Download Reflection - E. R. Greenman

yes no Was this document useful for you?
   Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Document related concepts

Anti-reflective coating wikipedia, lookup

Harold Hopkins (physicist) wikipedia, lookup

Surface plasmon resonance microscopy wikipedia, lookup

Retroreflector wikipedia, lookup

Optical aberration wikipedia, lookup

Photon scanning microscopy wikipedia, lookup

Nonimaging optics wikipedia, lookup

Nonlinear optics wikipedia, lookup

Optical flat wikipedia, lookup

Atmospheric optics wikipedia, lookup

Reflector sight wikipedia, lookup

Birefringence wikipedia, lookup

Optical telescope wikipedia, lookup

Image stabilization wikipedia, lookup

Ray tracing (graphics) wikipedia, lookup

Mirror wikipedia, lookup

Magic Mirror (Snow White) wikipedia, lookup

Physics Chapter 18a
Law of Reflection
Angle of incidence equals angle of reflection
Change in direction of wave at interface between two
Reflecting surface smoothness controls type of reflection
Specular: smooth surface, forms good image
Diffuse: rough surface, does not form good image
The angle of incidence of a light ray is 42o. What are:
The angle of reflection
The angle the incident ray makes with the mirror
The angle between the incident ray and the reflected ray
Plane Mirror
Flat mirror
Forms a virtual image at the same distance that the
object is
Virtual image is upright
Mirror equation: 1/p + 1/q = 1/f
p=object distance
q=image distance
f=focal length
Plane Mirror
Concave Mirror
Concave mirror is curved away from observer
Mirror reference points:
 Optical axis
 Normal at center of mirror
 Also called principal axis
 Focal point
Point on optical axis where every reflected ray
passes through
Focal length: distance from mirror to focal point
(along optical axis)
Concave Mirrors
• Reflections:
• Rays parallel to principal axis reflect through
focal point
• Rays through focal point reflect parallel to
principal axis
• Rays through center (along principal axis)
reflect back along same path
How do we find where an image is?
• Draw carefully!!
How do we find where an image is?
• Draw carefully!!
How do we find where an image is?
• Draw carefully!!