RadiationCopy

Learning Objectives

• Identify infrared radiation as part of the electromagnetic spectrum
• Describe experiments to show the properties of good and bad emitters and good and bad absorbers of infrared radiation
• Recognise that thermal energy transfer by radiation does not require a medium
• Describe the effect of surface colour (black or white) and texture (dull or shiny) on the emission, absorption and reflection of radiation
• Show understanding that the amount of radiation emitted also depends on the surface temperature and surface area of a body

Contents to learn

Radiation

Radiation is the flow of heat from one place to another by electromagnetic waves.

Radiation can occur in vacuum and does not require matter for the transfer of heat like conduction and convection.

Example for radiation : heat reaching earth from sun.