Optics & Refraction

                   Ophthalmology study is completely based on optical devices. Prism is also an optical device and it is wisely used in Ophthalmology and Optometry fraternity. Prism plays a major role…

Almost everyone is familiar with the word “lens". We have crystalline lenses in our eyes. Sometimes we need artificial lenses to correct our Refractive errors such as myopia, hypermetropia, astigmatism…

Lens: A piece of transparent material (such as glass) whose two opposite regular surfaces are either curved or one is curved and the other is flat and which is used…

ABSTRACT Prism is a homogenous , transparent medium bounded by two plane surfaces, inclined to each other at an angle.  It has two refractive surfaces,  angle of the prism ,…

When a ray of light enters a denser medium it is refracted towards the normal in such a manner than the ratio of the sine of the angle of incidence…

What is reflection? Reflection is the process of bouncing back of wavefront from a plane surface when a ray of sound or light is independent on that surface. it is…

DEFINATION: (photo = light, metry = measurement) Photometry is the branch of science that deals with the measurement of visible light in units that are weighted according to the sensitivity…

The facts we need to know about radiometry, that radiometry is the science of measurement of optical radiation at any wavelength, based simply on physical measurements. Radiant energy cannot be…

Fluorescein is a synthetic organic compound available as a dark orange/red powder soluble in water an alcohol. Fluorescein is a small molecule that is only loosely bound to plasma proteins,…

Light is all around us,it not only lets us see in the dark,but the properties of light are important to many aspects of our lives.Refraction through lenses of eyeglasses or…