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Friday, August 7, 2015

Heliothermometer (updated September 4 2025) is now found on Wikipedia

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.    
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. 
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Image and conflicting information about altitude here

Not found on Wikipedia (Aug 7 2015)


Dec 25 2023, still not found on Wikipedia

September 4 2025 added a redirect to https://en.wikipedia.org/wiki/Actinometer

Friday, May 22, 2015

Maxwell–Lorentz electromagnetic theory

Or Maxwell's electromagnetic theory.  Not even on the article about Maxwell! The closet you will find is

His most notable achievement was to formulate the classical theory of electromagnetic radiation

But the article on electromagnetic radiation doesn't have it either!



Friday, April 24, 2015

Why the snows of Kilimanjaro decreased

Kilimanjaro snow loss due to deforestation, which is a form of human caused. climate change.  While the reason, decreasing humidity,  does appear, they essential reason is left out of the article.  As is the scientific study.

 It appears that decreasing specific humidity instead of temperature changes has caused the shrinkage of the plateau glaciers since the late 19th century.

The study, Kilimanjaro's vanishing ice due to tree-felling, as well as the information from it, is not found on Wikipdia.