PPT-Ray Diagrams Notes Lenses change the paths of light.

Lenses A light ray bends as it enters glass and bends again as it leaves Light passing through glass of a certain shape can form an image that appears larger smaller closer or farther than the object being viewed . . How Do Your Eyes Help You See?. A lens is a curved surface, like a piece of glass or plastic.. Its curved shape makes light bend.. Lenses can make objects appear bigger or smaller to our eyes.. What is a lens?. Meet the microbes!. Escherichia coli . prokaryote. divides every 20-30 min.. (lab uses nonpathogenic strain) . Saccharomyces cerevisiae. eukaryote. divides every ~90 min. . Microscopes are required to see individual microorganisms. LENSES. A light ray bends as it enters glass and bends again as it leaves. This refraction is due to the difference in the average speed of light in glass and in air.. Glass of a certain shape can form an image that appears larger, smaller, closer, or farther than the object is actually viewed.. 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. Luke Liao. 1. Overview. Background on Lenses. Definition of a Lens. Lens Effects. Basic Lens Terminology. History of Lenses. Ancient Lenses. Renaissance Lenses. Modern Lenses. Conclusion. 2. Definition of a Lens. . How Do Your Eyes Help You See?. A lens is a curved surface, like a piece of glass or plastic.. Its curved shape makes light bend.. Lenses can make objects appear bigger or smaller to our eyes.. What is a lens?. Section 1 . Mirrors. A. . Light is necessary for eyes to see. 1. . Light waves spread in all directions from a light.. 2. . The brain interprets light waves as traveling in a straight line.. B. Plane mirror. 12.2 Refraction of Light. 12.3 Total Internal Reflection. 12.4 Refraction by Thin Lenses. 12.5 Ray Diagrams for Thin Converging Lenses. Chapter 12 Light. 12.4 Refraction by Thin Lenses. Learning Outcomes. 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. Section 1: Objectives. Use. ray diagrams to show how light is reflected or refracted.. . Compare . plane mirrors, concave mirrors, and convex mirrors.. . Use. ray diagrams to show how mirrors form images.. Converging Lens = Convex. A . ray of light. is an extremely narrow beam of light.. All visible objects emit or reflect . light rays. in all directions.. . Our eyes detect . light rays. .. . We see images when . 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. Escherichia coli . prokaryote. divides every 20-30 min.. (lab uses nonpathogenic strain) . Saccharomyces cerevisiae. eukaryote. divides every ~90 min. . Microscopes are required to see individual microorganisms. mTBI. Photophobia. Kia B. Eldred, OD, FAAO. Diplomate. in Low Vision. Staff Optometrist. Michael E. . DeBakey. VAMC. Mechanism of Photophobia. “Photophobia” is a misnomer – it means fear of the light. It denotes patients who have an abnormal sensitivity to light. “Photo-.