REY DIAGRAMS for THIN LENSES

Slides:

Advertisements

Similar presentations

CONVEX AND CONCAVE LENSES OBJECTIVE: To find the focal point and focal length of convex and concave lens.

Advertisements

(c) McGraw Hill Ryerson Using Lenses to Form Images A lens is a piece of transparent material that can bend, or refract, light rays in useful.

PHY 1371Dr. Jie Zou1 Chapter 36 Image Formation (Cont.)

Refraction (bending light) Refraction is when light bends as it passes from one medium into another. When light traveling through air passes into the glass.

Convex and Concave Lenses

Mirrors & Lenses Chapter 23 Chapter 23 Learning Goals Understand image formation by plane or spherical mirrors Understand image formation by converging.

Convex Lens A convex lens curves outward; it has a thick center and thinner edges.

A. can be focused on a screen. B. can be projected on a wall.

Curved Lenses SNC2P – Optics. Lenses Lenses are thin pieces of glass or plastic that have at least one curved side. There are two basic types of lenses:

02/06/2016 Lenses and Images LO: to be able to describe images formed by different types of lenses Starter: make a list of any items you can think of that.

Today’s agenda: Death Rays. You must know when to run from Death Rays. Refraction at Spherical Surfaces. You must be able to calculate properties of images.

Converging Lenses Section 4.6 Lesson 13. Lenses A lens is a thin transparent piece of glass or plastic that has at least one curved side –The sides can.

LENSES AND THE FORMATION OF IMAGES. Lenses We see the world through lenses… Eye glasses = lenses Contacts = lenses Magnifying glasses = lenses Microscopes.

Lenses Convex lenses converge rays of light. Parallel rays converge a fixed distance away from the lens. This is known as the focal length.

{ Light and Lenses Concave and Convex Lenses. A lens is a transparent object with at least one curved side that causes light to bend. The amount of bending.

Images Formed by Lenses Ray Diagrams for Lenses Ray diagrams can be used to predict characteristics of images using 3 rays, just like for concave.

 A lens is a transparent object with at least one curved side that causes light to refract  Like mirrors, lenses have surfaces that are described as.

Mirrors. Types of mirror There are two types of mirror Plane (flat) Curved Concave (curves in) Convex (curves out)

Geometric Optics: Mirrors and Lenses. Mirrors with convex and concave spherical surfaces. Note that θ r = θ i for each ray.

Lv4: Recap the term refraction. Lv5: Explain why a lens alters the direction of light. Lv6: Analyse how the thickness and shape of a lens alters the light.

Lenses Converging and Diverging Lenses.

Lenses Mirrors reflect. Lenses refract..

While you are watching the video think about why this is happening.

Ch.13 Applications (應用) of Convex Lenses

2 types of lenses just like mirrors

Answer the “4 big questions”.

Physics 7E Prof. D. Casper.

REY DIAGRAMS for THIN LENSES

Images in Lenses.

Properties of lenses.

Lenses and Ray Diagrams

Chapter 13: Lenses and Optical Devices

Notes 23.3: Lenses and Images

Thin Lenses 1/p + 1/q = 1/f 1/f = (n -1) (1/R1 - 1/R2)

Geometric Optics.

Lenses and Ray Diagrams

What Happens When… Light is transmitted through a glass shaped like a triangle? Light is transmitted straight toward a glass shaped like a square?

Thin Lenses-Intro Notes

Chapter 7 Light and Geometric Optics

12.1 – Characteristics of Lenses

12.1 Characteristics of Lenses

Refraction at Spherical Surfaces.

Introduction to Lenses

Lesson P4 Part 2 ~ Lenses & Refraction

Converging Lenses Section 4.6 Lesson 13.

Lenses and Ray Diagrams.

Refraction at Spherical Surfaces.

Characteristics of Lenses

Lenses and Ray Diagrams.

14-2 Thin lenses.

Thin Lenses A lens is a transparent object with two refracting surfaces whose central axes coincide. The common central axis is the central axis of the.

Properties of lenses.

5.3 Using Lenses to Form Images

LENSES A lens is defined as - A ground or molded piece of glass, plastic, or other transparent material with opposite surfaces either or both of which.

Converging lens.

Ch.6 Lens (透鏡).

5.3 Using Lenses to Form Images

5.3: Using Lenses to Form Images

Warm Up 1) In what two ways can refraction be useful?

Using Lenses to Form Images

Lesson P4 Part 2 ~ Lenses & Refraction

Thin Lens Equation 1

5.3: Using Lenses to Form Images

Lenses This Presentation was used for Year 12 students.

5.3 Using Lenses to Form Images

Lenses Refract and Focus Light

Presentation transcript:

REY DIAGRAMS for THIN LENSES This is an example how teacher make presentation for students learning “REY DIAGRAMS” : Evaluation previous students knowledge: Various lens shapes. Converging and diverging lens. (Slide 2) Focal point. Students nows answer. (Slides 3,4) Small problem: We have thin lens and an object. Where is the image located? Teacher to lead, adding qestions for students, discuss. (Slide and animation 6) 3. Experiment: Small problem, students answer, coputers answer. (Slide 7) 4. A few groups take a (simple) question. (Slides 8,9) 5. An answer. (Slide 10)

Various thin lens shapes(nlens>nmedium): Biconvex, plano-convex, concave-convex 1. Converging lenses, 2. Focal length>0, 3. Thickest at the middle Biconcave, plano-concave, convex-concave 1. Diverging lenses, 2. Focal length < 0, 3. Thickest at the edges

FOCAL POINT CONVERGING LENS HOW DOES RAYS DIRECTION AFTER REFRACTING ? Focal point FOCAL POINT CONVERGING LENS

Focal point HOW DOES RAY TRACING AFTER REFRACTING AT THE LENS ? FOCAL POINT DIVERGING LENS

- R2 l p Glass, n>1 Vakuum, n=1 Object R1 C1 F1 F2 C2 Image f Geometry for a thin lens

Object 2f f Image

Eksperiment Object 2f f Image

Group 1 2 3 6 Object Object Object 2f f T Draw rays diagram and Image

Group 4 5 Object Object (2f) F2 F1

6 A answer… Group A T’ T 2f f Author:Branislav Jovanovic Kragujevac Object(Point) Image(Point) T’ 2f f T Author:Branislav Jovanovic Kragujevac E-mail: mpskg@ptt.yu OS: WINDOWS XP(OR LATTER) A answer…