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

ocular lens correct answers 10x eyepiece scanning (low) power objective correct answers x10 scanning high power objective correct answers x40 scanning oil correct answers x100 total magnification correct answers ocular x objective refraction correct answers measure of dispersal of visual light as it passes through different material/ different density minimize refraction correct answers using oil, same index as glass working distance correct answers the distance between the ...

ABO numbers, math, formulas Prentice's Rule - ANSWER-P = f x c P = amount of prism correction f = lens power (in diopters) c = decentration (the distance between the pupil centre and the lens's optical centre, in millimeters) Cornea IOR - ANSWER-1.37 Tear Film, Vitreous IOR - ANSWER-1.33 Crystalline lens IOR - ANSWER-1.42 Optical Standard index of refraction - ANSWER-1.53 Crown Glass index of refraction - ANSWER-1.523 High index IOR - ANSWER-1.74 CR-39 IOR - ANSWER-1...

Edelman SPI review questions & Answers 2023. ______ is the distance covered by one cycle. a) pulse length b) wavelength c) cycle distance d) cycle duration ______ is the time to complete one cycle a) pulse duration b) pulse period c) period d) duration period ________ is a redirection of an ultrasound bean in many directions as a result of a rough boundary between two media: a) refraction b) Rayleigh Scattering c) scattering d) reflection _________ resolution is...

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 lens B. the greater internal reflections in the lens C. the less transmission ...

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

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 ocul...

How does refractive power of a lens change if its radius of curvature decreases? - Answer-The power increases How does refractive power of a lens change if its radius of curvature increases? - Answer-The power decreases What is radius of curvature in case of a lens? - Answer-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? - Answer-Refractive power will increase Calc...

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 Advance Questions With Complete Solutions. The amount of reflection of each surface of CR-39 lenses is approximately - correct answer. 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 - correct answer. D. tint and lens transmission The denser the tint in a lens A. the greater the transmission of ligh...

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...