Science w/ Ms. Hendryx 3/27/12. Snell’s Law: Assume the index of air (n 1 ) is 1. Using protractors and a laser pointer, students can calculate the index.

Slides:

Advertisements

Similar presentations

Created by Stephanie Ingle Kingwood High School

Advertisements

Suppose that you hold the transparency in the photograph below in front of a mirror. How will its reflection appear? Is the image: (1) inverted top-to-bottom?

Optics Review #1 LCHS Dr.E.

Physics Light: Geometric Optics 23.1 The Ray Model of Light 23.2 Reflection - Plane Mirror 23.3 Spherical Mirrors 23.5 Refraction - Snell’s law.

Physics 2225: Optics 1 - Activities with Light Rays Purpose of this Minilab Apply the basics of ray tracing to learn about reflection and refraction of.

The Refraction of Light The speed of light is different in different materials. We define the index of refraction, n, of a material to be the ratio of.

Reference Book is Geometric Optics.

Reflection and Refraction. Reflection  Reflection occurs when light bounces off a surface.  There are two types of reflection – Specular reflection.

Images Formed by Refraction

 a  b tan  ~  etc. so  = h / s,  = h / s’,  = h / R Snell’s Law: n a sin  a = n b sin  b n a  a = n b  b  b = ( 

Thin Lenses. Curved Surfaces  Light striking a curved surface is refracted in different directions at the surface.  Some curves will cause light rays.

C F V Light In Side S > 0 Real Object Light Out Side S ’ > 0 Real Image C This Side, R > 0 S < 0 Virtual Object S ’ < 0 Virtual Image C This Side, R

Imaging Science FundamentalsChester F. Carlson Center for Imaging Science The Geometric Optics of Image Formation.

Geometric Optics Ray Model assume light travels in straight line

Refractive index Sections 36, 37 and 38. Refraction: When a wave changes direction as it passes from one medium to another.

Optical microscopy Optics Lenses and image formation Depth of field Numerical aperture Resolution Instrument Specimen preparation Contrast Examples Optics.

Lecture 14 Images Chapter 34. Law of Reflection Dispersion Snell’s Law Brewsters Angle Preliminary topics before mirrors and lenses.

Imaging Science FundamentalsChester F. Carlson Center for Imaging Science Mirrors and Lenses.

1.What is ‘α’ called? 2.What is ‘β’ called? 3.Define the term ‘refraction’ 4.α = 42 o, β = 30 o, v 1 = 7ms -1 and λ 1 = 2m. Using Snell’s law, calculate:

Example: An object 3 cm high is placed 20 cm from (a) a convex and (b) a concave spherical mirror, each of 10 cm focal length. Determine the position.

Module 1-4 Basic Geometrical Optics. Image Formation with Lenses Lenses are at the heart of many optical devices, not the least of which are cameras,

Optics 1 - Activities with Light Rays Purpose of this Minilab Apply the basics of ray tracing to learn about reflection and refraction of light.

Geometric Optics Conceptual Quiz 23.

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

Geometric Optics September 14, Areas of Optics Geometric Optics Light as a ray. Physical Optics Light as a wave. Quantum Optics Light as a particle.

KeyWords: radiation, diagnosis, ultrasound, CAT scanners, endoscopes, non-ionising radiation P3 topic 1 (part i) Radiation in treatment and medicine This.

P5g - Refraction of waves Refraction is…. Refraction.

Reflection and Refraction. Reflection Two laws of reflection Angle of incidence = angle of reflection The angle of incidence, angle of reflection and.

8. Thin lenses Thin lenses are those whose thickness is small compared to their radius of curvature. They may be either converging or diverging. 1) Types.

Light refraction.

Refraction and Lenses Honors Physics.

Light Part 2. Reflection Occurs when waves traveling in one media reach a boundary with another media and bounce back into the first medium Total Reflection.

Geometric Optics This chapter covers how images form when light bounces off mirrors and refracts through lenses. There are two different kinds of images:

Chapter 23. Ray Optics Our everyday experience that light travels in straight lines is the basis of the ray model of light. Ray optics apply to a variety.

Review for Test #1  Responsible for: - Chapters 35 and 36 and section Notes from class - Problems worked in class - Homework assignments  Test.

PHYS 221 Recitation Kevin Ralphs Geometric Optics.

Daily Challenge, 12/21 The distance from the front to the back of your eye is approximately 1.90 cm. If you see a clear image of your physics book when.

Test Corrections Due Tuesday, April 26 th Corrections must be done in a different ink color Lots of 4’s for effort – doesn’t mean answer is right! Check.

4.Example: Multiple mirrors and virtual images: how far away are the virtual images? 1m3m VII. Mirrors.

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

Chapter Refraction: Snell’s Law *When light passes from one medium to another, or from one density to another, it changes speed and its path is bent.

Refraction When light passes from one medium to another, it bends.

Chapter 26 Review (and more test info). Approved Equations The definition of index of refraction, Snell’s Law, and the lens and mirror equations.

The incoming wave travels at 5ms -1 and has a wavelength of 4m. The wave changes its speed once it moves onto a shallower region and as the result its.

Refraction and Snell’s Law Refraction: bending of light at the interface of 2 different materials.

1 Thin Lens Light refracts on the interface of two media, following Snell’s law of refraction: Light bends through a triangular prism: θ 1 and θ 2 are.

Chapter 17 Reflection and Refraction. Ch 17.1 How light behaves at a boundary.

Light: Reflection and Refraction Notes. Index of Refraction In general, light slows somewhat when traveling through a medium. The index of refraction.

Chapter 15 Refraction. Chapter 15 Objectives Law of Refraction Snell’s Law Recognize the sign conventions for refracting surfaces Characterize images.

Today’s agenda: Thin Film Interference.

 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.

Chapter 14.  The brain judges the object location to be the location from which the image light rays originate.

 .  ’’ a    a    ’ + a = 90 Therefore:   =   ’  

Index of Refraction. The ratio of the speed of light in vacuum to the speed of light v in a given material is called the index of refraction, n of the.

Chapter 33 Lenses and Optical Instruments The Thin Lens Equation; Magnification Example 33-2: Image formed by converging lens. What are (a) the.

Speed of light In a vacuum, light travels at a speed of 3 x 10 8 m/s. In any other medium, such as air, water, glass, etc., light travels slower. MaterialSpeed.

Light & Optics Chapters Electromagnetic Wave.

Total Internal Reflection The Endoscope. You will need… A semicircular block A power pack A ray box A single slit A protractor A ruler A pencil.

Refraction and Lenses AP Physics B.

SPHERICAL MIRROR EQUATIONS

Geometric Optics Ray Model assume light travels in straight line

Wavefronts and Snell’s Law of Refraction

Chapter 14 Refraction.

Refraction and Lenses Honors Physics.

Refraction – Snell’s Law

MEASUREMENT OF THE FOCAL LENGTH OF A CONCAVE MIRROR

Refraction and Lenses AP Physics B.

SPHERICAL MIRROR EQUATIONS

Presentation transcript:

Science w/ Ms. Hendryx 3/27/12

Snell’s Law: Assume the index of air (n 1 ) is 1. Using protractors and a laser pointer, students can calculate the index of refraction of Jell-O (n 2 ).

Focal length, f is related to the radius of curvature, R, of a lens of index n via the following equation: Students can measure f, and then verify their result using R and n Jell-O that they have measured. o This is easier than verifying R since there is more error in the focal length measurement.

2-Lens System

Internal reflection