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Glossary

Hardness

Types of Hardness Measurements There are three main types of hardness measurements: scratch, indentation, and rebound. Scratch hardness measures the resistance to fracture or permanent plastic deformation due to friction....

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Handfasting

Definition and Historical Origins of Handfasting Handfasting is a traditional practice associated with Celtic and Anglo-Saxon peoples. It can refer to an unofficiated wedding, a betrothal, or a temporary marriage...

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Hair jewellery

Hairwork during the Victorian Period Hairwork flourished as a trade and private craft in mourning jewelry. Hairwork included lockets, rings, and bracelets with frames of loved ones' hair in braids,...

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Guild

Definition, Purpose, and Regulation of Guilds Guilds were associations of artisans and merchants who oversaw the practice of their craft/trade in a specific area. They were often granted letters patent...

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Grinding (abrasive cutting)

Grinding Processes Grinding is a type of abrasive machining process that uses a grinding wheel as a cutting tool. It can produce very fine finishes and accurate dimensions. Grinding is...

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Great Mogul Diamond

History of the Great Mogul Diamond The Great Mogul Diamond was gifted by Emir Jemla to Shah Jahan, the 5th Mughal emperor. It was described as unparalleled in size and...

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Gram

Definition and Origin of Gram The gram is a unit of measurement used to weigh objects. It is derived from the Latin word 'gramma' and the Greek word 'γράμμα'. The...

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Goldsmith

Characteristics and Properties of Gold Gold is malleable, ductile, rare, and has a yellow color. It can be melted, fused, and cast easily without oxide or gas issues. Gold is...

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Gold plating

Gold Plating Chemistry Alkaline gold cyanide for gold and gold alloy plating Neutral gold cyanide for high-purity plating Acid gold plating for bright hard gold and gold alloy plating Non-cyanide,...

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Gold

Characteristics and Properties of Gold Gold is a bright, slightly orange-yellow, dense, soft, malleable, and ductile metal. It is a transition metal and one of the noble metals. Gold is...

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Geometry

Definition, Importance, and Scope of Geometry Branch of mathematics concerned with properties of space Focuses on distance, shape, size, and relative position of figures One of the oldest branches of...

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Geology

Geological Material Majority of geological data comes from research on solid Earth materials Meteorites and other extraterrestrial natural materials are also studied Geologists study the mineralogical composition of rocks Geology...

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