Definition availableExact definition Candidate definition
Watt per square metre
W/m²cx:W_m2 · Irradiance
1 W/m² = (1 W)^1 × (1 m²)^-1.
- Quantity kind
- Irradiance
- SI dimension
M · T^-3- Allowed roles
- Scalar
- Unit system / convention
- Coherent SI
- Registry code
W_m2
Scope and distinctions
Definition metadata. Quantity kind and model-field semantics determine compatibility; no new UUCE execution or CVP claim.
Available operations
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Verification scope
New UUCE conversion paths have not been CVP-verified or production-attested. An exact unit definition is not a verification claim.
Candidate is a registry lifecycle state. It is not a completed review or CVP verification.
Definition sources
- BIPM — The International System of Units (SI)
9th edition, version 4.01, June 2026
Tables 4–7: coherent derived units, unit algebra and decimal prefixes
Source checked:Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.
Definition and registry versions
- Definition revision
- 1.0.0
- Registry snapshot
- 0.3.0-preview.3 · preview
- Definition lifecycle
- candidate
- Definition owner
- core.metrology
- Definition digest
0b6ce1b5af7fb509637bcbef1492c526409dfff7e4e24d609b7bac95f1f6f09c- Definition dependency digest
24c3dc8880c186f4e3c7a141cc86e60867e3c96eec45cb260177aa08a41d9122
Digests identify definition content; they are not CVP evidence or production attestations.