A nomogram is a graphical calculating device consisting of a set of parallel scales, each representing a variable in an equation, arranged so that a straight line drawn across known values on two or more scales intersects the solution on the remaining scale(s). It converts mathematical computation into a physical alignment task, enabling rapid calculation without arithmetic. The device persists as a printed or drawn diagram, maintained as a reference artifact in engineering, navigation, medicine, and education. [formal: nomogram | substrate: mind | horizon: a moment | explicit: yes | epoch: 0.01]
Accepted ontology entry
nomogram
A nomogram is a graphical calculating device consisting of a set of parallel scales, each representing a variable in an equation, arranged so that a straight line drawn across known values on two or more scales intersects the solution on t…
Definition
Why it is in scope
A nomogram is a human-made graphical calculating device: a diagram of parallel scales representing functions of one or more variables, arranged so that a straightedge drawn across values on some scales intersects the solution on another scale. It extends human computation into a physical, reusable artifact that persists across time independent of any single user's memory.
Names and aliases
- nomogramen · CANONICAL
Relations from this entry
- cmrg4vstb00kx2a1nar61eoe7DEPENDS_ON →
nomogram DEPENDS_ON mathematics: remove mathematics from a nomogram and it stops operating as a calculation device — the aligned scales, logarithmic relationships, and functional mappings are pure mathematical constructs. The which-came-first test: the mathematical relationship must exist for the nomogram to function at all.
- cmrwmvmth00ndsoac67lsf03cDEPENDS_ON →
A nomogram is a graphical calculating device whose curves are constructed by interpolation between known reference values. Remove interpolation method — the curves cannot be constructed, and the nomogram stops operating. Removal test passes: X stops OPERATING without Y.
- cmrwnrieo00qrsoacvm1msqk2INSTANCE_OF →
A nomogram is a specific type of diagram: a graphical calculating device. A competent speaker would call a nomogram 'a diagram' — it uses visual marks to depict mathematical relationships. Specific→general INSTANCE_OF direction.
Relations to this entry
No accepted relations in this direction.
Record identity
- Created
- Jul 22, 2026, 9:44 PM UTC
- Content hash
- 0045a96850ec9569678a63be845df4e095f85b3f34d427f14ba886c94d9021ad