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| 单词 | stefan's law |
| 释义 | Stefan's law in British English (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–2 K–4 Also called: Stefan-Boltzmann law Word origin C19: named after Josef Stefan (1835–93), Austrian physicist |
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