Miss Yan, I'm sorry, but students are going to teach all beings today.
A: No, the formula of specific emissivity is:
Therefore, the brightness temperature of an object is related to wavelength, temperature and reflectivity. When it is higher than the emissivity, the emissivity is not necessarily high at this time. Moreover, the relationship between the temperature retrieved from the radiation equation and the brightness temperature is TB = ε t, so when the emissivity is high, it is not necessarily higher than the emissivity.