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5.1 Light and the EM Spectrum - Coggle Diagram
5.1 Light and the EM Spectrum
Temperature
Radiation
All bodies emit infrared radiation
Higher temperature bodies emit greater radiation
Temperature decrease
Radiation emitted > radiation absorbed
Temperature increase
Radiation absorbed > radiation emitted
Constant temperature
Rate of absorption of radiation = rate of emission of radiation
Reflection
TIR
Total internal reflection
Used in optical fibres
Diffuse
Reflection from rough surface, causing scattering
Law of reflection
Angle of incidence = angle of reflection
Specular
Reflection from smooth surface in one direction
Critical angle
Minimum incident angle required for all light under TIR