Atomic Spectra Viewer
Observed emission lines from the NIST Atomic Spectra Database — 143,786 lines across 549 species. Pick up to three elements; scroll to zoom, drag to pan, double-click to reset.
DATA CAVEATS
Wavelengths are passed through from a legacy ASD scrape; its air/vacuum convention is unverified (ASD default: air ≥ 200 nm, vacuum below) — treat sub-pm comparisons accordingly. Relative intensities are per-species and source-condition-dependent: stick heights are log-normalized within each element band and are not comparable across species. Provenance: data manifest.
STAGES:
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Line finder
Search all 549 species for lines near a wavelength. First use fetches a ~2.3 MB index.
± nm