1. On reflective beaches, incident waves and subharmonic edge waves are dominant. 2. Such illusion effects do not rely on the direction and form of incident waves . 3. The reflection coefficient determines the ratio of the reflected wave amplitude to the incident wave amplitude. 4. The reflected waves can interfere with incident waves , producing patterns of constructive and destructive interference. 5. Its yield was estimated at 15 precursor, a second shock front ahead of the incident wave . 6. Pressure however doubles at the ends because of interference of the incident wave with the reflective wave. 7. Acoustic imaging can be improved by applying selective phase conjugation on some harmonics of the incident wave . 8. Thus a half-wave parasitic element radiates a wave 180?out of phase with the incident wave . 9. However, the remaining portions of the incident waves during a major earthquake still bear a huge devastating potential. 10. The incident wave is created by suddenly releasing the clamp, which sends a torsion wave toward the specimen.