Lecture 5 repeat Flashcards Preview

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Flashcards in Lecture 5 repeat Deck (14):
0

the bending of light waves at an angulated surface of a transparent material is known as this?

Refraction

1

light striking a perpendicular surface will continue on through....with or without bending?

without

2

the degree of refraction means what if you put it simply?

the amount of bending

3

the Amount of bending depends on what?

1. the degree of angulation between interface and the entering light wave

2. ratio of the refractive indices and transparent media

4

1 diopter is equivalent to?

1 meter divided by the focal length of a lens

5

a measure in Diopters of how much a lens bends light waves is the?

Refractive power

6

What is the Refractive index?

the ratio of light velocity in air to light velocity traveling through a substance

7

what is the Refractive index of air?

1.00

8

The point through which all parallel rays of light will pass after passing through each part of the lens

Focal point

9

The focal length is the distance from the center of the lens to?

the focal point

10

an object projected on the Retina, inside the eye, will be seen as?

reversed and inverted

11

what is the function of the Iris?

to control the amount of light entering the eye from darkness to light conditions

12

pupillary diameter is indirectly proportional to?

the depth of lens focus. as depth increases, diameter decreases.

13

the total refractive power of the Human eye is approximately?

59 Diopters