25.4: Spherical Mirrors. Concave Mirror Light rays near and parallel to the principal axis are reflected from a concave mirror and converge at the focal.

Slides:

Advertisements

Similar presentations

Learning Outcome Draw a ray diagram to find the position, nature and size of the image produced by a concave and convex mirrors.

Advertisements

Reflection at a Spherical Surface

1 Geometric optics Light in geometric optics is discussed in rays and represented by a straight line with an arrow indicating the propagation direction.

Section 3 Curved Mirrors

TOC 1 Physics 212 and 222 Reflection and Mirrors What do we see? Law of Reflection Properties of Spherical Mirrors Ray Tracing Images and the Equations.

SPHERICAL MIRRORS Free powerpoints at

A wave front consists of all points in a wave that are in the same phase of motion. A wave front is one of many properties that light waves share with.

 Mirrors that are not flat are called curved mirrors.  Depending on whether the reflective coating is on the inside or outside of the curve will decide.

Reflection of Light. When light rays hit an object, they change direction. The type of surface the light encounters determines the type of reflection.

Curved Mirrors.

Curved Mirrors Chapter 13 Section 3. Mirror Terminology  Ccenter of curvature  Rradius of curvature.

Curved Mirrors.

Chapter 25. The Reflection of Light: Mirrors

Chapter 25. Mirrors and the Reflection of Light Our everyday experience that light travels in straight lines is the basis of the ray model of light. Ray.

Physics 110G Light TOC 1 What do we see? Law of Reflection Properties of Spherical Mirrors Ray Tracing Images and the Equations.

Physics Mechanics Fluid Motion Heat Sound Electricity Magnetism Light.

Curved Mirrors and Ray Diagrams SNC2D. Concave Mirrors A concave mirror is a curved mirror with the reflecting surface on the inside of the curve. The.

Formation of Images by Spherical Mirrors

Concave Mirrors A concave spherical mirror a mirror whose reflecting surface is a segment of the inside of a sphere. Concave mirrors are used to magnify.

Geometrical Optics (Lecture II)

Curved Mirrors The most common type of curved mirror is a spherical mirror A spherical mirror has the shape of a section from the surface of a sphere.

Mirrors and Lenses Physics Spring 2002.

Spherical Mirrors Spherical mirror – a section of a sphere of radius R and with a center of curvature C R C Mirror.

SPHERICAL MIRRORS. Curved Mirrors  Curved mirrors are also called spherical mirrors because they are part of a sphere (ball)  a portion of the sphere.

Formation of Images by Spherical Mirrors. For an object infinitely far away (the sun or starts), the rays would be precisely parallel.

CONCAVE AND CONVEX MIRRORS

Mirrors and Lenses.

Chapter 18 Mirrors and Lenses Mirrors A. Objects and Images in Plane Mirrors. A. Objects and Images in Plane Mirrors. B. Concave Mirrors. B. Concave.

Chapter 25 The Reflection of Light: Mirrors Wave Fronts and Rays A hemispherical view of a sound wave emitted by a pulsating sphere. The rays are.

Chapter 14 Light and Reflection

Spherical Mirrors Alfano I: Year 4.

 Mirrors that are formed from a section of a sphere.  Convex: The reflection takes place on the outer surface of the spherical shape  Concave: The.

Ray Diagrams for spherical mirrors. Finding the focal point Center of Curvature (C)- if the mirror actually was a sphere, this is the center of that sphere.

 As you come in  Get one of each mirror type  Complete the following  What is different about the mirrors?  What do you notice about the images each.

Can YOU determine the general characteristics of the “image” 1.Its location (closer than, further than or the same distance as the object and the mirror)

Chapter 25 The Reflection of Light: Mirrors. LAW OF REFLECTION The incident ray, the reflected ray, and the normal to the surface all lie in the same.

Chapter 18-1 Mirrors. Plane Mirror a flat, smooth surface light is reflected by regular reflection rather than by diffuse reflection Light rays are reflected.

The Reflection of Light: Mirrors

AP Physics Chp 25. Wavefronts – location of the same point for the same phase of the wave Rays – perpendicular to the wavefront Plane waves – all rays.

Chapter 36 Image Formation (Lens and Mirrors) Using the ray approximation of geometric optics, we can now study how images are formed with mirrors and.

Plane Mirror Suppose we had a flat , plane mirror mounted vertically. A candle is placed 10 cm in front of the mirror. WHERE IS THE IMAGE OF THE CANDLE.

3/4/ PHYS 1442 – Section 004 Lecture #18 Monday March 31, 2014 Dr. Andrew Brandt Chapter 23 Optics The Ray Model of Light Reflection; Image Formed.

Light and Reflection Curved Mirrors. Concave Spherical Mirrors Concave spherical mirror – an inwardly curved, spherical mirrored surface that is a portion.

Properties of Reflective Waves Curved Mirrors. Image close to a concave mirror appear:

Curved Mirrors Chapter 14, Section 3 Pg

Mirror Equation Ray diagrams are useful for determining the general location and size of the image formed by a mirror. However, the mirror equation and.

AP Physics IV.C Geometric Optics. Wave Fronts and Rays.

SPHERICAL MIRRORS. Curved Mirrors  Curved mirrors are also called spherical mirrors because they are part of a sphere (ball)  a portion of the sphere.

Reflection & Mirrors. Reflection The turning back of an electromagnetic wave (light ray) at the surface of a substance. The turning back of an electromagnetic.

Reflection of Light. Reflectance u Light passing through transparent medium is transmitted, absorbed, or scattered u When striking a media boundary, light.

Principal axis FCC Image Characteristics Real Inverted f < d i < 2f h i < h o Any incident ray parallel to the principal axis will reflect through the.

Unit 8 – Curved Mirrors. Unit 8 – Concave Spherical Mirror Concave spherical mirror: a mirror whose reflecting surface is a segment of the inside of a.

Calculate distances and focal lengths using the mirror equation for concave and convex spherical mirrors. Draw ray diagrams to find the image distance.

Chapter 18 Mirrors and Lenses. Curved Mirrors Concave shaped mirrors cause parallel light rays to converge. Convex shaped mirrors cause parallel light.

Today’s agenda: Plane Mirrors. You must be able to draw ray diagrams for plane mirrors, and be able to calculate image and object heights, distances, and.

A light beam striking a boundary between two media can be partly transmitted and partly reflected at the boundary.

PHY 102: Lecture Wave Fronts and Rays 9.2 Reflection of Light

RAY DIAGRAMS Steps for drawing a plane mirror ray diagram: 1. A ray that strikes perpendicular to the mirror surface, reflects perpendicular to the mirror.

Lecture 2: Reflection of Light: Mirrors (Ch 25) & Refraction of Light: Lenses (Ch 26)

The Reflection of Light: Mirrors

Mechanics Fluids Sound Heat Electricity Magnetism Light

The Reflection of Light: Mirrors

Light and Reflection Curved Mirrors.

Spherical Mirrors: concave and convex mirrors.

Chapter 13 Light and Reflection

The Reflection of Light: Mirrors

The Reflection of Light: Mirrors

The Reflection of Light: Mirrors

The Reflection of Light: Mirrors

Presentation transcript:

25.4: Spherical Mirrors

Concave Mirror Light rays near and parallel to the principal axis are reflected from a concave mirror and converge at the focal point F. The focal length f is the distance between F and the mirror.

Focal Length and Radius The focal length f is one-half of the radius R.

Focal Point and Focal Length of a Concave Mirror

Convex Mirror

Spherical Aberration Rays that are far from the principal axis do not converge to a single point after reflection from the mirror. This is known as spherical aberration and it is corrected with parabolic mirrors.

Parabolic Mirrors This long row of parabolic mirrors focuses the sun’s rays to heat an oil-filled pipe located at the focal point of each mirror.

Automobile Headlights Automobile headlights use parabolic mirrors. In a headlight, a high-intensity light bulb is placed at the focal point of the mirror, and light emerges parallel to the principal axis.

Ray Tracing for Concave Mirror Ray 1.This ray is initially parallel to the principal axis and, therefore, passes through the focal point F after reflection from the mirror. Ray 2.This ray initially passes through the focal point F and is reflected parallel to the principal axis. Ray 2 is analogous to ray 1 except that the reflected, rather than the incident, ray is parallel to the principal axis. Ray 3.This ray travels along a line that passes through the center of curvature C and follows a radius of the spherical mirror; as a result, the ray strikes the mirror perpendicularly and reflects back on itself.

25.6. The Mirror Equation and the Magnification Equation

Derivation

A Real Image Formed by a Concave Mirror A 2.0-cm-high object is placed 9.0 cm from a concave mirror whose radius of curvature is 12 cm. Find (a) the location of the image and (b) its size (c) draw a ray diagram.

Shaving or Makeup Mirror

Ray Tracing for a Convex Mirror Ray 1.This ray is initially parallel to the principal axis and, therefore, appears to originate from the focal point F after reflection from the mirror. Ray 2.This ray heads toward F, emerging parallel to the principal axis after reflection. Ray 2 is analogous to ray 1, except that the reflected, rather than the incident, ray is parallel to the principal axis. Ray 3.This ray travels toward the center of curvature C; as a result, the ray strikes the mirror perpendicularly and reflects back on itself.