Physics

Front 1

EM wave

Back 1

Oscillating electric and magnetic fields

Front 2

Polarization

Back 2

Direction of the waves oscillation

Front 3

Speed of light in vacuum

Back 3

3*10^8 m/s

Front 4

Visible light from lowest frequency (longest wavelength) to highest frequency (shortest wavelength)

Back 4

ROY G BV

Front 5

Photon Energy

Back 5

E = hf = h* c/wavelength

Front 6

Law of Reflection

Back 6

Angle of reflection = angle of incidence

Front 7

Angle of reflection and incidence are measured with respect to ..

Back 7

Normal

Front 8

Refraction

Back 8

bending of the light

Front 9

Index of refraction

Back 9

n = speed of light in vacuum/speed of light in medium

Front 10

Can n be less then 1?

Back 10

No, always more then 1, 1 for vacuum and air

Front 11

Law of Refraction

Back 11

n1 sin incidence angle= n2 sin refracted angle

Front 12

If n2>n1

Back 12

ray will bend toward normal

Front 13

n2<n1

Back 13

ray will bend away from normal

Front 14

Total internal reflection

Back 14

All of the incidents ray intensity is reflecte (no refraction) if incident angle exceeds critical angle

Front 15

Critical angle

Back 15

Sin critical angle = n2/n1

Front 16

For total internal reflection to occur

Back 16

n1 must be greater then n2

Front 17

Mirror

Back 17

Surface that forms an image of the object by reflecting light

Front 18

In the mirror object is

Back 18

same size, upright, not inverted, appears to be as far behind mirror as object in front of it

Front 19

Concave mirror

Back 19

Bends toward the subject

Front 20

Convex mirror

Back 20

bends away from the subject

Front 21

Focal point

Back 21

Halfway to the center of curvature

Front 22

Radius of curvature, r

Back 22

distance between center of curvature and mirror

Front 23

Focal length

Back 23

1/2 radius of curvature

Front 24

Mirror Equation

Back 24

1/o + 1/i= 1/f
o - objects distance from mirror
i - images distance from mirror

Front 25

Real image

Back 25

if i >0

Front 26

Virtual image

Back 26

if i<0

Front 27

Magnification equation

Back 27

m = - i/o, m- magnification factor

Front 28

Height of image

Back 28

height of object * m

Front 29

Upright image

Back 29

m>0

Front 30

Inverted image

Back 30

m<0

Front 31

Real images are

Back 31

inverted

Front 32

Virtual images are

Back 32

upright

Front 33

f for concave mirror

Back 33

>0

Front 34

f for convex mirror

Back 34

<0

Front 35

Lens

Back 35

thin piece of glass or plastic that that forms an image by refracting light

Front 36

Converging lenses

Back 36

thicker in the middle, focal point on the other side of lens, image toward the focal point

Front 37

Diverginf lenses

Back 37

thicker in the ends, focal point in front of lens, image away from focal point

Front 38

f for converging lens (convex)

Back 38

>0

Front 39

f for diverging lens (concave)

Back 39

<0

Front 40

Real images for lenses

Back 40

on the other side of lens, inverted

Front 41

Virtual images for lenses

Back 41

on the same side as object, upright

Front 42

Lens Power

Back 42

1/f

Front 43

units of f

Back 43

METERS

Front 44

Units of power

Back 44

D, diopter

Front 45

Lenses for nearsightedness

Back 45

diverging

Front 46

Lenses for farsightedness

Back 46

converging