第十九章 量子物理(国外英文资料).docVIP

第十九章 量子物理(国外英文资料) When I read, I would like to stay in front of every good thought, just like staying in front of every truth. - Emerson The nineteenth chapter quantum physics 19-1 when the blackbody is heated, the peak wavelength of its monochromatic emittance varies from 0.69 m to 0.50 m, and how many times does it increase? (answer: 3.63) 19-2, the stellar surface can be regarded as a blackbody. The peak wavelength of the North Star radiation spectrum is measured. M =350nm (1nm=10, 9m), the surface temperature and the radiation power per unit area are estimated (b = 2.897 * 10-3 M = K = 5.67 * 10-8 W/ (M2 = K4)) (answer: 8280 K, 2.67 x 108 W/m2) 19-3 the radiation emission of a blackbody at a certain temperature is 5.7 * 104 W/m2, and the peak wavelength of the radiation spectrum at this temperature is calculated. M. (b = 2.897 * 10-3 M = K = 5.67 * 10-8 W/ (M2 = K4)) (answer: 2.89 x 10-6 m) 19-4 solar power (called solar constant) equal to 1.37 * 103 W/m2. is known to be perpendicular to the earths surface per unit area (1) seeking the total power of solar radiation; (2) consider the sun as a blackbody and calculate the temperature of the suns surface (the average distance between the earth and the sun is 1.5 * 108 km, and the radius of the sun is 6.76 * 105 km = 5.67 * 10-8 W/ (M2 = K4) (answer: 3.87 x 1026 W; 5872 K K) 19-5 radiation pyrometer measured the steelmaking furnace radiant exitance is 22.8 W - cm-2, find the temperature inside the furnace. (Van constant = = 5.67 * 10-8 W/ (m2. K4)) (answer: 1.42 x 103 K) The wavelength is 19-6? The photoelectric effect occurred monochromatic light emission of a metal surface of M optoelectronic (charge absolute value is e, the mass of M) by S after entering the vertical slit uniform magnetic field of magnetic induction as (as shown), we measured the radius of electronic circular motion in the magnetic field for R. (1) the escaping work of metallic materials A; (2) curb potential Ua. (answer:) 19-7 irradiation of a m