Refraction of Light

1
Refraction of Light
2
(No Transcript)
3
(No Transcript)
4
Index of Refraction

• Ni c/ci
• i refers to the medium,
• c is the speed of light in vacuum

5
Using the wave model
Na
qa
Nw
qw
6
Snells Law
7
Relative Index of Refraction
8
For light going from water to air

• Angle in water 1 is smaller than that in air 2
• If angle is increased at some time the angle in
  air is 90 degrees (Sin q2 1)
• Called the Minimum angle of refraction or angle
  of total internal refraction

9
(No Transcript)
10
(No Transcript)
11
(No Transcript)
12
(No Transcript)
13
(No Transcript)
14
(No Transcript)
15
(No Transcript)
16
(No Transcript)
17
(No Transcript)
18
(No Transcript)
19
(No Transcript)
20
(No Transcript)
21
(No Transcript)
22
Secondary Bow

• Two total internal reflections
• Fairly common
• Third and Fourth order bows are theoretically
  possible but not reported

23
Supernumeraries

• Primary bow is really two or more bows in itself.
• Mathematical description is somewhat difficult

24
(No Transcript)
25
(No Transcript)
26
Ice Crystal Optical Phenomena
27
Refraction in Platelets
28
(No Transcript)
29
(No Transcript)
30
(No Transcript)
31
(No Transcript)
32
(No Transcript)
33
(No Transcript)
34
(No Transcript)