Chapter 7light Flashcards Preview

Physical Science 105 Sem 1 > Chapter 7light > Flashcards

Flashcards in Chapter 7light Deck (25):
1

visible light

incandescant

2

reflection

parellel rays

3

diffuse reflection

light reflected in random directions off objects

4

light interacts with matter whar three ways

reflection, diffuse reflection, absorbtion

5

opaque

reflects light

6

transparent

transmitting light

7

incoming light is called

incident ray

8

the incident ray and reflected rays angles are related how?

same angle

9

perpendicular to point of reflection

the normal

10

flat mirrors produce what image

virtual

11

light rays originate from

a real image

12

in transparent medium light ray do what

refract

13

refraction depends on

incident angle and index of refraction

14

index of refraction

ratio of the speed of light in a vacuum to the speed of light in the medium

15

total internal reflection

refracted angle equals 90o

16

critical angle

limit to the angle of incidence

17

when are light rays reflected internally?

when the critical angle is 90+

18

spectrum

red to violet

19

what special property does a glass prism have?

dispersion

20

why does dispersion occur?

the index of refraction is different for each range of colors

21

interference

light passes through small slits or holes and produces and interference pattern of bright lines and dark zones

22

interference pattern

bright lines and dark zones

23

polarized light

virbrates in one direction only in a plane

24

what three ways can light be polarized?

by certain materials, by reflection or by scattering

25

polarizetion explained by what model

transverse wave model