| 单词 | Stefan's law |
| 释义 | Stefan's law(ˈstɛfənz) noun the principle that the energy radiated per second by unit area of a black body at thermodynamic temperature T is directly proportional to T4. The constant of proportionality is the Stefan constant, equal to 5.670400 × 10–8 Wm–2K–4 Also called: Stefan-Boltzmann law Word origin C19: named after Josef Stefan (1835–93), Austrian physicist |
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