- It can be used to explain the particle behavior of waves.
- It states that each point on a wavefront can be considered a new wave source.
- It can be used to find the velocity of a wave.
- All of the above.
This is College Physics Answers with Shaun Dychko. Huygens's Princple says that each point on a wavefront can be considered a new wave source. And so, a wavefront actually consists of many points, each of which are themselves, point sources of the wave.