Notes

Huygens’ Principle…

Huygens’ Principle – Huygens’ Principle is used to at a time t the shape of determine, if the shape of at time t = 0 is known that wavefront. It states that, the source of producing secondary disturbance of the wavefront in each point and the wavelets emanating from all the directions with the speed these points spread out in of the wave known as secondary wavelets. If we draw to all these spheres a common tangent, then at later time the new position of the wavefront.