Mathematics and Logic · Systems and Thinking
Units, Frames, and Uncertainty
A numerical value needs context before it can be interpreted. That context includes what the number represents, how it is expressed, any coordinate and time information that applies, and the uncertainty or limitation that qualifies it. Naming this context does not establish how the result was obtained. It also does not establish that the result is accurate, historically correct, scientifically valid, or approved.
Sources & review
Evidence and review
How Atlas supports this record.
Atlas uses original Kinesema wording. These public sources support narrow parts of the record; they are not endorsements or proof of claims outside the roles shown below.
- Review
- Human reviewed
- AI assistance
- Yes—human reviewed
- Last reviewed
- 2026-08-17
The International System of Units (SI Brochure), 9th edition, version 4.01
Bureau International des Poids et Mesures
- Used here for
- The scoped roles of quantity values, numbers, units, dimensions, and angle-unit context when expressing and interpreting numerical values.
- Source use
- Paraphrased from source
- Source type
- official BIPM publication and authoritative SI reference; ninth edition published 2019; version 4.01
International Vocabulary of Metrology — Basic and General Concepts and Associated Terms (VIM), 3rd edition, JCGM 200:2012
Joint Committee for Guides in Metrology
- Used here for
- Scoped distinctions among quantity, quantity value, numerical value, measurement unit, dimension, quantity-value scale, conversion, and measurement-uncertainty roles.
- Source use
- Paraphrased from source
- Source type
- official international metrology vocabulary; third edition; corrected 2012 publication
OGC Abstract Specification Topic 2: Referencing by coordinates (Including corrigendum 1 and corrigendum 2), OGC 18-005r8, version 6.0.8
Open Geospatial Consortium
- Used here for
- Within its OGC and ISO 19111 scope, distinctions among coordinate systems, coordinate reference systems, datums and reference frames, coordinate operations, coordinate conversions, coordinate transformations, dynamic reference frames, coordinate epochs, and relevant frame-reference, datum-anchor, transformation-reference, and parameter-reference epoch roles.
- Source use
- Paraphrased from source
- Source type
- official OGC publicly available standard and Abstract Specification; exact document 18-005r8, version 6.0.8
This is a concise first-release record, not a complete course. Examples, terminology, and reviewed connections can grow through later public projections.
Follow the structure
Connected concepts
These are reviewed Atlas relationships, not suggestions inferred from page order or visual proximity. Open a boundary only when you want the extra detail.
Connected from
Kinematics and Motion
A motion description needs units, frames, timing, conventions, and limitations so positions, orientations, velocities, and constraints can be interpreted consistently.
Connection boundary
Complete context can make a motion record inspectable, but it does not prove accuracy, physical realism, safety, accessibility, or approval.
Connected from
Provenance and Sources
Provenance can preserve which quantities, units, coordinate and time context, methods, and limitations accompanied a numerical result.
Connection boundary
Recording that context explains how to interpret the result; it does not prove the result accurate, valid, observed, or approved.
Connected from
Vectors and Coordinate Frames
Vector components need units, coordinate representation, frame, and applicable time where relevant before their values can be interpreted or compared.
Connection boundary
Naming that context does not validate the vector, select the correct transformation, or establish measurement accuracy.