COVERAGE & REVIEW STATUS
Know what is here.
An inventory of the content and reference information included in this edition.
Collection overview
The current collection connects sourced histories, scientist biographies, applications and element profiles. Explanatory visuals and optional models support the reading. Automated checks remain distinct from independent scientific review and public release approval.
Editorial standards and accountability · Suggest a correction
- Reference collection
- 8 discovery histories, 20 scientist biographies and 24 application articles; 132 cited sources and 104 curated reading connections. Article text dates and source-check dates are shown separately. Offline content reviews are complete.
- New measured-data investigations
- 4 source-frozen studies. Each declares record identities, chemical or material form, conditions, units, processing, uncertainty and scoped claims. Builds check source hashes and numerical references. These checks do not replace independent scientific review.
- Corrections and review scope
- Source-to-claim dependencies identify affected studies when a source changes. Updated study content changes its revision. The new frozen-data gate does not retroactively certify the older collection.
- Element histories and applications
- 118 expanded profiles · AI source checks completed
- Application mechanisms
- 236 authored causal/evidence accounts · quantitative and schematic views state their own limits
- Scene explanations and checks
- Original scientific explanations and checks
- Spectroscopy
- Hydrogen line lessons use synthetic spectra. FIRAS and the new stellar investigation identify observed data, processing and model comparisons separately.
- Molecular coordinates
- RCSB PDB 1A3N / 1HHO and zinc-site 2CBA / 2CBE; selected atoms and alignment limits are declared
- Physical devices / screen readers
- Qualification not completed
- Learning evaluation
- Newcomer and educator sessions not run
- Public release
- Not approved
Coverage by element role (14 roles across 236 authored applications)
What each authored application asks its element to do. Counting by role alongside counting by realm shows where the atlas is thin: a catalog can look broad while every entry asks the same question of its material. This is an editorial classification of existing applications, not a property of the elements. Editorial classification of this atlas.
| Role | Applications | Distinct elements |
|---|---|---|
| unclassified | 44 | 39 |
| alloying addition | 33 | 29 |
| nuclear material | 26 | 21 |
| optical medium | 26 | 25 |
| measurable signature | 20 | 18 |
| activator | 15 | 12 |
| charge carrier | 15 | 13 |
| structural material | 15 | 15 |
| dopant | 12 | 11 |
| catalyst | 9 | 7 |
| reagent | 9 | 9 |
| magnetic material | 6 | 6 |
| cofactor | 3 | 3 |
| protective layer | 3 | 3 |
Coverage by element (0 of 118 elements are named only by their own profile)
Counts records outside an element’s own profile that name it through a structured field: application articles, discovery histories, scientist profiles, journey chapters, everyday entrances, application decisions, device material systems, discovery stories and realms. Element-to-element connections are counted separately. A zero is an authoring backlog item, not a missing fact.
0 elements have no record outside their profile; 40 have one or two. Of the uncovered, 0 are named by another element’s authored connection and now show that link on their own page.