Talk:Joseph Black

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Errors[edit]

He discovered 'fixed air'. We know he was not the first from Jan_Baptist_van_Helmont and from Carbon_dioxide. Did he 're-discover' or merely 'study' fixed air? Acuster 03:46, 4 May 2005 (UTC)

Actual date of death?[edit]

Biography page at University of Glascow says Dec 6, 1799

Britannica says Nov 10, 1799

Clemwang 17:40, 21 March 2007 (UTC)

"Curiously, the early authorities on Black's life are mistaken about hte date of his death, variously given as November 26 and November 10. But a letter from Robison to James Watt settles the point: Black died on December 6, 1799, in his seventy-second year." - Henry Guerlac; Essays and Papers in the History of Science, page 289. - StevenBell (talk) 21:17, 8 March 2008 (UTC)

Reverted to previous version[edit]

The last update (by an IP with several warnings already) was apparently copied directly from this source, including typos. Therefore, while the text of the original encyclopedia appears to fall within fair use, redistribution of the published content is prohibited at the publishing site under section 5 and I felt that reversion was appropriate. NOTE that the date was changed from 1746 to 1744 by the same user, which I did NOT revert, as I am new to this process, was not able to verify it as accurate, and am yielding to editors with more experience. - Wickertu 18:43, 21 March 2007 (UTC)

Miscellaneous[edit]

Joseph Black awards - Preceding unsigned comment added by 151.196.32.51 (talk) 17:30, 19 October 2007 (UTC)

Does anyone have Black-related pictures that could be added to this article? Perhaps drawings or photographs of some of Black's scientific equipment? - Astrochemist (talk) 23:21, 8 March 2008 (UTC)

Latent heat[edit]

The article said"In 1761 Black deduced that the application of heat to ice does not cause its immediate liquefaction, rather the ice absorbed the heat without a rise in temperature.[3] Additionally, Black observed that the application of heat to boiling water does not result in immediate evaporation. "

Contrary to the article before my edit, adding heat to ice, at say, -10 C, increases its temperature; ice has a specific heat. It is only at the melting point that adding heat to an ice/water mixture that at first no temperature rise is detected, only once all the ice is melted. The error in the wording of the steam/water system is similar. DonSiano (talk) 15:10, 8 March 2010 (UTC)