Coffee has initially been a food – chewed, not sipped. Early African tribes consume coffee by grinding the berries together, adding some animal fat, and rolling the treats into tiny edible energy balls.
etalon (plural etalons)
An optical device containing parallel mirrors, used as a narrow band filter, often in laser design.
• Fabry-Pérot interferometer
• late on, lean-to, tolane
Source: Wiktionary
15 March 2025
(noun) the replacement of an edge or solid angle (as in cutting a gemstone) by a plane (especially by a plane that is equally inclined to the adjacent faces)
Coffee has initially been a food – chewed, not sipped. Early African tribes consume coffee by grinding the berries together, adding some animal fat, and rolling the treats into tiny edible energy balls.