Johan Wilcke

Johan WilckeIn existographies, Johan Wilcke (1732-1796) (CR:3) was a Swedish physicist and chemist, noted for []

In c.1775, Wilcke, supposedly, was doing some type of calorimetry work.

In 1782, Wilcke, in his “On the Snow's Cold at Melting”, is said to have calculated the latent heat of ice. [1]

Quotes | On
The following are quotes on Wilcke:

Wilcke had, in the course of his investigations into latent heat, searched for the cooling effect which melted ice would have, he thought, upon the ice-cold water in which it was floating. Such cooling, ‘necessitated’ by the latent heat required to melt the ice, would amount to a flow of heat from a cold body to a hot body (the melting of ice).”
Donald Cardwell (1971), From Watt to Clausius (pg. 251) (compare: Clausius) [2]

Wilcke also noticed and reported similar phenomena, as that of Black, at about the same time. Wilcke saw that the final temperature of a mixture of hot water and snow was less than the mean between the temperature of the snow and the temperature of the water. Black and Wilcke, however, did not profit financially from their observations; Watt did.”
— Cathy Cobb (1995), Creations of Fire (pg. 217)

1. Wilcke, Johan. (1772). “On the Snow's Cold at Melting” ("Om snöns kyla vid smältningen") (ΡΊ), Proceedings of the Royal Swedish Academy of Sciences (Kungliga Svenska Vetenskaps Akademiens Handlingar). 33: 97–120.
2. (a) McKie, Douglas and Heathcote, Niels. (1975). The Discovery of Specific and Latent Heats (Wilcke, pgs. 78, 92-93)) (GB). Arno Press.
(b) Cardwell, Donald S.L. (1971). From Watt to Clausius: the Rise of Thermodynamics in the Early Industrial Age (pg. 251). Cornell University Press.

Further reading
● Wilke, Johan. (1782). “On Specific Heat”, N. Abhandl. D. Schwed. Akad. D. Wiss. 2: 489.
● Dickinson, Hobert. (1915). Combustion Calorimetry (Wilke: author of the term “specific heat”, pg. 264). Government Printing Office.

External links
● Johan Wilcke – Wikipedia.

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