Infrared Coffee

Here are two pictures of hot coffee in a metal cup. In the infrared image (right) notice the rings of color showing heat traveling from the coffee through the metal cup. You can see this in the metal spoon as well. This is a good example of a process called conduction. Conduction occurs when two object at different temperatures are in contact with each other. Heat flows from the warmer to the cooler object until they are both at the same temperature. To learn more about how heat can travel see our module on Heat and Temperature.