As children, we’re taught to paint cold things blue and hot things red. In science we learn that blue things are actually far hotter than red things! In this lesson, we will learn how hot objects radiate energy as light of many colors following what is called a black body curve.
http://tools.inspiringscience.eu/delivery/view/index.html?id=17a3606162d743c581e0de402ca1f7bf&t=p via Inspiring Science Education.