PDF-1.Refraction of Light 2.Laws of Refraction3.Principle of Reversibility

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. 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…. 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 . refraction. Geometrical concepts:. -incident ray. 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. . What is Refraction?. In a vacuum (air) light travels in straight lines.. But what happens when light travels from one material into another?. Like for example, from air to water?. What Happens When Light hits a Medium. Concurrent Interacting Systems. Ivan . Lanese. Focus research group. Computer Science . and Engineering Department. Univers. ity . of Bologna/INRIA. Bologna, Italy. Contributors. My coauthors: Elena Giachino (Italy), Michael . 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.. 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.. Emmetropia. and the . Ametropias. Scott P. Drexler OD. University of Pittsburgh . School of Medicine . AKA: Shape is Power. Light is a Wave. The direction and quality of that wave is changed as the wave transfers from one medium to another. Measurements of the speed of light:. c = 3 . × 10. 8. m/s = . 186,000 miles/s. light propagating through matter – . transparent vs. opaque. materials. colors. The bending of light – refraction. 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 . is the bending of light as it passes from one medium into another.. refraction. N. q. w. q. A. Note: the angle of incidence . q. A. . in air and the angle of refraction . q. A. . in water are each measured with the normal . 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. Vocabulary . Refraction-. . the bending of light as it passes from one material into another.. Prism-. . a polyhedron with two congruent and parallel faces (the bases) and whose lateral faces are parallelograms. o. . What is the angle of incidence in glass?. Problem 1. Light travels from crown glass (n=1.52) into air (n=1.00). The angle of refraction in air is 60. o. . What is the angle of incidence in glass?.