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International Prototype of the Kilogram: Measurement, Art & Standards

The International Prototype of the Kilogram (referred to by metrologists as the IPK or Le Grand K; sometimes called the ur-kilogram, or urkilogram, particularly by German-language authors writing in English:30) is an object whose mass was used to define the kilogram from 1889, when it replaced the Kilogramme des Archives, until 2019, when it was replaced…

Language: English [EN]
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International Prototype of the Kilogram topic overview

The analysis highlights Measurement, Art and Standards as prominent areas in the source structure around International Prototype of the Kilogram.

Related topics
133
Source areas
5
Connected nodes
138
Extracted relationships
4
Concept neighborhoods
19
Bridge connections
138

What this topic covers Research coverage

Source areas are shown by the number of related topics found in each part of the analysis. Use smaller areas too: they can reveal specialized angles and content gaps.

Copies of the IPK · 45 topics
Overview · 42 topics
Dependency of the SI on the IPK · 25 topics
Stability of the IPK · 16 topics
Creation · 5 topics

Smaller areas are not necessarily less important. They contain fewer connections in this analysis and can be useful for finding specialized angles or coverage gaps.

Explore all related topics Closing gaps

Browse the complete topic structure, not only the most central items. Less prominent entities and concepts can reveal missing angles, specialized context and useful research gaps. Each item opens a new analysis centered on that subject.

Overview

Creation

Copies of the IPK

Stability of the IPK

Dependency of the SI on the IPK

Advanced semantic analysis

Deeper signals for content research, entity SEO and topical coverage. The plain-language headings explain what each technical view is useful for.

How International Prototype of the Kilogram connects Entity context

See recurring relationship patterns around International Prototype of the Kilogram before inspecting the individual extracted relationships.

Important terminology

Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.

Important terminology

ipk mass kilogram si prototypes μg copies defined national stored used metre standards one units 10 bipm second verification replicas

International Prototype of the Kilogram relationships Subject–Predicate–Object triples

TTTA extracted 4 structured relationships around International Prototype of the Kilogram. Examples in this analysis include this → instance of → Quite unlike transient variations. The table shows each extracted connection, where it came from and its confidence.

SubjectPredicateObjectConfidenceSrc
thisinstance ofQuite unlike transient variations0.80text
the US's check standardinstance ofQuite unlike transient variations0.80text
K4instance ofQuite unlike transient variations0.80text
has persistently declined in mass relative to the IPKinstance ofQuite unlike transient variations0.80text

Related concept clusters Concept neighborhoods

The concept neighborhoods around International Prototype of the Kilogram bring nearby vocabulary together. In this analysis, examples include Ipk, National and Prototype. Use the clusters to find adjacent concepts and terminology that may deserve separate research.

  • International Prototype of the Kilogram
    • Ipk
    • National
    • Prototype
    • Mass
    • Replicas
    • Bipm's
    • Bipm
    • Used
    • One
    • Copies
    • Μg
    • Newton
  • international prototype of the kilogram
    • Ipk
    • One
    • National
    • Prototype
    • Mass
    • Replicas
    • Si
    • Bipm's
    • Bipm
    • Made
    • Practical
    • Used
  • kilogram
    • Ipk
    • One
    • Prototype
    • Mass
    • Replicas
    • Si
    • Made
    • Practical
    • Μg
    • Standards
    • Used
    • National
  • new definition of the kilogram
    • Ipk
    • One
    • Prototype
    • Mass
    • Replicas
    • Si
    • Made
    • Practical
    • Μg
    • Standards
    • Used
    • National
  • copies of the ipk
    • Mass
    • Kilogram
    • Bipm's
    • Official
    • Vault
    • Stored
    • Replicas
    • Μg
    • National
    • Standards
    • Used
    • Si
  • stability of the ipk
    • Mass
    • Kilogram
    • Replicas
    • Μg
    • Stored
    • Standards
    • Used
    • Si
    • National
    • Copies
    • Made
    • Years
  • dependency of the si on the ipk
    • Mass
    • Units
    • Defined
    • Unit
    • Kilogram
    • Metre
    • Replicas
    • Kg
    • Μg
    • One
    • Stored
    • Many
  • si base units
    • Units
    • Defined
    • Unit
    • Metre
    • Would
    • Kg
    • One
    • Many
    • Newton
    • Practical
    • National
    • Second

Connections between topic areas Semantic bridges

For International Prototype of the Kilogram, one of the stronger structural bridges in this analysis connects International Prototype of the Kilogram with Copies of the IPK. Bridges highlight paths between different parts of the map and can reveal research angles that are easy to miss in a flat list.

Min side: 3
International Prototype of the Kilogram — Copies of the IPK · splits 93 ⟂ 46
International Prototype of the Kilogram — Overview · splits 96 ⟂ 43
International Prototype of the Kilogram — Dependency of the SI on the IPK · splits 113 ⟂ 26
International Prototype of the Kilogram — Stability of the IPK · splits 122 ⟂ 17
International Prototype of the Kilogram — Creation · splits 133 ⟂ 6

Map overview Semantic statistics

International Prototype of the Kilogram

Nodes139
Edges138
Triples4
Avg. degree1.99
Density0.014388
Components1

Source & methodology

TTTA analyzes the structure around International Prototype of the Kilogram to surface related topics, entities, relationships, concept neighborhoods and bridge connections. Use the map to explore areas such as Measurement, Art & Standards, including less central topics that may reveal useful research gaps. Automatically extracted connections are research leads rather than rewritten encyclopedia content.

Source: Wikipedia — International Prototype of the Kilogram · EN edition · Analysis: TopicsToTalkAbout

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