PPT-Images Formed By Lenses

Section 122 Pages 494 498 Lens Terminology The principal axis is an imaginary line drawn through the optical centre perpendicular to both surfaces The axis of symmetry is an imaginary vertical line drawn through the optical centre of a lens. gpliinfo brPage 3br Vertex Conversion Chart minus plus 387 400 425 400 425 450 425 450 475 450 475 500 475 500 525 500 525 562 512 550 587 537 575 612 562 600 650 575 625 675 600 650 700 625 675 737 650 700 762 662 725 800 687 750 825 712 775 850 725 How do different lenses affect the image we see.. Starter. : how do glasses help to correct long and short sighted vision?. Key words . Lens – creates an image by refracting light . Converging lenses . . 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?. Optical Instruments. Optical Instruments. Analysis generally involves the laws of reflection and refraction. Analysis uses the procedures of geometric optics. To explain certain phenomena, the wave nature of light must be used. Refraction of Light. EM lesson 8. Convex . (converging) Lens. Thicker in the center than at the edges. Have positive focal lengths . Converge. . parallel rays of light that pass through them. Rules for convex lenses. 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.. Recognise and use key words relating to lenses:. Focus / focal point, focal length. Optic centre. Principal axis. Use ray tracing to find the location of images in lenses.. Describe the images formed in lenses.. . 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?. Different Types of Camera Lenses. 1. Copyright © Texas Education Agency, . 2015, . All rights reserved. Images and other multimedia content used with permission. . Introduction to Lenses. One common misconception about cameras is that the most important thing is the body of your camera. . identify & use different types of cameras & lenses. COURSE DESCRIPTION . This course is designed to introduce students to the fundamentals of commercial photography in relation to seeing photographically, operating cameras, use of light, image capture, and processing digital images. Students will also learn the history of photography, legal and ethical issues related to the industry. Career exploration is also a part of this course. . Lenses. A transparent object used to change the path of light. Examples: . Human eye. Eye glasses. Camera. Microscope. Telescope. Reading stones used by monks, nuns, and scholars ~1000 C.E.. Lenses . 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.. Transparent/Translucent/Opaque. WS. Take out NASA picture (from Friday). Homework: Read & take notes on chapter 23, section 3 (last one - you finished the book). Review & reinforce Study Island & Skills Tutor due Thursday. Reading and Math Skills Tutor due Friday (last one).. global contact lenses market has reached USD 7.59 billion in 2020 and is further projected to reach USD 11.48 billion by 2027, at a CAGR of 5.9% during the forecast period