the.com/smelting
Fire tricking rock into confessing it was secretly metal all along.
means The process of applying intense heat (and often a chemical reducing agent) to ore so the metal separates out from the rock and impurities surrounding it.
from From Middle Low German/Middle Dutch 'smelten,' meaning to melt, which English borrowed in the 1500s specifically for the ore-refining trade. It's a cousin of 'melt' and 'smolder' — all tracing back to a Germanic root tangled up with heat and the slow transformation of solid things into liquid or vapor.
- key trick
- carbon steals oxygen from metal oxides
- ancient roots
- humans smelted copper 7000 years ago
- byproduct
- slag, the waste rock, floats off separately
- civilization shift
- iron smelting literally named an entire age