Inok Nikolai
Many thanks. I do, however, distinctly remember seeing an extract from Alexei's diary a good few years ago, where he went swimming and gave the water temperature. The commentary made it clear thar reaumur was meant, and this has stuck in my head because it was the first time I had ever heard of it.
Ann
Well, yes. But in this instance, we are both correct:
Tsarevich Alexis did indeed record the temperature in Réaumur, and he also noted that fact in writing.
It is an excerpt from his diary entry for July 31 / August 13, 1917 — the Imperial family’s last day in Tsarskoe Selo before departing for Tobolsk. A photograph of that page of his diary appeared in N. Sokolov’s official investigation into their murders, and it has been reproduced many times since.
Tsarevich Alexis Nicholaevich wrote: «Днемъ купался. Въ воде 18° Р.»
“In the afternoon I went swimming. In water 18° R.”
And the commentators explain that the letter “R.” here stands for Réaumur.
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In order to share more information on this whole topic of temperatures, I am going to open a new thread "Temperature Scales in NAOTMAA’s Letters and Diaries” under the board “Their World and Culture”, q.v.
Inok Nikolai