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Quiz 2

QuestionAnswer
Barrier Filter - intended to suppress or block (absorb) certain wavelengths and permit only selected wavelengths to pass through - blocks reflected light and transmits fluoresced light
Bypass Filter - allows limited range of wavelength to be recorded and blocks all other colours - used w/ ultraviolet which only allows ultraviolet range of wavelength
Electromagnetic Wavelength - Red is 700nm has lower frequency and less energy - Blue is 400nm has higher frequency and more energy - Orange = 620nm - Yellow = 590nm - Green = 575nm - Violet = 400nm - Near UV area = 300-400 - Near IR area = 700-1100 - Visible area = 400-700
Which wavelength has high/low frequency? - short wavelength, towards UV, = high frequency - long wavelength, towards IR = low frequency
Primary Characteristics of Light 1. Wavelength 2. Frequency 3. Speed
Specular Light - light strikes a smooth surface (A) and reflects at the same angle and parallel
Fluorescence - emission lasts about 1 second after emitting radiation is discontinued
Stokes Shift - Stokes Shift was coined by Sir George Stoked in 1850 - has longer wavelength than incident radiation
Phosphorescence - range of luminescence is several seconds after emitting radiation is discontinued - example: hands if a watch
Red 700nm and has lower frequency and less energy
Blue 400nm and has higher frequency and more energy
Orange 620nm
Green 575nm
Yellow 590nm
Violet 400nm
Created by: iniyas
 

 



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