PPT-12.1 Refraction

Mr Dvorsky SNC2D1 Review of last chapter From the last chapter we know how light behaves when it travels in space or in the air ie it travels in a straight line When light strikes a plane mirror the angle of incidence the angle of reflection . 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 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.. pp. 562 -567. Mr. Richter. Agenda. Warm-Up. Introduction to Refraction Demo. Reminder: Quarter 3 Ends Friday. Notes:. Refraction. Index of Refraction. Why Light Bends. Refracted Images. Snell’s Law. 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. . Kai Lu. King Abdullah University of Science and Technology. Outline. Introduction and Motivation. Theory: conventional SVI with stationary phase integration. S. ynthetic data example. Field data example. 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. CHAPTER 7. What is Refraction?. What is Optical Density?. The Laws of Refraction. The Refractive index . Angle of Incidence / Refraction. Total Internal Reflection. Refraction is the change in direction of light when it passes from one medium to another.. Presented by: Vandana Bathla & Eric Williams. Light Refraction. Have you ever wondered why it appears we see puddles of water on a highway on a hot summer day?. What you are seeing is not really water, but a mirage.. 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.. 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. 1. Put the penny in the . cup. . Look at the penny, then walk backwards . until just . after you can't see the penny anymore.. 2. It's very important that you can't see the penny. Without that, the magic . 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.. Of light. By: Ahmed. Definitions. Luminous . objects . – . generate their own light (the sun). Illuminated. objects – reflect light (the moon). Definitions. Line . of Sight . – a line from an object or image to your eyes (light from the object travels along this line to your eyes). Stephen Kyle. University College London. s.kyle@ucl.ac.uk. Co-authors: . Stuart Robson (UCL). Lindsay MacDonald (UCL). Mark Shortis (RMIT University). The task for UCL in the LUMINAR project. “Large volume” means 3D metrology in large manufacturing spaces. The Airbus image (right) shows a typical example..