Heat energy is needed to increase the temperature of an object. The amount of energy needed depends on the mass of the object, the type of material it is made from and the temperature increase.
Heat energy is also absorbed when substances melt or boil, but the temperature does not alter during a change of state. The amount of energy needed to melt or boil something depends upon the mass of the object and the type of material it is made from.
Temperature and heat are not the same thing because:
Temperature is measured in ºC, and heat is measured in J.
Thermal imaging cameras can detect infrared radiation - the type of radiation emitted by all objects. The images they produce are called thermograms. False colours are added to a thermogram to give an indication of how hot each object in the image is, with:
In the thermogram shown here, the burner and its flame are the hottest parts. The pan and its contents are much colder and have yet to warm up.
This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.