The acronym LASER stands for Light Amplification by Stimulated Emission of Radiation. Unlike light from a standard incandescent bulb or a candle, which emits a chaotic mixture of...
Fibre optics is a technology that uses thin, flexible strands of glass or plastic (optical fibres) to transmit data, voice, and video signals in the form of light...
A telescope is an optical instrument designed to gather light from distant objects—such as celestial bodies or far-off terrestrial landscapes—and form a magnified image. It works primarily by...
A microscope is an optical instrument designed to produce magnified visual images of small, near-by objects that are invisible to the naked eye. It works by utilizing the...
Optical instruments are devices that process light waves to enhance images for viewing, or to analyze the characteristics of light (such as intensity, wavelength, or polarization). They work...
The human eye is a specialized sense organ acting as an organic camera. It functions by focusing light rays onto a photosensitive layer to create an image, which...
A lens is a piece of transparent refracting medium bounded by two surfaces, at least one of which is a spherical curved surface. Lenses work on the principle...
Dispersion is the phenomenon where a beam of composite white light splits into its constituent component colors when passing through a refracting medium. This occurs because different colors...
Total Internal Reflection (TIR) is an optical phenomenon that occurs when a ray of light traveling through an optically denser medium strikes the boundary of an optically rarer...
The refractive index (also known as the index of refraction) is a dimensionless number that describes how fast light travels through a material. It is a fundamental property...
