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The Berne Convention (formally, the International Convention respecting the Prohibition of the Use of White (Yellow) Phosphorus in the Manufacture of Matches (French: Convention internationale sur l'interdiction de l'emploi du phosphore blanc (jaune) dans l'industrie des allumettes)) of 1906 is a multilateral treaty negotiated in Berne, Switzerland, which prohibits the use of white phosphorus ...
Phosphorus is an essential macromineral for plants, which is studied extensively in edaphology to understand plant uptake from soil systems. Phosphorus is a limiting factor in many ecosystems; that is, the scarcity of phosphorus limits the rate of organism growth.
Phosphorus must have been awe-inspiring to an alchemist: it was a product of man, and seeming to glow with a "life force" that did not diminish over time (and did not need re-exposure to light like the previously discovered Bologna Stone). Brand kept his discovery secret, as alchemists of the time did, and worked with the phosphorus trying ...
The post This Is What People Used Before Toilet Paper Existed appeared first on Reader's Digest. Now it's left us wondering—what did people do without it in the first place?
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A major factor contributing to the death of feudalism in most of Europe was the Black Death of 1347–1351 and subsequent epidemics which killed one-third or more of the people of Europe. In the aftermath of the Black Death, land was abundant and labor was scarce and the rigid relationships among farmers, the church, and the nobility changed ...
Other European and North American fertilizer companies developed their market share, forcing the English pioneer companies to merge, becoming Fisons, Packard, and Prentice Ltd. in 1929. [ citation needed ] Together they produced 85,000 tons of superphosphate/year in 1934 from their new factory and deep-water docks in Ipswich .
The word winter comes from an old Germanic word for “time of water,” a reference to the heavy rain and snow this time of year, according to the Encyclopedia Britannica.