More Lessons: http://www.MathAndScience.com Twitter: https://twitter.com/JasonGibsonMath In this lesson, you will learn about the different temperature scales in common use in chemistry and physics. In this lesson we focus on Celsius and Fahrenheit scales. The Celsius scale has its zero degree reference point as the freezing point of water. the boiling point of water is defined at 100 C. Fahrenheit has a cumbersome definition which we discuss here, and we will learn how to convert between each of these temperature scales..