watt per square metre
SI coherent derived unit whose name and symbol includes an SI coherent derived unit with a special name and symbol
| Name | Symbol | Quantity | Expressed in terms of SI base units | |
| watt per square metre | W/m2 | heat flux density, irradiance |
kg s−3 |  |
DefinitionThe watt per square metre, symbol W/m2, is the SI coherent derived unit of heat flux density, and irradiance. |
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Metric System 