Chapter 14 Section 1: refraction.

Slides:

Advertisements

Similar presentations

An Introduction to Refraction SNC2D. Index of Refraction Light will travel more slowly in more dense materials. The ratio of the speed of light in a vacuum.

Advertisements

Refraction of Light. What is Refraction? Refraction is the bending of light as it travels from one medium to another. Refraction is the bending of light.

Chapter   Reflection is the turning back of light.  All objects reflect some or all of its light.  Refraction is the bending of light.  Transparent.

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

Reflection and Refraction Physics Mrs. Coyle. Reflection When a wave reaches a boundary it is: –Partially reflected (bounces off surface) –Partially transmitted.

The Refraction of Light:. Just what is refraction of light?

Laws of Refraction Incident ray, normal line and refracted ray are in the same plane. Snell’s Law : for light refracting from any one medium to another,

Physics. PHS 5041 Optics Refraction of Light Refraction always occurs simultaneously with some partial reflection Change in direction is with respect.

Light by Rifki Irawan Refraction. Based on how the light behaves as it encounters a substance, substances can be classified into: Transparent substance.

Aim: What happens to the speed of light in different mediums? Do Now: What is the wavelength of yellow light? v = f λ c = f λ 3 x 10 8 m/s = (5.20 x 10.

REFRACTION. REFRACTION OF WAVES Refraction: A change in the direction of waves as they pass from one medium to another, or of water waves as they encounter.

REFRACTION (Bending of Light) Light slows down or speeds up when it enters and leaves another material.

1.To recap ray diagrams 2.To understand the concept of refraction 3.To be able to conduction refractive index calculations Book Reference : Pages

Optics 2: REFRACTION & LENSES. REFRACTION Refraction: is the bending of waves because of the change of speed of a wave when it passes from one medium.

 A change in the direction of light as it moves from one type of substance into another. Figure 14-5 on p. 399 removed for copyright.

Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Refraction Chapter 14 Table of Contents oRefraction and Snell’s Law.

Light Refraction of Light. Learning Objectives You will learn to recall and use the terms used in refraction, including normal, angle of incidence and.

Unit 11 : Part 1 Reflection and Refraction of Light.

Refraction of Light. Refraction  The bending of light as it travels, at an angle, from a material with one refractive index to a material with a different.

Higher Physics – Unit Refraction of Light.

15.1 Refraction pp Mr. Richter. Agenda  Warm-Up  Introduction to Refraction Demo  Reminder: Quarter 3 Ends Friday  Notes:  Refraction 

Reflection and Refraction

Lesson 29 Wave Characteristics of Light. Wave Function for Light v=λν i.For light v = 3.0x108m/s according to Einstein (maybe false now????)

Refraction What do you think? Suppose you are reaching for swim goggles floating below the surface of a pool or trying to net a fish while out in.

Refraction and Snells Law SNC2D Index of Refraction Light will travel more slowly in more dense materials. The ratio of the speed of light in a vacuum.

Define and apply the concept of the index of refraction and discuss its effect on the velocity and wavelength of light.Define and apply the concept.

Chapter 17 Reflection & Refraction. Reflection When light rays bounce back off of a medium boundary.

Refraction Chapter 15. Refraction Refraction: The bending of light as it travels from one medium to another Refraction occurs when light’s velocity changes.

© Houghton Mifflin Harcourt Publishing Company Preview Objectives Refraction of Light The Law of Refraction Sample Problem Chapter 14 Section 1 Refraction.

Refraction. Refraction is the bending (change in direction) of light when it travels from one medium into another. Caused by a change in speed Refraction.

Refraction & Lenses Chapter 18. Refraction of Light n Look at the surface of a swimming pool n Objects look distorted n Light bends as it goes from one.

Refraction (Slowing Down) When a wave passes into a medium that makes it slow down, the wave will bend toward the normal Air Water.

the change of direction of a ray of light as it passes obliquely from one medium into another of different transmission speed.

Refraction of Light When can light “bend”?.

How Light Behaves at a Boundary

Refraction The bending of light due to a change in speed.

Refraction occurs when light waves bend as they are passing from one medium to another. Causes a change in: Causes a change in: – Speed – Wavelength –

Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Refraction Chapter 14 Table of Contents Section 1 Refraction Section.

Law of Refraction Take notes on the first 2 slides Follow the videos for the last 4 slides.

Refraction. Have you ever seen this? Refraction of Light When light travels through a surface between two different media, the light will be refracted.

Chapter 14 Preview Objectives Refraction of Light

When light travels from one material to another it usually changes direction The bending of light that occurs at the borderline of two materials is called.

Chapter 7 Light and Geometric Optics. 7.3 Refraction of Light.

Refraction of Light Optical density a property of a transparent material that is an inverse measure of the speed of light through a material Optical refraction.

Chapter 26 The Refraction of Light: Lenses and Optical Instruments.

What happens when light enters a transparent medium (e.g. water)?

Refraction Chapter 12 (p ). Refraction Refraction: The bending or change in direction of light when it travels at an angle from one medium into.

Refraction Contents: Index of refraction Whiteboard.

The Refraction of Light, the Index of Refraction, and Snell’s Law

DO NOW What is the color of a light wave with a frequency of 5.65 x Hz?

REFRACTION Physics Chapter 18b. Refraction Bending rays of light as it passes from one medium to another Caused by change in speed of wave Amount of refraction.

Reflection & Refraction Learning Targets: L3: Reflection L4: Refraction – Definition and Ray Dig L5: Critical Angle & Total Internal Reflection L6: Snell’s.

Refraction. When light moves from one medium to another the path of the light changes at the boundary between the substances. This change in path is known.

Refraction and Lenses. Objectives Recognize situations in which refraction will occur. Identify which direction light will bend when it passes from one.

REFRACTION OF LIGHT. BEHAVIOR OF LIGHT Light acts both as a wave and as a particle Called a “wavicle” Light needs to interact with a surface in order.

Happy Tuesday! Get ready for warm up #4 Get out paper for notes. Title them: “Snell’s Law and Refraction” Essential Question: What is Snell’s Law?

Chapter 17 Reflection and Refraction. Objectives 17.1 Explain the law of reflection 17.1 Distinguish between diffuse and specular reflection 17.1 Calculate.

Week 4/5- REFRACTION.

Refraction Chapter 14: Section 1.

Reflection & Refraction

Reflection and Refraction

Physics Section 14-1 Refraction.

Chapter 14 Refraction.

Physics Projects Color wheel Types of mirrors and uses

REFRACTION OF LIGHT.

Presentation transcript:

Chapter 14 Section 1: refraction

Objectives Recognize situations in which refraction will occur. Identify which direction light will bend when it passes from one medium to another. Solve problems using Snell’s law.

Refraction of light The bending of light as it travels from one medium to another is call refraction. As a light ray travels from one medium into another medium where its speed is different, the light ray will change its direction unless it travels along the normal. Frequency remains constant. Velocity changes as a result of wavelength change. Simulations http://www.walter-fendt.de/ph14e/refraction.htm ******* http://www3.interscience.wiley.com:8100/legacy/college/halliday/0471320005/si mulations6e/index.htm

refraction

Refraction of light Refraction can be explained in terms of the wave model of light. The speed of light in a vacuum, c, is an important constant used by physicists. Inside of other mediums, such as air, glass, or water, the speed of light is different and is usually less than c.

refraction Less Rigid Medium More Rigid Refracted ray bends towards the normal.

Angle of refraction The angle between the refracted ray and the normal

Law of refraction An important property of substances is the index of refraction The index of refraction for a substance is the ratio of the speed of light in a vacuum to the speed of light in that substance.

Indices of Refraction for Various Substances

indices Vacuum 1.00 Air 1.0003 Water 1.33 Ethanol 1.36 Crown glass 1.52 Quartz 1.52 Diamond 2.42

Law of refraction When light passes from a medium with a smaller index of refraction to one with a larger index of refraction (like from air to glass), the ray bends toward the normal. When light passes from a medium with a larger index of refraction to one with a smaller index of refraction (like from glass to air), the ray bends away from the normal. Note:The speed of light has a lower speed in a more optically dense medium

example What is the speed of light in quartz? Answer: 1.97 x 10 8 m/s

Law of refraction Objects appear to be in different positions due to refraction. Snell’s Law determines the angle of refraction

Snell’s law Snell’s Law A light ray of wavelength 589 nm (produced by a sodium lamp) traveling through air strikes a smooth, flat slab of crown glass at an angle of 30.0º to the normal. Find the angle of refraction, r.

solution Snell’s Law Given: i = 30.0º ni = 1.00 nr = 1.52 Unknown: r = ? Use the equation for Snell’s law.

video Lets watch some videos

Student guided practice Do problems 1-3 in your book page 487

Homework Do worksheet