Hello Just wondering why milk is white... I thought it was similar to the reason that clouds are white - ie. clouds are white because the water droplets scatter all wavelengths of light. So I thought then that milk was white because the droplets of fat suspended in the milk also scatter all wavelengths of light... I had cause to doubt this because I did a quick google search and all answers I found suggested milk was white because it contained lots of substances that are themselves white... .