Part B: Wien's law Wien's law states a relationship between the temperature of a blackbody and its peak wavelength emission. Check the box graph values. On the table below record the values of the peak wavelength emission and its correspondent temperature. Be aware that in this case the temperature will be the independent variable, so be sure to take readings with the same interval distance. Leave the third column blank. Temperature (K) Wavelength (um) Table 1. T and peak-wavelength