The 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...

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 sy...

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...

Certified Paraoptometric Coder Exam Questions and Answers Latest Guide 2024 (Already Scored 100%) Is it acceptable for a staff person to correct a CPT or ICD-10 code on a route slip or claim without the consent of the doctor? Medical Decision Making, Examination, and History - Answer What are the Key Components of E and M Coding? 51 - Answer What modifier is used if two non bundled surgical procedures are performed on the same eye at the same visit? 24 - Answer What modifier should you use...

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 ...

Diffraction - ️️when light is bent without enter another medium; light bending around doorway into dark room Index of refraction - ️️a measure of the amount a ray of light bends when it passes from one medium to another n= (speed of light in air)/(speed of light in medium) where "n" is index of refraction higher index of refraction - ️️the more it bends light and slower the speed Electromagnetic wave theory - ️️light travels in a series of waves moving outward from l...

____ is defined as specific area or location where Doppler shift info is being obtained. A. spectral broadening B. nyquist limit C. sample volume D. spectral window -answer- C. sample volume Spatial resolution is: A. the minimum reflector separation required to produce separate echos. B. highest with linear phased arrays. C. the weakest reflected signal the transducer can receive D. another term for slice thickness resolution -answer- A. the minumum reflector separation required to pr...

The raiot of the speed of light in air to the speed of light in another medium is called the ____. A. Index of reflection B. Angle of reflection C. Index of refraction D. Angle of refraction CORRECT ANSWER-C. Index of refraction The index of refraction 1.523 is for which of the following media? A. ophthalmic crown glass B. Polymethylmethacrylate PMMA C. Flint Glass D. water CORRECT ANSWER-A. ophthalmic crown glass Light waves produce vision in humans by stimulating the _____. A. c...

vitreous humor - ANSWER the transparent, colorless mass of soft, gelatinous material which fills the eyeball behind the lens: 1.42 - ANSWER the index of refraction of the crystalline lens is: 1.37 - ANSWER the cornea has an index of refraction of: 6 - ANSWER the extra-ocular muscles are inserted into the sclera and serve to rotate the eye in all possible directions. There are _______________ of these muscles in each eye. sclera and cornea - ANSWER the fibrous tunic is comprised of th...