Talk:John Dalton

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John Dalton[edit]

Article is terribly written.

some of it is, sentences like "John Dalton was born September 6, 1766 in Eaglesfield, Cumberland and received his early education from his father and from John Fletcher, a teacher of the Quaker school at Cumberland, on whose retirement in 1778 he himself started teaching."
If he was a techer before, how come he became a teacher after retirement? fwed66 20:50, 08 october 2006 (GMT)

I think it means that it was Fletcher who retired, and that Dalton took his place, but your right, it is kind of a bad sentence, because it's too long. I'm not sure what it's supposed to say, though, so I won't change it myself. - 69.166.72.148 23:03, 12 October 2006

I think you all are doing a very great job on this project. - Sai21 22:20, 6 March 2007

Edit request on 9 August 2013[edit]

Please change "and it was this which differentiated his theory from the historic speculations of the Greeks, such as Democritus and Lucretius." to "and it was this which differentiated his theory from the historic speculations of the Greeks, such as Democritus and Leucippus." Bebokkos (talk) 09:10, 9 August 2013 (UTC)

I see your point -- Lucretius was not Greek, but Roman -- so yes, this needs to be changed. However, Lucretius was simply expressing in Latin many ideas of the Greek atomist Epicurus, who lived a century or more after Democritus and Leucippus. Perhaps it would be better to write "... Democritus, Leucippus, and Epicurus."

Not done: I would make the amended change, but that section is already tagged as needing a citation for this claim. Can you provide a reliable source for the thought? Thanks, Celestra (talk) 20:48, 4 September 2013 (UTC) He pictured Atom as tiny,SOLID Sphere.......... And you can see it if you will study hard like me.... — Preceding unsigned comment added by 49.147.161.79 (talk) 13:39, 11 November 2013 (UTC)

DEPICTIONS OF CONTEMPORARIES[edit]

This article now has nine depictions: five of Dalton, four of contemporaries. It's my opinion the four contemporaries should be deleted - they can be seen by hyperlink at their own pages. Unless their are objections posted here, I will proceed with deleting them. IiKkEe (talk) 22:27, 17 January 2015 (UTC)

Agree. Martinevans123 (talk) 22:33, 17 January 2015 (UTC)

A paragraph that bothers me in John_Dalton#Atomic_theory[edit]

I am trying to write an open-source quiz for the PBS NOVA episode "Hunting the elements" and want to include some questions regarding the atomic theory. (See for this quiz I wrote for Chasing Pluto). I know a lot less about Chemistry than about Astronomy, so I needed to do some research, and that is what brought me here. The following paragraph from John_Dalton#Atomic_theory bothers me:

It has been proposed that this theory was suggested to him either by researches on ethylene (olefiant gas) and methane (carburetted hydrogen) or by analysis of nitrous oxide (protoxide of azote) and nitrogen dioxide (deutoxide of azote) .... However, a study of Dalton's own laboratory notebooks...concluded that so far from Dalton being led by his search for an explanation of the law of multiple proportions to the idea that chemical combination consists in the aof atoms of definite and characteristic weight...
copyvio?

This seems to imply that the arguments based on ethylene and methane gases did NOT involve the "interaction of atoms of definite and characteristic weight". If this is true, then I presume he used the volumes of the gasses and not just the weights. If this presumption is true, then that should be stated in the paragraph, and a reference needs to be provided. As it stands, the words that follow the text it has been proposed... seems to be an unsupported statement. Confirmation of my suspicion that volume played a factor comes from page 483 of this reference:

https://books.google.com/books?id=u61cAAAAcAAJ&pg=PA483&dq=Thomas+Thomson+element+of+chemistry+100+azotic+gas&hl=en&sa=X&ved=0CCcQ6AEwAGoVChMIjIqbv-aFxwIVTIoNCh12agC-#v=onepage&q=Thomas%20Thomson%20element%20of%20chemistry%20100%20azotic%20gas&f=false

If nobody responds to this in a few days, I will go ahead and edit the section myself and add the aforementioned link--Guy vandegrift (talk) 17:30, 31 July 2015 (UTC)

I added an image from the Link in Google books and am waiting to hear if this is copyvio. The image would proabably not be used in this article (perhaps Atomic_theory#Dalton?). Instead a brief sentence (or less) should suffice.--Guy vandegrift (talk) 18:43, 31 July 2015 (UTC)

External links modified[edit]

Hello fellow Wikipedians,

I have just added archive links to one external link on John Dalton. Please take a moment to review my edit. If necessary, add {{cbignore}} after the link to keep me from modifying it. Alternatively, you can add {{nobots|deny=InternetArchiveBot}} to keep me off the page altogether. I made the following changes:

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N Archived sources still need to be checked

Cheers. —cyberbot IITalk to my owner:Online 04:46, 28 August 2015 (UTC)