Canonical Gymnasium Physics M2 Lane Shortlist

Snapshot: 2026-04-19

This document narrows the first post-M1 Physics rollout move.

It started intentionally smaller than a full machine-readable rollout tracker. Physics now has that tracker because Hessen, Bayern, Nordrhein-Westfalen, Baden-Wuerttemberg, Berlin, Brandenburg, and Schleswig-Holstein are active on the current canonical path. The shortlist still exists because it keeps the narrower M2 corridor reasoning readable beside the machine-readable tracker.

Execution reset on 2026-04-19:

Physics now follows the same rollout discipline as Mathematics again:
first archive the official source material for every still-missing Bundesland locally
and do that for Sek I and Sek II together where applicable
only then continue the topic-first horizontal reviewed pass
this means the next active Physics move is no longer another Rheinland-Pfalz widening
the active tranche is now the missing-state source onboarding for:
DE-HB
DE-HH
DE-MV
DE-SL
DE-SN
DE-ST
DE-TH

Execution update on 2026-04-11:

the recommended first third-state lane is no longer only proposed
DE-NW upper-secondary Physics now has:
an active source snapshot
a source-landscape registry entry
provenance-backed membership and closure entries
a reserved repository-backed mapping scaffold
the next recommended fourth-state lane is now no longer only proposed either
DE-BW upper-secondary Physics now has:
an active source snapshot
a source-landscape registry entry
provenance-backed membership and closure entries
a repository-backed mapping fixture
one first reviewed narrow field corridor across the shared orientation anchor plus Basisfach/Leistungsfach Elektromagnetische Felder
one adjacent BF-electrodynamics induction strip on the shared canonical induction cluster plus three aligned induction atoms
one adjacent BF-applications follow-on on a new narrow canonical induction-applications atom
one adjacent BF-Maxwell-overview follow-on on a new narrow canonical Maxwell-overview atom
one adjacent BF-Schwingungen follow-on on the shared canonical Q2 surface plus four conservative reviewed oscillation bridges
one adjacent BF-Wellen follow-on on the canonical Mechanische Wellen cluster plus six conservative reviewed wave and spectrum bridges
one adjacent LF-electrodynamics follow-on on three exact canonical induction atoms
one first adjacent LF-Schwingungen follow-on on the shared canonical Q2 surface plus three exact reviewed leaf bridges on mechanical DGL solving, LC-DGL solving, and independent-oscillation superposition
one first adjacent LF-Wellen follow-on on two exact reviewed leaf bridges for progressive plane transverse-wave modeling and Hertz-dipole / electromagnetic-radiation transfer
one first adjacent LF-Wellenoptik follow-on on two exact reviewed leaf bridges for coherent light as electromagnetic wave and the comparison of ray and wave model of light
DE-NI upper-secondary Physics now also has:
an active source snapshot
provenance-backed membership and closure
a repository-backed mapping lane with 55 reviewed mappings
one shared orientation anchor
one reviewed E-phase Dynamik corridor
one adjacent reviewed E-phase energy strip on Kinetische Energie and Energieerhaltung, while the sustainability-only Bewertungsblatt remains source-led
one first reviewed qualification-phase Elektrizitaet strip on Potenzial und Kondensator, Stromstärke als Ladungstransport, Arbeit, Spannung und Potenzial im E-Feld, Kondensator und Feld im Plattenkondensator, Auf- und Entladen eines Kondensators, and Energie des elektrischen Feldes
one adjacent reviewed qualification-phase magnet-field strip on Magnetisches Feld, Magnetische Felder und Feldlinienbilder, Kraft auf stromdurchflossene Leiter, Lorentzkraft auf freie Ladungen, and Geladene Teilchen in homogenen magnetischen Feldern untersuchen
one adjacent reviewed crossed-field follow-on on Geladene Teilchen in homogenen elektrischen Feldern untersuchen
one adjacent reviewed fine-beam-tube follow-on on the new shared Q1 measurement leaf Fadenstrahlrohr als Elektronen-Messverfahren einordnen
retained Bayern source evidence on Elektronenablenkroehre / Fadenstrahlrohr is now imported as the reviewed second-state corridor that justifies that shared atom
one adjacent reviewed qualification-phase induction strip on Magnetfeld von geradem Leiter und Spule, Induktion durch Änderung des magnetischen Flusses, Induktionsgesetz und Lenz’sche Regel, and Technische Anwendungen des Induktionsgesetzes qualitativ beschreiben
one adjacent reviewed LK follow-on on Hall-Effekt anwenden, Induktionsgesetz in Differenzialform, Selbstinduktion und Induktivität, and Energie gespeicherter Magnetfelder
one first reviewed Q2 oscillation strip on Harmonische Schwingung verstehen, Charakteristische Schwingungsgrößen, Lineare Rückstellkraft bei harmonischen Schwingungen beschreiben, Energie und Energieerhaltung in Schwingungen, Gedämpfte Schwingungen beschreiben, Erzwungene Schwingungen und Resonanz, Elektromagnetischen Schwingkreis analysieren, and Thomson’sche Schwingungsgleichung nutzen
one adjacent reviewed Wellen strip on Mechanische Wellen, Harmonische Wellen und ihre Größen, Wellenphänomene, Polarisation, Überlagerung und Interferenz von Wellen, Stehende Wellen und Wellenlängenbestimmung, Spektren mit Beugungsgitter deuten, Spektrum elektromagnetischer Wellen, and Bragg-Bedingung anwenden (LK)
one adjacent reviewed Michelson follow-on on Interferometer verstehen
DE-BE upper-secondary Physics now also has:
an active source snapshot
a source-landscape registry entry
provenance-backed membership and closure
a repository-backed mapping lane with 24 reviewed mappings
one shared orientation anchor
one structural Q1 field anchor
one first reviewed Q1 electric-field / capacitor corridor
one first reviewed retained 3.2.1 magnetic-field / Lorentz-force follow-on
one first reviewed retained 3.2.2 charged-particle-motion follow-on
one explicit LK follow-on on crossed fields / Hall-Effekt / Elektronenstrahlroehre where narrow shared targets already exist
one explicitly deferred shared BE/BB residue on c0, Relativitaet, and beliebige Eintrittswinkel
DE-BB upper-secondary Physics now also has:
an active source snapshot
a source-landscape registry entry
provenance-backed membership and closure
a repository-backed mapping lane with 24 reviewed mappings
one shared orientation anchor
one structural Q1 field anchor
one first reviewed Q1 electric-field / capacitor corridor from the shared BE/BB source family
one first reviewed retained 3.2.1 magnetic-field / Lorentz-force follow-on from the same shared BE/BB source family
one first reviewed retained 3.2.2 charged-particle-motion follow-on from the same shared BE/BB source family, while c0, relativistic mass, and arbitrary entry angles remain explicit shared residue
DE-SH upper-secondary Physics now also has:
an active source snapshot
a source-landscape registry entry
provenance-backed membership and closure
a repository-backed mapping lane with 22 reviewed mappings
one shared orientation anchor
one structural upper-secondary field anchor Elektrische und magnetische Felder
one first reviewed field-concept corridor on the official SH subtopic Das Feldkonzept zur Beschreibung von Wechselwirkungen
one first reviewed static-fields follow-on corridor on the official SH subtopic Koerper in statischen Feldern
one second reviewed SH follow-on on Elektronenmessung und technischen Anwendungen inside the same SH source family
one third reviewed SH follow-on on Kreisbewegungen inside the same SH source family
one adjacent SH Massenspektrometer leaf that stays intentionally source-led because the current shared canonical Physics surface still has no narrow reviewed target for it
one adjacent SH Drehimpuls und Drehimpulserhaltung leaf that stays intentionally source-led because the current shared canonical Physics surface on that concept is still a separate Drehbewegungsflaeche
no Schleswig-Holstein-specific canonical Physics atom and no committed Schleswig-Holstein applicability cut yet
DE-RP upper-secondary Physics now also has:
an archived official MSS Physics PDF
an active source snapshot
a source-landscape registry entry
provenance-backed membership and closure
a repository-backed mapping lane with 69 reviewed mappings
one shared orientation anchor
one structural Qualifikationsphasen-Anker Statische elektrische und magnetische Felder
one first reviewed gemeinsamer Grundfach-/Leistungsfach-Korridor on the Pflichtbaustein Feldkonzept fuer statische elektrische und magnetische Felder
one first reviewed GF/LF-common follow-on on Wechselwirkung von geladenen Koerpern mit statischen Feldern
one first narrow reviewed LK follow-on on Hall-Effekt
two adjacent conservative LK follow-ons on Kreisbahnen im homogenen Magnetfeld and gekreuzten elektrischen und magnetischen Feldern
one first reviewed GF/LF-common induction corridor Veraenderliche elektromagnetische Felder
one adjacent shared induction follow-on on Selbstinduktion und Ein-/Ausschaltvorgaengen bei der Spule
one adjacent narrow LK induction follow-on on Induktionsgesetz in differentieller Form
one first reviewed GF/LF-common harmonics corridor Harmonische Schwingungen
one first reviewed Grundfach wave corridor Harmonische Wellen
one first reviewed Grundfach superposition/interference follow-on Superposition von Wellen
one first narrow reviewed LF follow-on Harmonische Wellen und ihre Superposition
one first narrow reviewed LF-Pflichtbaustein follow-on Schwingungen und Wellen
one first reviewed Grundfach quantum corridor Quantenobjekte I
one first narrow reviewed LF quantum-object follow-on Quantenobjekte II
one first reviewed Grundfach atom-model corridor Quantenmechanische Atomvorstellung I
one first narrow reviewed LF atom-model follow-on Quantenmechanische Atomvorstellung II
one first narrow reviewed LF interaction follow-on Wechselwirkung von Quantenobjekten
the retained RP field/induction family is now closed on the current conservative reviewed cut
one adjacent RP harmonics leaf on the dependence of the period on system quantities stays intentionally source-led
one adjacent RP Grundfach wave leaf on wave types / polarization stays intentionally source-led
one adjacent RP Grundfach superposition leaf on the spectrum of white light at the double slit stays intentionally source-led
one adjacent RP LF leaf on coupled oscillations stays intentionally source-led
those four RP oscillation/wave micro-residues are now explicitly frozen as source-led residues on the current reviewed cut
one adjacent RP quantum leaf on the approximate experimental determination of Planck's constant stays intentionally source-led because the current shared canonical method surface remains photoeffect-specific
no Rheinland-Pfalz-specific canonical Physics atom and no committed Rheinland-Pfalz applicability cut yet

1. Current constraint

Canonical Physics has now reached hardened M1 parity for the reviewed DE-HE + DE-BY corridor.

What does not exist yet for Physics beyond the currently active Hessen, Bayern, Nordrhein-Westfalen, Baden-Wuerttemberg, Berlin, Brandenburg, and Schleswig-Holstein surface:

no additional Physics source-json snapshots outside Hessen, Bayern, Nordrhein-Westfalen, Baden-Wuerttemberg, Berlin, Brandenburg, Schleswig-Holstein, and Rheinland-Pfalz
no additional Physics source-landscape registry entries outside Hessen, Bayern, Nordrhein-Westfalen, Baden-Wuerttemberg, Berlin, Brandenburg, Schleswig-Holstein, and Rheinland-Pfalz
no reviewed fifth-state Physics composition views yet
the first active ninth-state Physics lane now exists on DE-RP upper-secondary Physics, but it is no longer the active widening target; Rheinland-Pfalz is frozen at the current reviewed cut while the missing-state source-onboarding tranche is completed first

What does already exist and can be reused:

DE-level input folders and subject-source links for many Bundeslaender under curricula/DE/Gymnasium/input/*/README.md
established mapping-lane naming conventions from mathematics, for example:
curricula/DE/Gymnasium/mapping/DE-NW/upper-secondary/nrw_math_upper_secondary_to_canonical_math.json
curricula/DE/Gymnasium/mapping/DE-BW/upper-secondary/bw_math_upper_secondary_to_canonical_math.json
curricula/DE/Gymnasium/mapping/DE-BE/upper-secondary/be_math_upper_secondary_to_canonical_math.json
active mathematics source-json lanes for all Bundeslaender, which means the repo structure and registry workflow are already proven

Operational consequence:

the next Physics move no longer needs another NI widening on the already closed retained NI pilot corridor; Niedersachsen now stays on maintenance and now carries the reviewed Michelson, crossed-field, and fine-beam-tube follow-ons, while only the sustainability-related Bewertungsblatt remains intentionally source-led
the first slice should prefer upper-secondary Physics, because the canonical Physics graph and composition views are already strongest there

2. Candidate ranking

Candidate lane	Priority	Why it is attractive	Main complication	Recommended first slice
`DE-NW` upper-secondary	`1`	Separate Gymnasium-Oberstufe Physics source, existing math source-snapshot lane, no shared-state curriculum semantics, good fit for current canonical Sek-II Physics surface	still needs the first Physics snapshot and registry activation from scratch	one upper-secondary source snapshot plus one first reviewed entry corridor
`DE-BW` upper-secondary	`2`	Clear Kursstufe source shape (`Basisfach` / `Leistungsfach`), existing math Stage-C pattern in repo, good fit for `GK` / `LK` composition scopes	terminology and course packaging differ from Hessen/Bayern and may need careful placement semantics	one upper-secondary source snapshot plus one first reviewed entry corridor
`DE-BE` + `DE-BB` upper-secondary	`3`	one shared source family could later unlock two states with one authoring surface	shared-curriculum handling increases provenance and applicability coordination immediately	first one shared upper-secondary source snapshot family, then split jurisdiction-specific mapping lanes
`DE-SH` combined-stage Physics	`4`	one source family covers the subject broadly and could reduce source hunting	combined-stage source shape is less aligned with the existing Physics `SekI` / `SekII` split	one upper-secondary-focused source cut extracted from the combined source
`DE-NI` upper-secondary	`5`	strong repo familiarity from math onboarding and clear Sek-II Physics source link	Sek-I source is a broader Naturwissenschaften lane, so a future full-state bundle would not stay as cleanly Physics-only	one upper-secondary source snapshot only; defer Sek-I decisions

Not recommended as the first M2 lane:

a new Sek-I-only Physics lane
a simultaneous DE-BE + DE-BB two-state rollout
any lane that starts by inventing state-scoped composition views before there is a source snapshot and mapping evidence

3. Historical first executable lane

Recommended lane: DE-NW upper-secondary Physics

Why this is the cleanest next cut:

it extends Physics beyond Hessen+Bayern without introducing shared-source dual-state semantics on day one
it reuses a repo area that already exists for math:
curricula/DE/Gymnasium/input/NW/upper-secondary/source-json/
curricula/DE/Gymnasium/mapping/DE-NW/upper-secondary/
it stays on the strongest part of canonical Physics:
upper-secondary phase/course structure
existing GK / LK learner-facing views
existing Math-to-Physics bridge behavior
it preserves the rule that new state lanes should be source-led and corridor-based rather than view-led

4. Historical minimal artifact bundle for the NRW move

The next step should create only the smallest bundle that turns DE-NW from README-only into a real Physics source lane:

source snapshot
target file:
curricula/DE/Gymnasium/input/NW/upper-secondary/source-json/DE_NRW_S_GYM_2_PHYSIK.de.json.snapshot
purpose:
establish the first archived NRW upper-secondary Physics source lane under the DE-level input structure
source-landscape registry activation
target file:
curricula/DE/Gymnasium/provenance/source-landscape-registry.json
purpose:
register the NRW upper-secondary Physics source landscape and its archiveSourcePath
provenance seed
target files:
curricula/DE/Gymnasium/provenance/source-goal-membership-registry.json
curricula/DE/Gymnasium/provenance/source-goal-closure-registry.json
purpose:
activate the snapshot as a provenance-backed source lane, even if the first pass is still structural or narrow
mapping-lane scaffold
target file:
curricula/DE/Gymnasium/mapping/DE-NW/upper-secondary/nrw_physics_upper_secondary_to_canonical_physics.json
purpose:
host the first NRW upper-secondary Physics mappings under the normal DE-level naming convention
first reviewed corridor
rule:
choose one didactically closed upper-secondary entry corridor from the imported snapshot
prefer a corridor that can reuse the existing canonical Physics Sek-II surface and current Math bridge without forcing new broad composition debt
execution update on 2026-04-10:
done for DE-NW on the shared motivation plus E-phase entry corridor
done for DE-NW on a second narrow GK Quantenobjekte corridor by anchoring NRW Photonen / Elektronen / Modelle conservatively to the canonical Q3 Welle-Teilchen-Dualismus surface
done for DE-NW on a third narrow split GK corridor by anchoring the imported light-wave atom to canonical Q3 Elektromagnetische Wellen and the imported field atom to canonical Q1 Elektrisches und magnetisches Feld
done for DE-NW on a first narrow LK corridor by anchoring the imported mixed LK parent to canonical Q4 Struktur von Materie, Raum und Zeit and its two LK children to canonical Quantenobjekte and Kernphysik
done for DE-NW on a first narrow LK residue split by widening the imported Atom- und Kernphysik source residue into Materie, Strahlung/Zerfaelle, and Bewertung, then anchoring the latter two conservatively to canonical Radioaktive Strahlung und Wirkungen and Beurteilung von Strahlungsrisiken und Kernenergie
done for DE-NW on a second narrow LK residue split by widening the imported radiation residue into Strahlung/Wirkungen and Zerfaelle/Kernumwandlungen, then anchoring those children conservatively to canonical Radioaktive Strahlung und Wirkungen and Zerfallsgesetze anwenden
done for DE-NW on a third narrow LK residue split by widening the imported judgement residue into Strahlungsrisiken and Kernenergieoptionen, then anchoring those children conservatively to the canonical Q4 context leaves on Strahlungsrisiken and Kernenergieoptionen
done for DE-NW on a preparatory source-only LK matter split by widening the imported matter residue into Elementare Bestandteile der Materie mit Strukturmodellen ordnen and Kernaufbau und Bindungen in einfachen Modellen beschreiben without yet claiming a canonical bridge
done for DE-NW on a first narrow LK matter bridge by anchoring Elementare Bestandteile der Materie mit Strukturmodellen ordnen conservatively to the broad canonical Q4 cluster Elementarteilchen und Standardmodell
done for DE-NW on a second source-only LK matter split by widening the remaining Kernaufbau/Bindungen residue into Kernaufbau and Bindungen/Modellgrenzen without yet claiming another canonical bridge
done for DE-NW on a second narrow LK matter bridge by anchoring Kernaufbau in einfachen Modellen beschreiben conservatively to the existing canonical structural atom Kern und Hülle des Atoms qualitativ beschreiben instead of forcing a sharper Q4 energy/reaction target
done for DE-NW on a third source-only LK matter split by widening the remaining Bindungen/Modellgrenzen residue into Bindungen and Modellgrenzen without yet claiming another canonical bridge
done for DE-NW on an explicit no-bridge review for the remaining LK Bindungen child: the current canonical candidates Bindungsenergie und Massendefekt, Potenzialtopfmodell für Kerne, and Fundamentale Wechselwirkungen all overclaim relative to the NRW source wording, so the lane intentionally stops short of another mapping here
done for DE-NW on a first committed applicability pass by persisting compiled NRW visibility for seven shared canonical Physics targets and by moving the corresponding NRW-only APV-202 findings into the accepted-warning registry
done for DE-NW on a committed matter-structure follow-on by replacing the earlier broad Elementarteilchen und Standardmodell bridge with a new narrow canonical atom Elementare Bestandteile der Materie mit Strukturmodellen ordnen, which now carries DE-NW directly while the parent cluster follows through child-union
done for DE-NW on a committed GK field follow-on by splitting the imported mixed E/B-field clause into electric- and magnetic-field children and exact-anchoring both to new narrow canonical Q1 atoms, which now pull Q1 Elektrisches und magnetisches Feld and its reviewed electric/magnetic parent clusters into DE-NW through child-union
done for DE-NW on a committed GK quantum-object follow-on by exact-anchoring the two imported Photon/Elektron children to new narrow canonical Q4 atoms, which now pull the shared canonical Quantenobjekte cluster into DE-NW through child-union while the GK parent still keeps the reviewed Q3 duality corridor alive
current reviewed bridges still stay deliberately narrow and mostly partial, because the canonical Physics graph still does not expose one-to-one NRW surfaces for the imported periodische Vorgaenge wording, for the mixed NRW parent Klassische Wellen und Teilchen in Feldern, or for the still unmapped NRW LK matter children on Bindungen and Modellgrenzen
test fence
minimum expected checks after the first NRW Physics lane becomes real:
mapping fixture coverage
LandscapeServiceTest coverage if applicability/provenance visibility changes
app validation for graph and view filters

5. What should not happen on the first NRW move

Do not do these as part of the first NRW step:

no third-state Physics rollout tracker yet
no speculative DE-NW Physics composition views before the first source-backed corridor proves they are needed
no broad canonical Physics expansion just to accommodate NRW packaging
no simultaneous NRW Sek-I onboarding

The clean boundary is:

first make NRW upper-secondary Physics a real DE-level source lane
then map one reviewed corridor
only then decide whether NRW-specific learner-facing trees differ enough from the DE-wide Physics views to justify explicit state views

6. Historical tracker trigger after NRW

Adding DE-NW would still not justify the full machine-readable Physics Bundesland rollout tracker.

That tracker becomes worth adding once:

Physics has at least one more non-Hessen state beyond Bayern, and
a further next lane is ready after that, so there is real multi-state rollout sequencing pressure

Practical rule:

after DE-NW, the next clean tracker trigger would be a further state such as DE-BW or the shared DE-BE / DE-BB source family

7. Historical definition of success for the first execution turn

The next implementation turn is successful if it leaves Physics with:

one chosen third-state lane
one real archived source snapshot for that lane
one active source-landscape registry entry
one provenance-backed source lane
one mapping-lane file path reserved for Physics under the normal naming convention

At that point, Physics moves from "M1 complete" into real M2 execution instead of staying at the level of abstract rollout intent.