Radiation 5A: Radiation energy depends on temperature

This model shows how two heat radiators at different temperatures warm up remote objects through radiation. The dashed lines that will radiate out from the radiators represent invisible thermal radiation, which passes energy across space. Two thermometers are used to measure the heat gains at the objects.

1. Turn the graph on to monitor the change of temperatures.
2. Change the temperature of the left-hand side object using the radio buttons below the model.
3. Compare the heating effect of the radiation at different temperatures.
4. Reset the model each time you change the temperature of the left-hand side object.

After you have completed your investigation, answer the questions in your workbook.