- #1
Jigyasa
- 18
- 0
I have a problem understanding diffraction and its dependence on the wavelength of the source. We know that light cannot travel through obstacles of the size of everyday objects while sound can. That is why we can hear sound across the corner of a building but we can't see a light source across the cornerBut the light and sound source both have a series of spherical wavefronts emanating from them. The spacing between these wavefronts is of the order of their respective wavelengths but whatever the spacing, we will observe some part of some wavefront on the other side of the corner right?Why can light/sound only emanate out of obstacles of the order of their wavelength?