Schreger line
Schreger lines are visual artifacts that are evident in the cross-sections of ivory. They are commonly referred to as cross-hatchings, engine turnings, or stacked chevrons.
Schreger lines are visual artifacts that are evident in the cross-sections of ivory. They are commonly referred to as cross-hatchings, engine turnings, or stacked chevrons.
Schreger lines are visual artifacts that are evident in the cross-sections of ivory. They are commonly referred to as cross-hatchings, engine turnings, or stacked chevrons.
Source: Wikipedia "Schreger line" · CC BY-SA 4.0
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