NIST Atomic Spectra Database

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Spectral lines and atomic energy-level reference data

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SI Score: 60/100
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physics spectroscopy atomic-data

Ask SI about NIST Atomic Spectra Database

Answers use saved listing facts and recorded sources.

What it does

The NIST Atomic Spectra Database provides selectable spectroscopic data organized by wavelengths and energy levels.

Choose the spectral-line or energy-level view according to the quantity you need. The reference includes version and citation information, so preserve those details with a lookup. That keeps a measurement comparison tied to the same database release rather than an unspecified table.

Sources

Atomic Spectra Database | NIST (Oct 26, 2026)

SI Score

60/100

#105 in Reference

Based on published information. No hands-on task test.

Method 2.0 · Published source review Assessed Oct 26, 2026Score ceiling for this evidence: 84/100.

Product usefulness 60

Evidence

Selecting a spectral quantity and preserving database version supports a specific atomic-data lookup workflow.

Limits: AI review of saved source passages. No hands-on test, human approval or automatic-provider checker receipt.

Source links and check dates are in Sources and checks below.

Separate website checks

These checks do not add points to the SI Score. They inspect the website's HTML, not the product in use.

Basic website checksunknown

No check recorded.

HTML accessibility checksunknown

No check recorded.

Homepage HTML responseunknown

No check recorded.

Trackers in homepage HTMLunknown

No check recorded.

Page date hintsunknown

No check recorded.

Policy links do not verify a company's conduct. An HTML response time is not application speed. Tracker and accessibility checks miss behavior after page load. Copyright dates do not prove product upkeep.

How the SI Score works →

Unconfirmed details may be unassessed, absent from the pages checked or temporarily unreadable. A missing price does not mean the service is free.

Sources and checks

Supporting pages for product usefulness, site facts, prices and separate website checks. Each record keeps its own date. Reading a page does not establish how well the product performs in use.

www.nist.gov/pml/atomic-spectra-database
- Product usefulness evidenceChecked Oct 26, 2026

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