Interference can arise with one source of waves where the waves travel different distances before meeting. The difference in the distance travelled (the path difference) must be a full number of ...

Interference takes place when two different waves emerge from two different sources ... Interference sources are called so only if the sources are a maximum of two. Diffraction sources are ...

It discusses the role of wave interference in producing holograms, using sound and light waves as examples. The film demonstrates the use of lasers to capture and reconstruct images through ...