Interesting subjects that actually exist, but do not have a Wikipedia article. And might never be found on Wikipedia. People, places and things. If it's patent nonsense, you won't find it here. Over time it's possible entries here might appear on Wikipedia. If you come across this most rare event, please let me know.
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Sunday, August 16, 2015
Proceedings and Report of the 1st-15th Annual Meeting
Proceedings and Report of the 1st-15th Annual Meeting
By American association of farmers' institute workers
An interesting bit of reading.
Friday, August 7, 2015
Heliothermometer (updated December 25 2023)
An insulated box with a thermometer inside, sunlight is allowed in through a window with three panes of clear glass, to measure sunlight, but not the outside air.
source
Image and conflicting information about altitude here
Not found on Wikipedia (Aug 7 2015)
Horace Bénédict de Saussure (1740-1799), a Swiss natural scientist, used Mariotte’s insight to design and build a “heliothermometer” to measure the relative intensity of sunlight. It was an insulated box with one side consisting of three layers of glass separated by air layers.source
source
Image and conflicting information about altitude here
Not found on Wikipedia (Aug 7 2015)
Dec 25 2023, still not found on Wikipedia