# Black Bodies - We can approximate stars as perfect black bodies - This means there is a relationship between the wavelength of the star and the temperature of the star - Myth: yellow star like the sun emits more yellow photons than a blue star - Actually the blue star is far hotter and emits more photons of every wavelength! - It's where it peaks that we see it's colour ## Wien's Law - Inverse relationship between temperature and peak wavelength - Hotter star - bluer - Cooler star - redder # References 1. # Footnotes