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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.
Jewel case, Jewel box or Super Jewel Box, types of Optical disc packaging Tomb of I'timād-ud-Daulah , at Agra is known as Jewel Box for its intricate parchin kari work Topics referred to by the same term
The amalgam was scraped off and the gold then separated from the amalgam by heating and evaporating the mercury, which was then recovered by a condenser for reapplication to the plates. Where stamp mills were used to crush gold-bearing ore to fines, a part of the extraction process involved the use of mercury-wetted copper plates, over which ...
An Italian jewelry casket, 1857, carved walnut, lined with red velvet. A casket [1] is a decorative box or container that is usually smaller than a chest and is typically decorated. In recent centuries they are often used as boxes for jewelry, but in earlier periods they were also used for keeping important documents and many other purposes. [2]
The reaction that occurs at the surface of the amalgam may actually be a hydrogenation rather than a reduction. The presence of water in the solution is reportedly necessary; the electron rich amalgam will oxidize aluminium and generate hydrogen gas from water, creating aluminium hydroxide (Al(OH) 3) and free mercury.
Soul cakes eaten during Halloween, All Saints' Day, and All Souls' Day A soul cake , also known as a soulmass-cake , is a small round cake with sweet spices, which resembles a shortbread biscuit. It is traditionally made for Halloween , All Saints' Day , and All Souls' Day to commemorate the dead in many Christian traditions.
It holds small tools for daily use such as folding scissors, bodkins, sewing needles (a needlecase), hairpins, tweezers, makeup pencils, etc. [6] Some étuis were also used to carry doctors' lancets. [7] These boxes were made of various materials such as wood, leather, ivory, silver, gold, tortoise shell, mother of pearl, and shagreen.
After six to eight weeks of mixing and soaking in the sun, a complex reaction converted the silver to native metal, which formed an amalgam with the mercury. The mixture was then washed and strained through a canvas bag before being placed into a hooded oven. [14] Heating this amalgam vaporized the mercury, leaving the silver. [15]