• Block diagram of instrument for emission    i.e.,
•                                                          &  fluorescence
•                                                         phosphorescence
Light Source
Wavelength
  Selector
Sample
 Holder
Detector
   Signal
Processing
Readout
Device
Range of λ’s
Emitted λ Spectrum à I
Selected λ Band à I
Wavelength
  Selector
Selected λ Band for Excitationà Io