Question

about hygene wave theory​

Answer 1

The first person to explain how wave theory can also account for the laws of geometric optics was Christiaan Huygens in 1670. ... The new wave-front is the tangential surface to all of these secondary wavelets.” According to Huygens' principle, a plane light wave propagates though free space at the speed of light

Answer 2

Explanation:

huygens was a scientist who gave a theory about the propagation of wave.

His theory is as follows

(I)=every point on a wave-front behave like a source of light which emmits secondary waves.

(ii)=The secondary wavelets spread in all directions with the speed of light.

(iii)=The tangent draw at any instant along the forward direction on the wave front represent secondary wave-lets.