PPT-Geometric Optics Geometric Optics: The process of using light rays to determine how light

Light travels in a STRAIGHT LINE ANOTHER WAY TO THINK OF LIGHT Light leaving the candle travels in all directions but we only SEE the light that travels in to our EyeBrain ANOTHER WAY TO THINK OF . for. 1. st. year Physics . Honours. Course. By . Arnab. . Gangopadhyay. . Light. The . light. , . with which we see, is a small part of the vast spectrum of electro magnetic field.. Interaction of light with matter divided into three regimes.. By Kristine. Optical devices. An optical device is any technology that uses light. An optical device can be as simple as a mirror, or as complex as the Hubble Space Telescope.. Microscopes. Hans and Zacharias Jansen of the Netherlands first built a microscope in about 1595.. Geometrical optics. , or . ray optics. , describes light propagation in terms of "rays". The "ray" in geometric optics is an abstraction or "instrument", that can be used to predict the path of light.. Images formed by mirrors. plane mirrors. curved mirrors . Concave (converging). Convex (diverging). Images formed by lenses. the human eye. correcting vision problems. nearsightedness. farsightedness. Physics 4150. Fall, 2016. M. Goldman, Instructor. Laser. Flashlight. Light. bulb. Incident ray from a light bulb. MANY reflected rays come. from all parts of Alex, including. his nose - a diffuse object. Images formed by mirrors. plane mirrors. curved mirrors . Concave (converging). Convex (diverging). Images formed by lenses. the human eye. correcting vision problems. nearsightedness. farsightedness. Light . travels through space in . straight lines. . If a ray of light meets a body in its passage through space one of three things may happen. :. It may be . absorbed. . It may be . reflected.. It may be. The Law of Reflection. Reflection. Light behaves in a very predictable manner. Light can only travel in a straight line (most of the time…). The . Law of Reflection. states that the INCIDENT (incoming) light’s angle will be exactly the same as the reflecting light’s angle. they are: Geometrical optics - this area of optics operates on the primary assumption that light travels in a straight line. Although this is an abstraction of reality, it nevertheless permits rathe Light = straight path. . absorbs energy as its electrons. move from a low to a high energy level.. An atom:. emits light when an electron moves from a high to a low energy level..  .  . Learning Goals. Raytracing. Lecture 7: Optics. UCSD Physics 122. 2. Reflection. We describe the path of light as straight-line rays. “geometrical optics” approach. Reflection off a flat surface follows a simple rule:. Geometric Optics. Understanding images and image formation, ray model of light, laws of reflection and refraction, and some simple geometry and trigonometry. The study of how light rays form images with optical instruments. Introduction to Optics. Overview. The Great Debate. What is light?. Properties of light. The wave-like model. Theories of . colour. Show me the light!. A historical debate: . Optics. Optics: is the study of the . Dr. Steve Peterson. Steve.peterson@uct.ac.za. OPTICS. Chapter . 23. : . Geometric Optics. In this section, we will use the . ray model of light . to understand the formation of images by . mirrors. and .