Light and the Information it carries

1
Light and the Information it carries

• Lecture 1

2
Electromagnetic Spectrum
3
Visible light
4

• Human Bee

5
Light and the environment

• absorption
• diffraction
• refraction
• reflection

6

• Light striking an opaque surface
• absorption
• matt black surface - absorbs most light, reflects
  little
• silvered surface - absorbs little, reflects most
• reflection
• reflects some wavelength more than others
• a green leaf absorbs red light (and so reflects
  less) and so appears green
• texture influences how coherently light is
  reflected

7
Reflection

• Smooth Rough

8
Ambient Optic Array 1
9
Each visible surface structures the pattern of
light The Optic array is the structured pattern
of light reaching the observers eye from the
environment
10
Optic Array 2
11
Optic Array 3