| Webster's Online Dictionary |
| Expressions | Domain | Definition | |
| Hemispherical emittance | Aerospace | The ratio of the emissive power of a specimen to that of a black body at the same temperature, considering radiation emitted in all possible directions. Symbol eh, Eh. (references) | |
| Total hemispherical emittance | Geography | The emittance of a sample at a given temperature, integrated over all angles of emission. Source: European Union. (references) | |
Source: compiled by the editor from various references; see credits. | Top | ||
