Physics Chapter 17:Reflection and Mirrors

Slides:



Advertisements
Similar presentations
Chapter 17.1 Mirrors. Mirrors have been used for thousands of years. Polished metal was used to reflect The usage of today was made possible by Jean Foucault.
Advertisements

Chapter 13: Section 3. Learning Targets Describe the difference between a real and a virtual image Draw ray diagrams for objects located at various distances.
Reflection Light incident upon a boundary between
11.9 Images in Curved Mirrors
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.
18.2 Reflection and Mirrors
Spherical Mirrors Spherical mirror – a section of a sphere of radius R and with a center of curvature C R C Mirror.
1 Reflection and Mirrors. 2 The Law of Reflection “ The angle of incidence equals the angle of reflection.”
There are some mirrors that distort the reflected image. Cosmetic mirrors magnify things, and other mirrors make things look smaller.
Here, we’ll show you how to draw a ray diagram for a concave mirror when the object is outside the center of curvature.
LIGHT AND ITS USES. LIGHT RAY STRAIGHT LINE PATH OF LIGHT.
With Curved Mirrors Forming Images
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.
5.2 Using Mirrors to Form Images
Section 5.3 Images in Curved Mirrors 1.  Concave mirrors have a reflecting surface that curves inward like the inside of a spoon.  Some common uses:
Here, we’ll show you how to draw a ray diagram for a concave mirror when the object is between the center of curvature and the focal point.
Curved Mirrors Chapter 14, Section 3 Pg
Ray Diagrams Basics Mirror Equations
Plane Mirror: a mirror with a flat surface
Reflection & Mirrors. Reflection The turning back of an electromagnetic wave (light ray) at the surface of a substance. The turning back of an electromagnetic.
The amount of reflection depends on how different the media are.
Here, we’ll show you how to draw a ray diagram for a concave mirror when the object is between the focal point and the mirror.
Mirrors and Images. Light Review A luminous object emits light (ex: the sun) An illuminated object reflects light (ex: the moon) For both, light emits/reflects.
Mirrors.
Optics Mirrors and Lenses. Topics for Optics Reflection of LightReflection of Light –Law of Reflection –Plane Mirrors –Concave Mirrors –Convex Mirrors.
Reflection and Mirrors Page 617. Rays Light waves travelling in straight lines.
Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Section 2 Flat Mirrors Chapter 13 Reflection of Light The angle.
Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Section 2 Flat Mirrors Chapter 13 Reflection of Light Reflection.
1 Reflection and Mirrors Chapter The Law of Reflection When light strikes a surface it is reflected. The light ray striking the surface is called.
Mirrors. What is a plane mirror? ● Its a plain mirror! (But called a plane mirror...) ● Its a FLAT and SMOOTH mirror, like many in your home. ● The reflection.
Spherical Mirrors.
Reflection of Light Reflection – the turning back of an electromagnetic wave at the surface of a substance.
While you are watching the video think about why this is happening.
Chapter 17 Objectives: 1) Define the Law of Reflection and use a plane mirror as an example. 2) Differentiate between regular and diffuse reflection. 3)
RAY DIAGRAMS FOR MIRRORS
Concave and Convex Mirrors
What do we know already?. What do we know already?
Curved Mirrors
Web Link: Reflection, Refraction & Diffraction
Aim: How does a light ray interact with different mirrors?
Mirrors.
Curved Mirrors, Ray Diagrams and Nature of Image.
Reflection in Curved Mirrors
Reflection.
Ch. 22 Sec. 3 Reflection & Mirrors
air water As light reaches the boundary between two media,
Reflections in Mirrors
Light in Curved Mirrors
Images formed by Mirrors
4.4 Concave and Convex Mirrors
Chapter 13 Part 4 Reflection, Mirrors, images and Ray diagrams
Millions of light rays reflect from objects and enter our eyes – that’s how we see them! When we study the formation of images, we will isolate just a.
Millions of light rays reflect from objects and enter our eyes – that’s how we see them! When we study the formation of images, we will isolate just a.
Millions of light rays reflect from objects and enter our eyes – that’s how we see them! When we study the formation of images, we will isolate just a.
Waves may reflect diffusely based on…
Light and Reflection Curved Mirrors.
Images in Curved Mirrors
Part 3: Optics (Lenses and Mirrors)
Ray Diagrams for spherical mirrors
Mirrors.
CURVED MIRRORS.
Lesson 2: Reflection and Mirrors Essential Questions:
Science 8 – Mirrors and Lenses ANSWERS
4.4 Images in Curved Mirrors
Reflection Physics Chapter 18a.
Reflection.
Convex Mirrors.
Lenses A lens is a transparent material (with at least one curved side) that causes light refracts in a predictable and useful way. Each ray is refracted.
Light Bouncing Off an Object
Presentation transcript:

Physics Chapter 17:Reflection and Mirrors A smooth surface reflects rays in straight lines and forms a clear image…this is called a specular reflection. Rough surfaces do not reflect rays in straight, parallel lines and does not form a clear image… this is called a diffuse reflection. Image orientation, on a plane mirror, is left-right reversed. Look at a letter e in a mirror to see this orientation.

Curved Mirrors A concave mirror is one that has the shiny side on the inside of the bowl shape. To show how reflections and images occur on mirrors, we show a ray diagram…

Notice the key points of the ray diagram… Notice the key points of the ray diagram…. Principal axis, focal point(C/2), center of curvature(C) , radius of curvature (r), object, image,ray 1 (purple), and ray 2 (green). See the ray-diagram rules on page 473!

Ray Diagram Rules for Real Images https://www.youtube.com/watch?v=tcgT4PcVXNo Link for 3 minute YouTube video on Ray Diagrams. 1 Draw ray 1 parallel to the principal axis, bounce off of the mirror and through the focal point. 2. Draw ray 2 through the focal point, bounce off of the mirror and then parallel to the principal axis. 3. Ray 3 is the principal axis. Your image is between the point where rays 1 and 2 intersect, and the principal ray, for a real image.

Real Image vs Virtual Image A real image, for mirrors, is in front of the mirror, and a virtual image is behind the mirror. Virtual images are upright and usually larger than the object, on curved mirrors. Real images are usually inverted and smaller than the object on curved mirrors. On a flat mirror, the image is virtual and is the same size as the object.

Ray Diagrams with Virtual Images 1. Ray 1 is parallel and through the focal point, but the focal point ray must be extended behind the mirror to meet ray 2. 2. Ray2 is through the focal point and then parallel, but the parallel line must be extended behind the mirror to meet ray 1. 3. The image will be behind the mirror, upright, between the principal ray and the intersection or rays 1&2.

Convex Mirrors A convex mirror is one that has the bottom, or back-side of the bowl mirrored. Convex mirrors ray diagrams….

Ray Diagram for a Convex Mirror