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This is an authored directed relation from the source endpoint to the target endpoint.
Relation ID
nucleus_to_finitesize
Relation type
Physical interaction / binding couples-interacts
Direction
source → target
Endpoint roles
source: Interacts with / binds; target: Interacts with / bound by
Authored annotation
extended charge distribution
Authored explanation
The finite nuclear charge radius perturbs electronic wavefunctions and energy levels.
How to interpret this relation type
The source field, particle, charge, current, or interaction couples to, acts on, binds, forms, or stabilizes the target in the stated regime. The edge label and detail must identify the exact coupling, interaction, or binding claim and its qualifications.
Relation sources
Wikipedia — Atomic nucleus — Atomic nucleus · encyclopedic reference · source ID wp-physics-atomic_nucleus
source: Historically motivated; target: Historically motivated by
Authored annotation
proton charge-radius sensitivity
Authored explanation
The puzzle highlighted how nuclear charge distributions shift atomic levels, especially in muonic hydrogen.
How to interpret this relation type
The source experiment, observation, anomaly, or problem materially motivated the development, revision, or acceptance of the target concept. Historical influence is not logical derivation; the edge detail states the documented role and avoids retrospective origin myths.