Refraction By: Alicia Fadley. Refraction Refraction- the bending of a wave front as the wave front passes between two substances in which the speed of.

Slides:



Advertisements
Similar presentations
With Lenses Created by Derek J. Wells. Under the expressed written consent of Derek J. Wells in accordance with the rules and by-laws of Derek J. Wells.
Advertisements

Index of Refraction Index of refraction of a material equals the speed of light in a vacuum divided by the speed of light in the material.
Chapter 15 Pretest Light and Refraction
Law of Reflection (Smooth Surface):
Refraction of Light Chapter 18, Section 1.
L 31 Light and Optics-3 Images formed by mirrors
Bellringer What color would a basketball appear to be if under an orange flashlight? What color would it appear to be if under a red flashlight?
Ics Optics Shoreline Ophthalmology ptics Optics   Optics deals with the properties of light and vision   The two principal areas that most concern.
REFRACTION OF LIGHT. REFRACTION THE BENDING OF LIGHT DUE TO A CHANGE IN ITS SPEED.
Content Standard 5 – Contrast ways in which light rays are bent by concave and convex lenses.
Lenses and Mirrors Mrs. Gergel. Lenses and Mirrors Mrs. Gergel.
Pinhole Cameras Converging & Diverging Lenses. Pinhole Image.
Welcome to Optics JEOPARDY PHysics Final Jeopardy Question Reflection Mirrors 100 Lens refraction Special topics.
Wave Interactions.
L 33 Light and Optics [3] images formed by mirrors –plane mirrors –curved mirrors Concave (converging) Convex (diverging) Images formed by lenses the human.
L 33 Light and Optics [3] Measurements of the speed of light  The bending of light – refraction  Total internal reflection  Dispersion Dispersion 
Refraction of Light Light changes direction (bends) as it crosses a boundary between 2 media in which the light moves at different speeds. Amount of refraction.
Refraction and Lens. Refraction Refraction: the change in direction of a wave as it crosses the boundary b/w 2 media in which a wave travels different.
Broadneck Physics Water Corn Syrup Water Vegetable Oil Water.
OBJECTIVE IDENTIFY TYPES OF CORRECTIVE LENSES USED TO CORRECT SIGHT PROBLEMS [COS 5, SAT 10]
18.4 Seeing Light Pg
Refraction and Lenses Light bends--so you can see better!
Notes on Chapter 30 Lenses
Chapter 17/18 Refraction and Lenses. When a ray of light passes from one medium to another it may be reflected, refracted or both.
Refraction and Lenses Light bends--so you can see better!
Refraction. Optical Density  Inverse measure of speed of light through transparent medium  Light travels slower in more dense media  Partial reflection.
Hyperopia and Myopia.
Light Chapter 18.
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.
Chapter 7: Light Figure 7.8 Good APCs: 2, 3, 5, 6, 9, 10, 14, 18, 19, 20, 22, 23, 25, 28, 29, 30, 31, 42, 45, 46, and 48.
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.
Lenses. Applications of Light Refraction What are some common applications of the refraction of light? Cameras Microscopes Lenses Eyeglasses Human eye.
Refraction and Lenses.
1. How is the index of refraction calculated? How is light refracted as it speeds up? How is light refracted as it slows down? Index of refraction = speed.
LENSES Lyzinski Physics. Light Speeds When traveling through a vacuum, light travels at 3 x 10 8 m/s. This is the fastest light ever travels. We shall.
Key Concepts: Light travels in transverse waves Light can be reflected, absorbed, transmitted Parts and functions of the eye.
How do I see color? Photochemical receptors receive the light (____ and _____) Rods-brightness cones-the color They release a ________ signal to the brain.
Sound and LightSection 4 Section 4: Refractions, Lenses, and Prisms Preview Key Ideas Bellringer Refraction of Light Lenses Dispersion and Prisms.
© Houghton Mifflin Harcourt Publishing Company Preview Objectives Refraction of Light The Law of Refraction Sample Problem Chapter 14 Section 1 Refraction.
James T. Shipman Jerry D. Wilson Charles A. Higgins, Jr. Optics and Wave Effects Chapter 7.
The Nature of Light. Light Can Act Like Waves or In 1801 Thomas Young an English scientist did an experiment. –Double slit experiment Passed a beam of.
L 33 Light and Optics [3] images formed by mirrors
Sound and LightSection 4 EQ: How can the phenomena of reflection, refraction, interference, and diffraction be explained?
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. Photon is a bundle of light related to the amount of energy Light travels in straight line paths called light rays
Refraction The bending of waves as they pass from one medium to another.
L 32 Light and Optics [2] Measurements of the speed of light 
Reflection and Refraction
+. + Lenses and Mirrors Mrs. Gergel + Refraction of light When light rays enter a new medium at an angle the change in speed causes them to bend, or.
Refraction of Light Refraction Refraction –Refraction occurs when light waves traveling from one medium to another with a different density bend. –The.
Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Refraction Chapter 14 Table of Contents Section 1 Refraction Section.
Lenses Properties, Characteristics & Ray Diagrams.
Mirrors.
It’s amazing!…Can you imagine life without it?
Chapter 14 Preview Objectives Refraction of Light
Mav Mark What are forms of the electromagnetic spectrum?
Refraction and Lenses. Refraction is the bending of light as it moves from one medium to a medium with a different optical density. This bending occurs.
Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Section 1 Refraction Chapter 14 Refraction of Light The speed of.
Refraction of Light Chapter 18, Section 1. Refraction  When light encounters a transparent or translucent medium, some light is reflected from the surface.
1 REFRACTION OF LIGHT. 2 Chapter 18 Objectives: 1) Define refraction of light including examples. 2) Know which direction a light ray bends as it travels.
Refraction Thin Lenses. Objectives Use ray diagrams to find the position of an image produced by a converging or diverging lens, and identify the image.
A farsighted person’s cornea and lens focus images behind the retina
Refraction and Lenses.
Lenses and Mirrors Mrs. Gergel. Lenses and Mirrors Mrs. Gergel.
LIGHT!.
LIGHT!.
bending of a ray of light
Chapter 15: Refraction.
Light Waves.
Ch 3-3 Notes: Refraction Refraction: the bending of a wave front as the wave front passes b/t two substances in which the speed of the wave differs. -the.
Presentation transcript:

Refraction By: Alicia Fadley

Refraction Refraction- the bending of a wave front as the wave front passes between two substances in which the speed of the wave differs The speed of light is different depending on what the light is traveling through. Light can travel through glass, water, ice, diamonds, and quartz. Light travels through all of these elements at different speeds. Notice that the pencil goes into the water at One point and reappears in the water at another, Making the pencil look broken. This is because the Pencil’s light is refracting in the water.

Lenses and Lenses in Nature Lenses- a transparent object that refracts light rays such that they converge or diverge to create an image The eye works as a lens also. The cornea, which is the transparent part in front of the eye, works like a lens, directing light towards the retina, in the back of the eye. There is also a small lens called the crystalline lens, that also refracts lights.

Different Lenses Convex Lenses Concave Lenses A convex lens can also Be called a converging Lens. A concave lens can also Be called a diverging lens. The focal point of the convex Lens is where the image Focuses. The focal point for a concave Lens is where the rays appear to originate.

Uses of lenses on the Eye Farsighted Farsighted or hyperopia is when the eye focuses the near image behind the retina. Distant images come in clear but near ones are blurry. To correct this, they use a convex lens. When the lens is used, the image will now focus right in front of the back of the eye. Nearsighted Nearsighted or myopia is when the eye tries to focus a far image and is focused in front of the retina. They can see images close but not far. You can fix this by uses a concave lens. This lens will help the eye to focus now farther back in the eye, right in front of the back of the eye.

Examples of Natural Refraction Sun Even when you can no longer see the sun, you can see its light. This is from the refraction, because the light bends around the earth. Mirage A mirage is when the air above the earth is so hot from being heated by the earth that it is warmer than the air at higher elevations.

Dispersion Dispersion- the index of refraction decreases with increasing wavelength. An example of this is when white light passes though a prism. Because of dispersion the colors bend at different amounts making it able to see all six colors. This fan of colors is called a visible spectrum.