High index of refraction - Study guides, Class notes & Summaries

ABO Prep/Study Guide 2024 Questions with Complete Solutions| American Board of Opticianry what is the relationship between abbe value and chromatic aberration? (Ans: - The abbe value of a material is INVERSELY proportional to the chromatic aberration; the higher the abbe value, the lower the chromatic aberration refraction (Ans: - the bending of light as it passes from one medium to another of a different index of refraction; the amount of refraction depends on the incident angle and index...

ABO STUDY GUIDE 2024/2025 Prentice Rule - ️️ - (Power x distance in mm) /10 Cornea index of refraction - ️️ - 1.37 Tear Film, Vitreous index of refraction - ️️ - 1.33 Crystalline lens index of refraction - ️️ - 1.42 Optical Standard index of refraction - ️️ - 1.53 Crown Glass index of refraction - ️️ - 1.523 High index of refraction - ️️ - 1.74 CR-39 index of refraction - ️️ - 1.49/1.50 Poly index of refraction - ️️ - 1.586 Air - ️️ - 1.00 How f...

Base Curve - Curvature of the front of the lens How is Cyl ground on a minus cyl lens? - Single curve on the front. Cyl ground on the back How is cyl ground on a plus cyl lens? - Flattest curve on the front. Old way of doing it do to cosmetics What is Vogels formula used for? - Creating best form and n standard surfacing Vogel's Formula (+ lenses) - Spherical equivalent + 6.00 Vogel's Formula (- lenses) - Spherical equivalent + 6.00 / 2 Corrected Curve Theory rules: - #1 ocular curve...

ABO ADVANCE QUESTIONS AND ANSWERS >> 2024 VERSION 100% ACCURATE The amount of reflection of each surface of CR-39 lenses is approximately - 4% The absorption of light in lenses is classified by two variables. What are they? A. base curve and thickness B. index of refraction and thickness C. thickness and lens transmission D. tint and lens transmission - D. tint and lens transmission The denser the tint in a lens A. the greater the transmission of light through the l...

OPTICAL COMMUNICATION AND NETWORKING 2 Marks Questions and Answers UNIT - 1 - INTRODUCTION 1. Define a fiber optic system. Fiber optic system consists of a fiber optic cable, a light source and a light detector. The optic fiber is used to carry the light beam from one place to another. 2. What are the uses of optical fibers? a) To transmit the information of telephone communication, computer data, etc. which are in the form of coded light signals b) To transmit the optical imag...

How does refractive power of a lens change if its radius of curvature decreases? - The power increases How does refractive power of a lens change if its radius of curvature increases? - power decreases What is radius of curvature in case of a lens? - Flattener lens= larger radius of curvature. More rounded lens=lesser radius of curvature. How does refractive power of a lens change if its index of refraction increases? - Refractive power will increase Calculate the refractive power o...

Who is the father of microscopy? Antonie van Leeuwenhoek Lamp: produces visible light to illuminate the specimen Condenser: collects light and directs it through the stage opening (converges or focuses the rays of light to a single point) Iris diaphragm: regulates the amount of light available to the objective lens Factors that affect microscope function: Resolving power, numerical aperture, magnification, working distance Resolving power: ability of a microscope to differentiate two ...

give the correct order of receiver operations - 1. amplification 2. compensation 3. compression 4. demodulation 5. reject (low or high) frequency and (low or high) amplitude, will cause an increase in the mechanical index and the risk for cavitation - low frequency, high amplitude give the correct units for each: circumference: area: volume: - circumference: cm area: cm squared (cm^2) volume: cm cubed (cm^3) when PRP increases, frame rate .... - increases period X number of cycles ...

An optical fiber works based off of a principle known as; Total Internal Reflection. The bending of light as it passes from one transparent material into another which has a different refractive index is what? Refraction. Light is electromagnetic radiation in the wavelength range including visible, ultraviolet, X-rays and _______________. Infrared. What are the three parts of a typical optical fiber? Core, Cladding, buffer Coating. (3 C's) A simple fiber optic system consists of what four...

ABO 2023 Exam Questions with Correct Answers Visable spectrum of light - Answer-380 nm - 760 nm Amplitude - Answer-Vertical distance from trough to crest ASIM - Answer-American Society of Testing Materials ANSI - Answer-American National Standards Institute OSHA - Answer-Occupational Safety and Health Administration FDA - Answer-Food and Drug Administration FTC - Answer-Federal Trade Commission Inverted triangle/diamond - Answer-Unobtrusive frame, light or medium weight fra...