PDF-THE ENLARGER HEAD (1) houses the major parts--light source, lenses, ne

contrast and added detail THE NEGATIVE CARRIER 3 supports the negative sliding into a slot between the condensor and the main len THE LENS 4 bends the rays so that they enlarge a THE HEIGHT AD. CONCEPTS EXPLORED IN THIS LESSON. ocular lens / eyepiece. body tube. arm. base. light source/illuminato. r. revolving/rotating nosepiece. objective lenses. coarse adjustment knob. fine adjustment knob. . 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. 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. We will look at the following parts:. Take notes on this page…. CORNEA . (clear lens in front of eye). transparent covering of the front of the eye. Allows for the passage of light into the eye and functions as a fixed lens.. 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. 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. We will look at the following parts:. Take notes on this page…. CORNEA . (clear lens in front of eye). transparent covering of the front of the eye. Allows for the passage of light into the eye and functions as a fixed lens.. 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.. The camera. All cameras are basically the same. A box with a piece of “film” in one end. A hole in the other end. The hole is there so that light can enter the box, strike the light-sensitive surface of the film and make a picture. 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-.