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  2. Liver of sulfur - Wikipedia

    en.wikipedia.org/wiki/Liver_of_sulfur

    Liver of sulfur is mainly used in metalworking to form a brown or black patina on copper and silver as well as many (though not all) copper alloys and silver alloys (brass, for example— a copper alloy— does not react with sulfur compounds). It is sold as a yellow brittle solid (a "lump" which must be mixed with water before use) as well as ...

  3. Patina - Wikipedia

    en.wikipedia.org/wiki/Patina

    Patina (/ p ə ˈ t iː n ə / pə-TEE-nə or / ˈ p æ t ɪ n ə / PAT-ih-nə) is a thin layer that variously forms on the surface of copper, brass, bronze, and similar metals and metal alloys (tarnish produced by oxidation or other chemical processes), or certain stones [1] and wooden furniture (sheen produced by age, wear, and polishing), or ...

  4. List of alchemical substances - Wikipedia

    en.wikipedia.org/wiki/List_of_alchemical_substances

    Liver of sulfur – formed by fusing [clarification needed] potash and sulfur. Lunar caustic/ lapis infernalis – silver nitrate, formed by dissolving silver in aqua fortis and evaporating. Lye – potash in a water solution, formed by leaching wood ashes. Potash – potassium carbonate, formed by evaporating lye; also called salt of tartar. K ...

  5. Is gold a good substitute for cash in inflationary periods?

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    As we head further into a new year, gold is experiencing renewed interest and a strong price, with its performance being driven, in part, by investors wary of persistent inflation.In December, the ...

  6. The iron lung: A life-saving device with an enduring legacy - AOL

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    In the mid-20th century, community spaces like swimming pools and sporting events became a source of anxiety for parents who were frightened by the rampant spread of poliovirus.Their concerns ...

  7. Could milk, other calcium-rich foods help lower colorectal ...

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    “Other changes you can make to help reduce your risk of developing bowel cancer include eating plenty of fiber from whole grains, pulses, fruits, and vegetables, avoiding processed meat and ...

  8. Alchemical symbol - Wikipedia

    en.wikipedia.org/wiki/Alchemical_symbol

    Alchemical symbols were used to denote chemical elements and compounds, as well as alchemical apparatus and processes, until the 18th century. Although notation was partly standardized, style and symbol varied between alchemists.

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    Get this popular under-sink organizer for only $23 today. It comes with two height-adjustable organizers, each with two shelves that can keep your cleaning supplies neatly in place.

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