LUNTHRA

Catalog 003 — Spectra

Read by its light.

Hydrogen gives off four wavelengths and nothing else. That signature is how you find it nine billion light years away.

Balmer series · H I

656.3 · 486.1 · 434.0 · 410.2 nm

Pick what it is. Then what it’s about.

Two questions instead of thirty series names. Both are optional, and they combine.

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Vacuum / Hoodies

Before the symmetry breaks, the field rests at the centre; after, it rolls into the circular trough — and mass appears…

Vacuum / Wall art

Before the symmetry breaks, the field rests at the centre; after, it rolls into the circular trough — and mass appears…

Vacuum / Caps

Before the symmetry breaks, the field rests at the centre; after, it rolls into the circular trough — and mass appears…

Spectra / Tees

Lithium burns crimson. Two lines carry nearly all of it: 610.4 and 670.8 nanometres, the flame-test signature that…

Spectra / Tees

Copper turns flame blue-green. The lines cluster between 510 and 578 nanometres a narrow, cool band that separates it…

Spectra / Tees

One krypton line once defined the metre. From 1960 to 1983, a length of 1,650,763.73 wavelengths of its orange-red…

Spectra / Tees

Xenon is the flash you don't see coming. Photographic strobes, early car headlamps and high-intensity lamps all run on…

Spectra / Tees

Calcium's flame runs orange, carried by a close doublet at 610.3 and 612.2 nanometres the same test a chemist runs to…

Spectra / Tees

Strontium is the red in fireworks. Its emission lines from 460 to 605 nanometres are the reason pyrotechnicians reach…

Spectra / Tees

The Sun's light isn't continuous. Pass it through a prism and the rainbow has dark cuts in it Fraunhofer's lines, where…

Celestial / Wall art

Eight worlds circling one star, drawn as concentric orbits — a quiet diagram of home, in white line on a ruled…