# Ppt on refraction of light through prism

##### Convex and Concave Lenses A lens is a piece of transparent material, such as glass or plastic, that is used to focus light and form an image. Types of.

eliminates the peripheral colors, or chromatic aberration, that can form on images. Refracting Telescopes Section 18.3 Binoculars, like telescopes, produce magnified images of faraway objects. Each side of the binoculars is like a small telescope: light enters a convex objective lens, which inverts the image. The light then travels through two prisms that use total internal reflection to invert the image again, so that the viewer/

##### OBJ 5 Series Circuits Series circuits are the type of circuits that most Christams tree lights have. If one bulb goes out, all the bulbs go out. Series.

refract light just like prisms. The refraction of the different wavelengths can cause white light from the sun to separate into different colors (red, orange, yellow, green, blue, indigo, and violet.) The refraction of the different wavelengths can cause white light from the sun to separate into different colors (red, orange, yellow, green, blue, indigo, and violet.) Mirages A mirage is an image of a distant object produced by the refraction of light through/

##### THE POLARIZATION OF LIGHT The electromagnetic theory, Specifically requires that the vibrations be traverse, being therefore entirely confined to the plane.

of incidence is a principal section as shown in Fig.8. POLARIZATION BY DOUBLE REFRACTION The polarization of light by double refraction in calcite was discovered by Huygens in 1678. He sent a beam of light through two crystal as shown at the top of / O x X’ Fig.11 REFRACTION BY CALCITE PRISM Calcite prisms are sometimes cut from crystals for the purpose of illustrating double refraction and dispersion simultaneously as well as refraction along the optic axis. Two regular prisms of calcite are shown in Fig.12/

##### 3 Refraction of light 3.1 Refraction of light 3.2 Laws of refraction 3.3 Snell’s law and refractive index 3.4 Refraction through a block 3.5 Refraction.

3 Refraction of light 3.1 Refraction of light 3.2 Laws of refraction 3.3 Snell’s law and refractive index 3.4 Refraction through a block 3.5 Refraction through a prism 3.6 Real depth and apparent depth 3.7 Total internal reflection and critical angle 3 Refraction of light 3.8 Total internal reflection in prisms 3.9 Optical fibres 3.10 Formation of a mirage Summary When light travels from one medium to another, it is/

##### UNIT 4 Chapter 10: Light and Reflection Chapter 11: Refraction Chapter 12:Lenses and Lens Technology Light and Geometric Optics.

and Mirages Copyright © 2010 McGraw-Hill Ryerson Ltd. Shimmering and mirages are caused by the refraction of light in unevenly heated air. Shimmering is the apparent movement of objects in hot air over objects and surfaces. A mirage is an optical effect caused by the refraction of light rays passing through layers of air that have very different temperatures. Mirages are most often seen in a very hot desert/

##### 1 The Nature of Light and the Laws of Geometric Optics.

material. The incident beam makes an angle of 40.0° with the normal, and the refracted beam makes an angle of 26.0° with the normal. Find the index of refraction of the material. Solution :Using Snell’s law of refraction 15 Dispersion and Prism The index of refraction varies with the wavelength of the light passing through a material. This behaviour is called dispersion (light of different wavelengths is bent at different angles when Incident/

##### Physics 1C Lecture 25B. Mirages Mirages occur because of total internal reflection (TIR). Hot air is less dense than cool air. The less dense hot air.

after passing completely through the front and back sides of the prism? A) The light ray would still be deflected downward. B) The light ray would now be deflected upward. C) The light ray would not be deflected (it would move in the same direction that it had originally). Dispersion The index of refraction in anything except a vacuum depends on the wavelength of the light. The dependence of n on/

##### PROPERTIES OF VISIBLE LIGHT Section 4.2. Objectives By the end of the lesson you should be able to: Explain the wave model of light Explain the difference.

one colour from the spectrum and pass the white light through the prisms, the recombined light is no longer white! (Fig 4.15, pg 147) Newton’s Conclusion Newton showed that colour was a property of visible light. He proposed that white light (like sunlight) is the result of mixing together all the different colours of light Colour and Reflection What was REFRACTION again? Then what do you think REFLECTION is/

##### Chapter 35: The Nature of Light and the Principles of Ray Optics Reading assignment: Chapter 35 and selections of chapter 34 Homework 35.1 (due Monday,

sky Violet is bend the most and reaches the eye of the observer from lower in the sky. The index of refraction for violet light in silica flint glass is 1.66, and that for red light is 1.62. What is the angular spread of visible light passing through a prism of apex angle 60.0° if the angle of incidence is 50.0°? White Board example Review Extra Slides/

##### Light and electromagnetic waves 4 th form IGCSE Textbook: Chapters 13 & 12.

refraction of light, using rectangular blocks, semicircular blocks and triangular prisms 3.18 recall and use the relationship between refractive index, angle of incidence and angle of refraction: 3.19 describe an experiment to determine the refractive index of glass, using a glass block 3.20 describe the role of/ causes water and fat molecules to rotate rapidly This causes heating Microwaves cannot pass through metal – Metal case and grid in door prevent them from escaping superheating Infrared radiation/

##### 17.1 Reflection and Refraction. Chapter 17 Objectives  Describe the functions of convex and concave lenses, a prism, and a flat mirror.  Describe how.

.376  r = sin -1 (0.376) = 22 o Calculating the angle of refraction A ray of light traveling through air is incident on a smooth surface of water at an angle of 30° to the normal. Calculate the angle of refraction for the ray as it enters the water. 17.1 Dispersion and prisms  When white light passes through a glass prism, blue is bent more than red.  Colors between blue and red/

##### Chapter 22 Reflection and Refraction ofLight. A Brief History of Light 1000 AD 1000 AD It was proposed that light consisted of tiny particles It was proposed.

normal Law of Reflection, cont The angle of reflection is equal to the angle of incidence The angle of reflection is equal to the angle of incidence θ 1 = θ 1 ’ θ 1 = θ 1 ’ Refraction of Light When a ray of light traveling through a transparent medium encounters a boundary leading into another transparent medium, part of the ray is reflected and part of the ray enters the second medium When a ray of light traveling through a transparent/

##### Chapter 22 Reflection and Refraction ofLight. A Brief History of Light 1000 AD 1000 AD It was proposed that light consisted of tiny particles It was proposed.

normal Law of Reflection, cont The angle of reflection is equal to the angle of incidence The angle of reflection is equal to the angle of incidence θ 1 = θ 1 ’ θ 1 = θ 1 ’ Refraction of Light When a ray of light traveling through a transparent medium encounters a boundary leading into another transparent medium, part of the ray is reflected and part of the ray enters the second medium When a ray of light traveling through a transparent/

##### Let’s Review Reflect-to bounce off a surface

activity. What appears on the board when you shine the light through the prism? Let’s Discuss On the opposite side of your note card, draw a rainbow with the colors in the correct order. Write a short summary, 2-3 sentences, of what you learned about rainbows and refraction. Let’s Discuss What is reflection, refraction, and absorption? What is translucent, transparent, and opaque? How is/

##### Optics Reflection Diffuse reflection Refraction Index of refraction

submerged in water? Chromatic Aberration Examples Chromatic Aberration Achromatic Lens As in a raindrop or a prism, different wave-lengths of light are refracted at different angles (higher frequency ↔ greater bending). The light passing through a lens is slightly dispersed, so objects viewed through lenses will be ringed with color. This is known as chromatic aberration and it will always be present when a single lens is/

##### Reflection of Light Electrons in a material respond to light striking the material Electrons in a material respond to light striking the material The energy.

High frequencies travel slower than low frequencies Dispersion Dispersion through a Prism Dispersion though a Prism Rainbows Rainbows Rainbows Rainbows Total Internal Reflection At an interface, when light is going from a region of high refractive index (lower speed) to lower index, the light is bent away from the normal At an interface, when light is going from a region of high refractive index (lower speed) to lower index, the/

##### Light 10th Grade - Physics.

Grade - Physics Module Objectives Refraction through a prism Dispersion Recombination Uses of spectroscope Raman effect Light - Recap Light is a form of energy Travels in straight lines Refraction is due to change in velocity Refractive index of a medium = velocity of light in vacuum : velocity of light in medium Composite light splits into its constituent colors, when passed through a prism Rainbow is a spectrum formed in nature Difference in refractive index Causes illusional bend in straight object/

##### Falcon Focus Use the graph to answer #1 (8-5.1) What is the average speed of the ball? 2 m/s 6 m/s 8 m/s 72 m/s.

will bend. Refraction of light going from air through a convex lens, for example, can make images appear larger as the light waves bend. Examples: Prism, Magnifying Glass, Convex lenses, Glasses, Drop of water on letters, Anything that is being magnified Refraction Prisms or diffraction gratings separate white light into its different components or colors by bending the light at different angles depending on the frequencies of the light passing through the prism or diffraction/

##### Chapter 35: The Nature of Light and the Principles of Ray Optics Reading assignment: Chapter 35 Homework 35.1 (due Tuesday, April 14): OQ2, OQ4, OQ5,

sky Violet is bend the most and reaches the eye of the observer from lower in the sky. The index of refraction for violet light in silica flint glass is 1.66, and that for red light is 1.62. What is the angular spread of visible light passing through a prism of apex angle 60.0° if the angle of incidence is 50.0°? White Board example Total Internal Reflection/

#####  The speed of light in a vacuum is always the same.  but when light moves through any other medium it travels more slowly since it is constantly being.

the dispersion.  In most liquids and solids the speed of light, and hence the index of refraction, varies significantly with wavelength.  (This variation is referred to as dispersion, and it is what causes white light moving through a prism to be refracted into a rainbow. Shorter wavelengths are normally refracted more than longer ones.)  If the light source is not monochromatic, light gets dispersed and shadow boundary is not well defined/

##### Physics 1502: Lecture 29 Today’s Agenda Announcements: –Midterm 2: Monday Nov. 16 … –Homework 08: due Friday Optics –Index of Refraction.

light from a laser in one room to an experiment in another. Which makes a better fiber, the one in water ( I ) or the one in air ( II ) ? a)  Water b)  Air Problem You have a prism that from the side forms a triangle of sides 2cm x 2cm x 2  2cm, and has an index of refraction of/ (ie small angles of incidence close to a single axis): First draw a ray (light blue) from the tip of the arrow through the center of the sphere. This ray is reflected straight back since the angle of incidence = 0. /

#####  Sometimes when you look out a window, you see what is outside as well as your own reflection  This is because some light reflects and some light refracts.

the direction that it came from  When the angle of incidence into the prism is not 0°, the light will be refracted  After the light has reflected off both inner short sides and then leaves the prism, it will refract at the same angle  Binoculars ◦ The direction of light is reflected twice in binoculars by prisms to make the path of the light longer ◦ Need to extend the path due to the/

##### Chapter 29 – Reflection & Refraction

and bend at different angles When light is bent twice at nonparallel boundaries, as in a prism, the seperation of the different colors is apparent Dispersion – the separation of light into colors arranged according to their frequency Dispersion in a Prism Reflection & Refraction Section 29.11—The Rainbow The Rainbow The rainbow takes the concept of dispersion and multiples it through the atmosphere The sun shines on water droplets/

##### Light and Optics Light and Optics 6.P.1.2 Students will explain the relationship between visible light, the electromagnetic spectrum, and sight.

Red, Orange, Yellow, Green, Blue, Indigo, and Violet) PrismPrism: a transparent solid body, often having triangular bases, used for dispersing light into a spectrum or for reflecting rays of light. Prism  Different colors of light bend at different angles when passing through a prism. Prism Activity  White light is part of the visible spectrum which happens to be made up of many different colors.  When light travels it may collide with different molecules and/

##### Lenses and the Refraction of Light. 26.1 The Index of Refraction Light travels through a vacuum at at c Light travels through materials such as water.

the Refraction of Light 26.1 The Index of Refraction Light travels through a vacuum at at c Light travels through materials such as water or glass at a speed less than c. Light will bend, or refract, if it enters a medium with a different speed. It may reflect as well. The amount of bending is quantified by the index of refraction. The index of refraction of a material is the ratio of the speed of light in a/

##### Instruments for investigation and correction of the human eye disorders Department of medical physics of diagnostic and treatment equipment I. Ya. Horbachevsky.

12-14mm) May be graduated to allow measurement Narrow slits are used to “slice” through the cornea to determine depth or thickness Wide slits are used to inspect surfaces Definition: /of light emanating from the angle. DIRECT Gonioscopy: The anterior curve of the goniolens is such that the critical angle is not reached, and light rays are refracted at the contact lens- air interface EG: Koeppe, Shaffer, Layden, Barkan, Thorpe, Swan Jacob. INDIRECT Gonioscopy: The light rays are reflected by a mirror/ prism/

##### 2 nd & 3 th N.U.T.S. Workshops Gulu University Naples FEDERICO II University 2 – Reflection, Refraction.

same plane The angle of refraction, θ 2, depends on the properties of the two media (the refractive index of media n 1, n 2 related to speed of light in the media) Refraction of Light - 2 2- Reflection, Refraction 2nd & 3th NUTS Workshop ( Jan 2010) 28 The angle of refraction depends upon the two materials and the angle of incidence The path of the light through the refracting surface is reversible Refraction occurs because the speeds of light, v 1 and/

##### THE HUMAN EYE AND THE COLOURFUL WORLD 1.The Human Eye 2.The Parts and their Functions of a Human Eye 3.Power of Accommodation, LDDV and Far Point 4.Defects.

and convex lenses. The upper portion is concave for distant vision and the lower portion is convex for near vision. N1N1 N2N2 Eye A Refracting Surfaces Prism i e REFRACTION OF LIGHT THROUGH A TRIANGULAR PRISM - Activity Q P S R Refraction of Light through Prism A Refracting Surfaces Prism i δ A BC e Or1r1 r2r2 N1N1 N2N2 D μ Q P S R i + e = A + δ δ i 0 i = e δmδm μ = sin (A/

##### 30 Lenses An electromagnetic wave is composed of oscillating electric and magnetic fields that regenerate each other. 37.8 Electromagnetic Waves.

from water into air, the rays bend away from the normal. The light paths are reversible for both reflection and refraction. If you can see somebody in a reflective or refractive device, such as a mirror or a prism, then that person can see you by looking through the device also. 29.8 Refraction of Light 30 Lenses The laser beam bends toward the normal when it enters/

##### CHAPTER 35 : THE NATURE OF LIGHT AND THE LAWS OF GEOMETRIC OPTICS 35.1) The Nature of Light Light – A stream of paticles that either was emitted by the.

v 2 = c/n 2 : Snell’s law of refraction 35.7) Dispersion and Prisms An important property of the index of refraction is that, for a given material, the index varies with the wavelength of the light passing through the material – Figure (35.20) This behavior is called dispersion Because n is a function of wavelength, Snell’s law of refraction indicates that light of different wavelengths is bent at different angles when/

##### RAY OPTICS - II 1.Refraction through a Prism 2.Expression for Refractive Index of Prism 3.Dispersion 4.Angular Dispersion and Dispersive Power 5.Blue Colour.

.Compound Microscope 7.Astronomical Telescope (Normal Adjustment) 8.Astronomical Telescope (Image at LDDV) 9.Newtonian Telescope (Reflecting Type) 10.Resolving Power of Microscope and Telescope Created by C. Mani, Principal, K V No.1, AFS, Jalahalli West, Bangalore Refraction of Light through Prism: A Refracting Surfaces Prism i δ A BC e O P Q r1r1 r2r2 N1N1 N2N2 D In quadrilateral APOQ, A + O = 180° …….(1) (since N/

##### Lecture 21 Nature of Light Reflection and Refraction Dispersion and Prisms Total internal Reflection.

normal Fig. 22-1, p.728 Fig. 22-2a, p.728 Law of Reflection, cont The angle of reflection is equal to the angle of incidence θ 1 = θ 1 ’ Demo Refraction of Light When a ray of light traveling through a transparent medium encounters a boundary leading into another transparent medium, part of the ray is reflected and part of the ray enters the second medium The ray that enters the second/

##### VCE Physics Unit 2 Topic 2 Wave Like Properties of Light View physics as a system of thinking about the world rather than information that can be dumped.

and the particle model of light in terms of whether they adequately describe reflection and refraction. Identify visible light as a particular region of the spectrum of electromagnetic radiation and that all light travels at the speed of light in a vacuum, c. Explain the colour components of white light as different frequencies of light combining to appear white. Explain colour dispersion in prisms and lenses in terms of refraction of the components of white light as they pass from/

##### 12 Lecture in physics Homework wave nature of light Optical instruments Theory of Relativity Quantum Theory and Models of Atom Quantum Mechanics of Atoms.

computed using the apex angle and the angle of minimum deviation.opticsoptical prism geometrical triangular prismoptical prism dispersespectralcolors rainbowrefraction refractive indexspectrometerminimum deviation A good mathematical description single-prism dispersion is given by Born and Wolf The case of multiple-prism dispersion is treated by Duarte.BornWolfDuarte Prism dispersion played an important role in understanding the nature of light, through experiments by Sir Isaac Newton and others.Sir Isaac/

#####  Speed of light (in vacuum) Foucault’s experiment.

 3 = 90  -   = 90  -  2   3 = 60  -  2 Example:  1 = 30   o =  o Prism example Prism  Applications of prism A prism and the total reflection can alter the direction of travel of a light beam. All hot low-pressure gases emit their own characteristic spectra. A prism spectrometer is used to identify gases. Diversion  Diversion The index of refraction of a material depends on wavelength as shown on the right. This is called/

##### © Boardworks Ltd 2003 Light : What is Light? Light carries energy and travels as a wave. Light travels at 300 000 000 m/s or 300 000 km/s (much faster.

as the object is in front. The image in a plane mirror is the same size as the object. angle of incidence =angle of reflection ¡ =r © Boardworks Ltd 2003 Refraction © Boardworks Ltd 2003 Refraction : Bending light The speed of light waves depends on the material they are travelling through. If the light waves enter a different material [e.g. from glass into air] the speed changes. This causes the/

##### Refraction of Light Done by: Stephen Chow 3P304. Agenda 5 technologies of Refraction Of Light Cherenkov Radiation Binoculars AIST innovations: Flat-Plate.

: Stephen Chow 3P304 Agenda 5 technologies of Refraction Of Light Cherenkov Radiation Binoculars AIST innovations: Flat-Plate Lens Princeton Novel Semiconductor Structure Spectacles Cherenkov Radiation Cherenkov Radiation is an electromagnetic radiation emitted when a charged particle (such as an electron) passes through an insulator at a constant speed greater than the speed of light in that medium. The characteristic blue glow of nuclear reactors is due to Cherenkov/

##### Sound and LightSection 4 EQ: How can the phenomena of reflection, refraction, interference, and diffraction be explained?

its speed is higher, the ray is bent away from the normal. Sound and LightSection 4 16-4-4 Refraction of Light, continued Refraction makes objects appear to be in different positions. Sound and LightSection 4 Refraction Sound and LightSection 4 Lenses What happens when light passes through a lens? Sound and LightSection 4 16-4-5 Lenses lens: a transparent object with a curved surface that/

##### Light and Optics Nature of Light. Light In order to do justice to a light and optics unit, we have to first look at the different sources of light!

and microscopes have their limitations, which reveal the nature of light. The Source of Colours Topic 6 Prism: Rainbow Effect In the 17th century, Sir Isaac Netwon conducted a famous experiment. He placed a prism so that a thin beam of white light could pass through it. When white light travelled through the prism, Newton saw bands of colour emerge. Each colour was refracted at a different angle. Conclusion Newton concluded that the/

##### © 2010 Pearson Education, Inc. Conceptual Physics 11 th Edition Chapter 28: REFLECTION & REFRACTION.

. Cause of Refraction Refraction Bending of light when it passes from one medium to another Caused by change in speed of light © 2010 Pearson Education, Inc. Dispersion Process of separation of light into colors arranged by frequency Components of white light are dispersed in a prism (and in a diffraction grating). © 2010 Pearson Education, Inc. When white light passes through a prism, green light is bent more than A.blue light. B.violet light. C.red light. D.None of the/

##### Refraction of Light Refraction Refraction –Refraction occurs when light waves traveling from one medium to another with a different density bend. –The.

air above it and an image is created through refraction. Index of Refraction Ratio of the velocity of light in different mediums and the velocity of light in a vacuum. Ratio of the velocity of light in different mediums and the velocity of light in a vacuum. n = c v n = index of refraction c = speed of light in a vacuum(3.0 x 10 8 m/s) c = speed of light in a vacuum(3.0 x 10 8/

##### REFRACTION Dr. Puneet Kumar Srivastava. Refraction Def: Method of evaluating the optical state of eye. Or The process by which the patient is guided through.

a sphericocylindrical lens. Prism Def: Is a wedge of refracting material with a triangular cross section that deviate light towards its base. Power of Prism (Prism Diopter/PD/ X ): 1PD deviates parallel rays of light 1cm when measured at a distance of 1m from the prism. i.e, 1cm deviates at distance of 2m =0.5 PD 1cm deviates at distance of 1/2m =2 PD Refractive State of eye Emmetropia: Parallel light rays are focused/

##### What is light?. Light Make a list of things that give us light. How many can you think of?

shifted to the side refraction direction medium substance wave transmitted Light air light water medium lightdirection Refraction Light in ___ travels ____. Light in _____ travels ___________. When light ___________, it changes ________. When light changes ________ or _____, it is called _________. _________is caused by the change of the ____________ as it travels through different ________. airfast water more slowly slows down direction bends refraction Refraction speed of light mediums Activity: Throwing/

##### P.1 Book 3A Section 2.2 Total internal reflection Disappearing pencil Criteria for total internal reflection Critical angle and refractive index Check-point.

4  By Snell’s law, P.25 Book 3A Section 2.2 Total internal reflection 3 Examples of total internal reflection b Using prisms as mirrors Multiple reflections between the front and the back surfaces form fainter images (I 1, I 3, …) A /2 Total internal reflection 3 Examples of total internal reflection d Diamonds large refractive index  easily reflect light which goes into them  sparkle facets have to be cut at carefully chosen angles, or light may escape through the bottom or sides Example 9/

##### Fiat Lux Fiat Lux Review of the Electro-Magnetic Spectrum Kate Martin McCrone Associates, Inc.

prism, blue light shows a greater change in direction than red light Diffraction Apparent bending of light around small obstacles Reflection Change of direction at an interface such that light returns back to the original medium Specular (mirror-like) reflectance: angle of incidence equals angle of reflectance Scattering Diffuse reflectance, internal reflectance Absorption Transmittance Refraction Is the straw broken? No, we see the straw through different media, with different refractive indices Refraction/

##### D IFFERENT V ARIANTS OF M ICROSCOPE Dr Uttam Kumar Das PGT-1 Dept Of Pathology BSMC Bankura.

formed in the Back Focal Plane of the objective due to interference between the direct & diffracted rays of light. The grating consists of alternate strips of material with slightly different refractive indices, through which light acquire small phase difference & these /NTERFERENCE C ONTRAST In this complex form of polarised light microscopy two slightly separate, plane polarised beams of light are used to create a 3D-like image with shades of grey. Wollaston prisms situated in the condenser and above the/

##### Light: What Is It and How Does It Work? Lesson One.

in the last lesson:  Light can be refractedLight can pass through certain materials  Light can also be blocked by certain materials Previously On…  Today, we will be experimenting with one more property of light:  White light is a mixture of all the colors and can be separated using a prism  Now you might be asking:  What’s a prism? This Time On…  A prism is a block of glass or clear plastic/

##### Chapter 17 Lecture Pearson Physics Refraction and Lenses © 2014 Pearson Education, Inc. Prepared by Chris Chiaverina.

different indices of refraction. It turns out that the index of refraction of a given material also depends on the color of the light being refracted. In general, a material has a higher index of refraction for light toward the blue end of the visible spectrum. This means that blue light bends more when refracted than red light does. This is why different colors of light travel in different directions after passing through a prism. The spreading out of refracted light according/

##### Reflection and Refraction

a beam of light emerges at a nonzero angle from water to air, the beam (a) bends away from the normal (b) continues in the same direction (c) bends toward the normal (d) changes frequency (e) slows down 7. LENSES Lenses use refraction to form images. Demo - Fresnel Lens A Convex Lens Converges Light Rays f Imaging with a Convex Lens and passes through a/

##### OPTICAL FIBER COMMUNICATION

, page. 195, 2007). . Metal thickness. . Silver or Gold commonly used. Prism Based Attenuated Total Reflection Methods Kretschmann-Raether Geometry - Prism with is interfaced with a metal and dielectric, for : refractive index of prism > refractive index of dielectric incident ray reflected ray to CCD - A light wave is incident on the prism-metal film interface metal at an angle of incidence larger then the critical angle . - At resonance condition matching an/