He helium Element-Origin Context
ID: element.he.origin
Represents helium (He, Z=2) as a periodic-table element with bounded origin-family context.
Status: canonical_reference
Uncertainty
- This canonical_reference badge is a theory locator; its claim still needs independent, claim-specific validation.
Sources
- https://doi.org/10.18434/T4W30F
- https://doi.org/10.1086/149126
- https://doi.org/10.1103/PhysRev.55.434
- https://doi.org/10.1103/RevModPhys.29.547
Claim boundaries
- This badge locates a theory claim; it does not validate a physical effect or engineering application.
Diagnostic context only. Cite independent evidence for claims about the world.