13

Register 13 · Light & optics.

twelve marks · how the spectrum gets generated · same construction · 200×200 · integer geometry · currentColor + brass-deep · 12 marks · one of the 17 registers on the Backstaff.

This register is one face of the Backstaff evidence system — the held instrument that holds the measurement engine, maps compliance controls, and engraves every evidence record into a register of record. The full reference library lives at /corpus; the alphabetical view at /corpus/glossary; the operator view at /corpus/switchboard.

API path

Try the evidence path in the sandbox.

The Console shows the sealed evidence and lets anyone verify a record; the Docs carry the endpoints behind it.

Open the Console Read the Docs Read the capability briefing
01 ·

Marks.

12 source marks in this register.
Prism#01 · atom

splits white light into bands

Reference
Lens#02 · atom

biconvex · converges light

Reference
Ray#03 · atom

a single line of light

Reference
Focal point#04 · atom

where parallel rays converge

Reference
Beam splitter#05 · atom

50/50 diagonal mirror

Reference
Slit#06 · atom

single-slit aperture

Reference

parallel slits · interference pattern

Reference
Refraction angle#08 · atom

Snell's law at the interface

Reference
Mirror#09 · atom

angle in equals angle out

Reference
Aperture#10 · atom

adjustable opening

Reference
Iris diaphragm#11 · atom

multi-blade variable aperture

Reference
Interferometer#12 · atom

two-arm interference

Reference
API ·

When a regulator asks for proof, hand over records — not assurances.

record the duty · seal the receipt · verify offline

Planisphere records each duty event — an output marked, a disclosure shown, a review made — and seals it into a receipt that verifies offline against our published keys. You send hashes, never content. A record is evidence a third party can check; it is not a certification and not a legal determination.

Open the Console Read the Docs Read the capability briefing

See how a record is checked