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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…

Geometric optics regulates the propagation of light by ray and is valid only if the wavelength of light is much less than the size of the barrier. The behavior of…

Optics is the branch of Physics that studies the behaviour and properties of light.Physical optics is the study of the web properties of light.The physical optics divided in to categories(i)…

Do u know me ? Yes . U are the form of energy that contains Electromagnetic radition ,that is emitted by hot objects like laser, bulb, sun and by it…

Human eye consists of many optical parts and produce a optical system. It has a lower degree of imperfection, which is also called Aberration. Human eye takes over those defects…

The human eye is a complex optical system with multiple axes and angles. Varieties of axes and angles of the eye have been defined over the years. Some of the…