Transcript
Page 1: Physics 014 Images. Topics  Plane mirrors  Spherical mirrors  Thin lenses

Physics 014

Images

Page 2: Physics 014 Images. Topics  Plane mirrors  Spherical mirrors  Thin lenses

Topics

Plane mirrors Spherical mirrors Thin lenses

Page 3: Physics 014 Images. Topics  Plane mirrors  Spherical mirrors  Thin lenses

Plane Mirrors

A virtual image CANNOT be seen on a screen

A real image CAN be seen on a screen

Page 4: Physics 014 Images. Topics  Plane mirrors  Spherical mirrors  Thin lenses

Plane Mirrors

Page 5: Physics 014 Images. Topics  Plane mirrors  Spherical mirrors  Thin lenses

Plane Mirrors

Page 6: Physics 014 Images. Topics  Plane mirrors  Spherical mirrors  Thin lenses

Plane Mirrors

O is a point source of light Incident beams from O reflect off

plane mirror Beams reflect at angles consistent

with law of reflection Extend reflections to I, the virtual

point image

Page 7: Physics 014 Images. Topics  Plane mirrors  Spherical mirrors  Thin lenses

Plane Mirrors

Page 8: Physics 014 Images. Topics  Plane mirrors  Spherical mirrors  Thin lenses

Plane Mirrors

For the plane mirror,

i=-p

i is the image distance, p is the object distance

Page 9: Physics 014 Images. Topics  Plane mirrors  Spherical mirrors  Thin lenses

Plane Mirrors

Page 10: Physics 014 Images. Topics  Plane mirrors  Spherical mirrors  Thin lenses

Plane Mirrors

For extended objects Draw ray from base Draw several rays from tip Where ray extension from tip converge is

tip image point

Page 11: Physics 014 Images. Topics  Plane mirrors  Spherical mirrors  Thin lenses

Spherical Mirrors

Two types of spherical mirrors Concave mirror: light rays converge

on real focus Convex mirror: light rays diverge

from virtual focus

Page 12: Physics 014 Images. Topics  Plane mirrors  Spherical mirrors  Thin lenses

Spherical Mirrors

Page 13: Physics 014 Images. Topics  Plane mirrors  Spherical mirrors  Thin lenses

Concave mirrors: Increase image size Move image farther away Reduce field of view

Spherical Mirrors

Page 14: Physics 014 Images. Topics  Plane mirrors  Spherical mirrors  Thin lenses

Convex mirrors: Decrease image size Move image closer Increase field of view

Spherical Mirrors

Page 15: Physics 014 Images. Topics  Plane mirrors  Spherical mirrors  Thin lenses

Spherical Mirrors

We can find an expression relating the distances f, p, and i

fip

111

Page 16: Physics 014 Images. Topics  Plane mirrors  Spherical mirrors  Thin lenses

Spherical Mirrors

How do I find the image using rays?

Page 17: Physics 014 Images. Topics  Plane mirrors  Spherical mirrors  Thin lenses

Spherical Mirrors

Page 18: Physics 014 Images. Topics  Plane mirrors  Spherical mirrors  Thin lenses

Spherical Mirrors

Page 19: Physics 014 Images. Topics  Plane mirrors  Spherical mirrors  Thin lenses

Spherical Mirrors

Extend rays from tip and base of object to determine image location and orientation

Page 20: Physics 014 Images. Topics  Plane mirrors  Spherical mirrors  Thin lenses

Spherical Mirrors

1. Parallel ray reflected through focal point

2. Ray through focal point reflected parallel

3. Ray through center4. Ray reflected symmetrically from c

Page 21: Physics 014 Images. Topics  Plane mirrors  Spherical mirrors  Thin lenses

Thin Lenses

Two types of lenses Converging lenses cause rays to

converge on focal point Diverging lenses cause rays to

diverge from focal point

Page 22: Physics 014 Images. Topics  Plane mirrors  Spherical mirrors  Thin lenses

Thin Lenses

Page 23: Physics 014 Images. Topics  Plane mirrors  Spherical mirrors  Thin lenses

Thin Lenses

Page 24: Physics 014 Images. Topics  Plane mirrors  Spherical mirrors  Thin lenses

Thin Lenses

We may use the same equation we used for mirrors to relate i, p, and f

fip

111

This is not the lens maker’s equation!

Page 25: Physics 014 Images. Topics  Plane mirrors  Spherical mirrors  Thin lenses

Thin Lenses

Page 26: Physics 014 Images. Topics  Plane mirrors  Spherical mirrors  Thin lenses

Thin Lenses

1. Ray initially parallel converge on focal point

2. Ray initially through focal point emerges parallel

3. Ray through center emerges unchanged

Page 27: Physics 014 Images. Topics  Plane mirrors  Spherical mirrors  Thin lenses

Thin Lenses

Page 28: Physics 014 Images. Topics  Plane mirrors  Spherical mirrors  Thin lenses

Thin Lenses


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