- it's pretty dense and has a lot of details that may not be accurate. —The preceding unsigned comment was added by Femtoamy (talk • contribs) .
:I don't know the answer either, but I put  on the article so hopefully someone will come along who does. —Keenan Pepper 01:31, 25 July 2006 (UTC)
replies: text: I don't remember if I wrote this section, but the sentence saying that magnetosomes are large enough to have a permanent magnetic is not technically correct. Magnetosomes are large enough to have their own magnetic field but size has little to do with changes in polarity in this case. I fixed it. --Lejean2000 14:14, 25 July 2006 (UTC)

text: Magnetosome crystals are single domain, which means they are larger than superparamagnetic crystals. Bobkopp 03:52, 4 August 2006 (UTC)
replies: text: Strictly speaking, not all magnetosome crystals are large enough to be single domain by themselves. Some need the chain to keep them aligned. RockMagnetist (talk) 15:39, 2 September 2010 (UTC)
thread_title:  Magnetic properties of magnetosomes contradicts itself in article 

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