Zusammenfassung der Ressource
Refraction and Diffraction
- Diffraction- waves spreading out
- All waves spread out at the edges when they pass
through a gap or pass an obstacle
- The narrower the gap the more the waves spread out.
- The wider the gap the less the waves spread out.
- Radio waves and hills:
- The waves are so large that when they come into contact with hills, they may not defract fully which is why signal levels can be so poor