PPT-Refraction is bending of light rays

Refraction occurs at a boundary The speed of light must change at the boundary The angle of the light ray is measured from the normal as was the case with reflection If the speed slows across the boundary the refracted angle will be smaller the light ray will bend toward the normal. pp. 503 – 506, and 525 (24.1). Mr. Richter. Agenda. Warm-Up. Notes:. The Speed of Light. Index of Refraction. Angle of Refraction. Total Internal Reflection. Dispersion . Objectives: We Will Be Able To…. RAY OPTICS -I Refraction of Light: Refraction is the phenomenon of change in the path of light as it travels from one medium to another (when the ray of light is incident obliquely). It can also be de 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:. Intro to Refraction. Take 3 cups from the front, labeled 1,2,3. . Observe each straw through the side of the cup as you slowly turn the cup. . DO NOT STIR THE CONTENTS!. Write down your observations. . Define refractive index.. Demonstrate refraction.. State the Laws of Refraction.. Solve problems about refraction.. HL: Solve problems about refractive index in terms of relative speeds.. Give examples of refraction in nature.. Images formed by mirrors. plane mirrors. curved mirrors . Concave (converging). Convex (diverging). Images formed by lenses. the human eye. correcting vision problems. nearsightedness. farsightedness. Transparent substances refract light. It’s not magic… it’s science!. How light Refracts. Refraction is due to changes in the speed of light.. In space, light travels at 300 000 km/s. Space is a vacuum, and there are no particles to get in the way of light and slow it down.. Define refractive index.. Demonstrate refraction.. State the Laws of Refraction.. Solve problems about refraction.. HL: Solve problems about refractive index in terms of relative speeds.. Give examples of refraction in nature.. It's . the most valuable method of . estimating the optical state . of the eye , it's useful and accurate up to (0.25D) correction. .. Goal of retinoscopy:. Is to determine the nature of the . patient’s refractive error. . Interferometry: Theory. Pawan Bharadwaj, Gerard Schuster, Ian Mallinson. KAUST. 110 km. 110 km. Standard OBS Receiver Gather. Super-virtual OBS Receiver Gather. Problem: . Short Streamer=Missing Low-Wavenumber Components . light bends or refracts when it moves from one medium to another. the light bends because it changes speed. if light slows down it bends toward the normal. if light speeds up it bends away from the normal. Additional Professor. Department of Ophthalmology. AIIMS Rishikesh. Acknowledgement. Photographs in this presentation are courtesy of. . . Kanski’s Clinical . Ophthalmology.. 2. Learning Objectives. . Agrawal. Additional Professor. Department of Ophthalmology. AIIMS, . Rishikesh. Acknowledgement. Photographs in this presentation are courtesy of. . . Kanski’s. . Clinical . Ophthalmology.. X Rays. Are electromagnetic radiations having wavelength of order of 1. Are highly energetic radiations which are emitted when energetic electrons are made to incident on a metallic target.. Were discovered by German Physicist W.C. Roentgen in1895..