Radiation

Factors affecting rate of infrared radiation:

1.Colour and texture of the surface

(comparison between dull,black surfaces and

shiny, white surfaces on previous post)

2.Surface temperature

(The higher the temperature of the surface of the objectrelative to the surrounding temperature, the higher the rate of infrared radiation)

3.Surface area

(Compare two objects with the same mass and material but with different surface areas. The object with the larger surface area will emit infrared radiation at a higher rate.)

Note

The higher the rate of infrared radiation means the amount of heat released from the object is high.