Final answer:
Wien's law is predominantly used to find the temperature of an object by relating the peak wavelength of the emitted radiation to the object's temperature.
Step-by-step explanation:
Wien's law is used to find the temperature of an object by determining the relationship between the temperature of a blackbody and the wavelength at which it emits the greatest intensity of radiation. This law states that the peak wavelength is inversely proportional to the temperature, meaning that as the temperature of an object increases, the peak wavelength of emitted radiation shifts to a shorter wavelength, indicating that the object will emit photons with more energy.
As a result, objects that are hotter will appear to move from a red tint to a white and eventually to a blue tint as their temperature rises.