Light Flashcards
1
Q
LDTN
A
Less dense medium to denser medium, towards the normal
2
Q
MDAN
A
More dense medium to less dense medium, away from the normal
3
Q
Critical angles
A
Water - 48
Perspex - 42
Glass - 41
Diamond - 24
4
Q
Total internal reflection
A
If the incident ray comes in beyond the critical angle then all light will reflect out
5
Q
Principal focus
A
The point where light rays meet up
6
Q
Refractive index formula
A
Sin i / sin r
Speed of light in a vacuum/speed of light in a medium
1/sin c == sin i/sin c
7
Q
Sin r formula
A
Sin i/refractive index
8
Q
Sin c formula
A
1/RI
9
Q
Sin i formula
A
RI X sin r
10
Q
Reflective index’s
A
Water - 1.33
Glass - 1.5
Diamond - 2.42
