3)Studing black-body radiation experimentally equipment实验装置 P B A 平行光管三棱镜 测量系统 黑体
3) Studing black-body radiation experimentally equipment 实验装置 A L1 B P L2 C 黑体 平行光管 三棱镜 测量系统
TThe law about black- body radiation黑体辐射规律 a)J. Stefan--Ludwig 入0, (wcm um) Boltzmann law. 2200K 50 M 0(T) 2000K =5.67×108w/mK 30 800K J. Stefan--Ludwig 20 1000k Boltzmann constant 10 a(nm) 1.02.03.04.05.0 Moot) depend only on the temperature and are quite independent of the material and of the shape and size of the cavity
The law about black-body radiation黑体辐射规律 1.0 2.0 3.0 4.0 5.0 20 30 10 40 50 60 (nm) ( . ) 1 1 0( ) − − M T wcm m 2200K 2000K 1800K 1600K a) J.Stefan—Ludwig Boltzmarn law: 4 M0(T ) =T 5.67 10 w/ mK −8 = J.Stefan—Ludwig Boltzmarn constant M0(T) depend only on the temperature and are quite independent of the material and of the shape and size of the cavity