PPT-12.1 Reflection of Light

122 Refraction of Light 123 Total Internal Reflection 124 Refraction by Thin Lenses 125 Ray Diagrams for Thin Converging Lenses Chapter 12 Light 124 Refraction by Thin Lenses Learning Outcomes. Reflection and Refraction. of . Light. Reflection and Refraction. Laws of reflection . Laws of refraction. Total internal reflection. The rainbow. 3. The Sun is about 1.5 × 10. 11. m away. The time for light to travel this distance is about:. Unit 8. How we use light to see.. To the physicist, the colors of things are not in the substances of the things themselves.. Color is in the eye of the beholder and is provoked by the frequencies of light emitted or reflected by things.. A . luminous. object is one that produces light.. An . illuminated. object is one that reflects light.. Luminous Objects. Illuminated Objects. Luminous and Illuminated Objects. We see things because they . Reflection. When a wave reaches a boundary between two media, usually some or all of the wave bounces back into the first medium.. A metal surface is rigid to light waves that shine upon it. . Light . Measurements of the speed of light (c) . Index of refraction v. medium. = c/n. the bending of light – refraction . total internal reflection . Color (wavelength and frequency, c = . l. f. . Dispersion. Measurements of the speed of light (c) . Index of refraction v. medium. = c/n. the bending of light – refraction . total internal reflection . Color (wavelength and frequency, c = . l. f. . Dispersion. LIGHT. Light carries . energy. and . power.. Light . is a form of . energy. that travels.. The . intensity. . of light is the amount of energy per . second. falling on a surface.. Most light sources distribute their light . Essential Questions:. What Are the Kinds of Reflections?. What Types of Images Do Mirrors Produce?. What Are the Kinds of Reflection?. Light obeys the law of reflection.. The angle of the reflection equals the angle of incidence.. luminous. object is one that produces light.. An . illuminated. object is one that reflects light.. Luminous Objects. Illuminated Objects. Luminous and Illuminated Objects. We see things because they . Measurements of the speed of light (c) . Index of refraction v. medium. = c/n. the bending of light – refraction . total internal reflection . Color (wavelength and frequency, c = . l. f. . Dispersion. Materials can be. . Transparent. - A material that transmits (allows through) light unaffected. . Translucent. - A material that transmits light but scatters it into different directions . . Opaque. Clear vs. Diffuse Reflection. Specular reflection: light reflected from smooth shiny surfaces. . In specular reflection the incoming and reflected angles are equal (. . =. . ’). Diffuse reflection: light is reflected from a rough textured surface. It wasn’t until the early 19. th. century that light was theorized to behave as something other than a stream of particles.. Isaac Newton proposed the particle theory of light.. Newton’s theory was used to explain the reflection and refraction of light.. EVERYONE WELCOME HERE IN THE NEW CLASS.. IN THIS CLASS WE ALL ARE GOING TO STUDY A NEW CHAPTER OF PHYSICS THAT IS LIGHT. SO LET US START IT . LIGHT. KYA HOTI H YE LIGHT . ? . LIGHT VO HI HOTI H JO HAME SAB KUCH DIKHATI H. EXAMPLE SE SAMAJHTE H..