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Refractometer - Definition and Applications

A refractometer is an optical device used for measuring the extent to which light is bent or refracted when it moves through a substance.

6 May 2014

Gaussian Beam - Definition and Parameters

A Gaussian beam is a beam of electromagnetic radiation with intensity distributions and transverse electric field represented by Gaussian functions.

6 May 2014

Michelson Interferometer - Definition and Applications

Michelson interferometer is a tool to produce interference between two beams of light. It is the most common design for optical interferometry and was invented by Albert Abraham Michelson.

6 May 2014

Fluorescence - Definition and Applications

Fluorescence is the emission of light by an atom or molecule following absorption of light or other radiation by the molecule. The emitted light arises due to the transition of the excited electrons from the first singlet level to ground level.

6 May 2014

Phase-Contrast Microscope - Definition and Applications

Phase-contrast microscope is a type of light microscopy that intensifies contrasts of transparent and colorless objects by influencing the optical path of light. Phase-contrast microscopy is an optical microscopy method that is vital in biological and medical research.

6 May 2014

Amici Prism - Definition and Applications

Dispersive prism is a type of optical prism that divides the incident light into different colors of the electromagnetic spectrum.

6 May 2014

ant Critical Angle - Definition and Applications

Critical angle in optics refers to the angle of incidence beyond which total internal reflection of light occurs.

6 May 2014

Diverging Lens - Definition and Characteristics

A lens is an optical device that transmits light by refraction; the incident beam is either converged or diverged based on the nature of the lens.

6 May 2014

Diopter (unit) - Definition and Applications

Diopter is the unit of measurement of the optical power of lens or a curved mirror. In terms of numerical value, it is equal to the reciprocal of the focal length of a lens of curved mirror measured in meters. In other words, diopter is the unit of reciprocal length.

6 May 2014

Depth of Focus - Introduction and Meaning

Depth of focus in optics is a measure of the tolerance of placement of the image plane with respect to the lens. In photography, depth of focus refers to the tolerance of the films displacement within the camera.

6 May 2014