Interference Fringes- Study Material
The Science of light is called optics. The study of optics acoustic impedances of the media. This property is used is divided into geometrical optics and physical optics, in ultrasonic testing. Geometrical optics deals with the applications of the rectilinear propagation of light to different optical light must travel in straight lines.
Interference Fringes- Study Material
Synopsis
- Interference
- Principle of Superposition
- Interference due to thin films
- Formation of interference fringes
- Newton’s rings
Interference:
Interference is the optical phenomenon in which brightness and darkness are produced by two exactly similar light Waves meeting. When two light waves, of same frequency and having constant phase difference, coincide in space and time, there is a modification in the intensity of light.
Formation of interference fringes:
The intensity of a light wave at a point is proportional to the square of its amplitude. When two waves meet at a point the resultant amplitude is the vector sum of the two amplitudes. If it is maximum there will be brightness and it is zero, there will be darkness at that point.
Newton’s rings:
Circular interference fringes can be produced by enclosing a very thin film of air or any other transparent medium of varying thickness between a plane glass plate and convex lens of a large radius of curvature. Such fringes were first obtained by Newton and are known as Newton’s rings.
TNEB TANGEDCO AE Basic Engineering Study Materials download
TNEB TANGEDCO AE Study Materials download
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