Wooden Matches, Tillage Machines, Telescopic Gangways, Mabe Pearls
S27 E6 April 4, 2016 0h 21m
Source:
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Overview
Thin pieces of wood are cut, dried and coated with combustible compounds to produce matches. Heavy frames, discs and cultivating tools are assembled into agricultural tillage machines; nested structural sections and hydraulic systems create telescopic passenger gangways; and cultured half-pearls are grown against the inner surfaces of mollusc shells.