4. Emissivity and Surface Properties

Learning outcomes
  • I can define emissivity and explain its effect on thermal radiation.
  • I can compare the thermal behavior of dark, light, dull, and shiny surfaces.
  • I can explain how surface properties affect the absorption and emission of radiation.
  • I can predict which materials are good absorbers or emitters of thermal energy.
  • I can apply emissivity concepts to practical situations such as solar collectors, clothing, and spacecraft.