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3 results for “Lost-wax casting” in Science
Science · 9 August 2026
The Metallurgy of Karat
…ass is not gold, and that quarter is engineered. It sets hardness, colour, melting range, casting behaviour, response to polishing and resistance to tarnish. Change it and you change everything about how the metal behaves on the bench, even though the assay result stays identical…
Tomas Herrera · 16 min read
Science · 8 August 2026
The Metal That Went Medical
Divide gold finely enough and it stops being gold-coloured, stops being inert in the way you expect, and starts doing work in places no bullion bar could reach — including the test strip that told you…
Amara Okonjo · 15 min read
Science · 10 August 2026
Where Gold Actually Comes From
Every gram of gold on Earth was manufactured in an astrophysical catastrophe, arrived here after the planet had already formed, and was then concentrated by hot water. Three separate accidents, none o…
Tomas Herrera · 18 min read
