Basic Optical Principles Flashcards
1
Q
Wavelength
A
Distance between two corresponding points on two consecutive waves
2
Q
Wavelength of the visible spectrum
A
400-700nm
3
Q
Nm
A
Nanometers
4
Q
Index of refraction
A
A measure of how much the speed of light is altered as it enters a given media relative to the speed of light in air
5
Q
Formula for the index of refraction
A
n=speed of light in air/speed of light in selected material
6
Q
Index of refraction-air
A
1.00
7
Q
Index of refraction- CR-39 Plastic
A
1.49
8
Q
Index of refraction-crown glass
A
1.52
9
Q
Index of refraction-polycarbonate
A
1.58
10
Q
Index of refraction-high index
A
1.60-1.74
11
Q
Diopter
A
Reciprocal of the focal distance in meters
12
Q
Formula for diopters
A
1/focal distance=power in diopters
13
Q
Speed of light
A
186,00 miles/sec
