6.3 Absolute Zero

Thermometers Measure Temperature

Temperature is best judged using some external reference, such as the expansion or contraction of a liquid. Two temperature scales, the Celsius and Fahrenheit, are demonstrated. Duration: 6:06

The Tailor of Celsius!

The story of the tailor of Celsius is used to illustrate the need for the Kelvin temperature scale. This absolute scale is then compared with the Celsius and Fahrenheit scales. Duration: 8:16