16:10 aspect ratio
A 16:10 display shows 16 units of width for every 10 units of height — 1.60:1 in decimal form. Content mastered for 16:9 will show bars or crop on this shape.
The productivity shape. 16:10 ruled laptops until roughly 2010, lost a decade to cheaper-to-cut 16:9 panels, then staged a comeback when premium laptop makers remembered that documents, spreadsheets, and code are taller than they are wide. The extra height over 16:9 is one toolbar or a dozen lines of code — small on paper, large in daily feel. 16:9 video letterboxes with slim bars.