Physical Optics

Coherent sources of Light-wave If light-waves of the same wavelength are emitted from two sources with a particular phase difference and it that phase difference…

Superposition of waves: If two waves cross through a particle of a medium simultaneously, then each wave will displace that particle. As a result, there…

Laws of Refraction in the light of Huygens’s Principle According to Huygens’s principle, any point in the wavefront can be considered as the source of…

Laws of Reflection in the Light – Huygens’s Principle Each point on any wavefront is considered as the source of oscillation or disturbance. The waves…

Huygens’s Principle – Propagation of Light Waves If the source of light is known, then the position of wavefronts can be determined by ordinary rule.…

Plane Wave Front The continuous locus of points having the same phase of vibration in a medium through which a wave propagates is called a…

Wave Front Explanation We know, disturbance in a medium is created due to the combined vibration of different particles of the medium. For example –…

Spherical Wave Fronts We know, the locus of the particles in a wave having the same phase is the wave front. The wave fronts near…

Electromagnetic Spectrum The electromagnetic spectrum describes all the wavelengths of light. From dark nebulae to exploding stars, it reveals an otherwise invisible universe. Any periodic…

Electromagnetic theory of Wave: In 1845 Faraday discovered that plane of polarization turns due to the influence of strong magnetic field. This effect is known…