Wave diraction through an opening Alexandria of Egypt

Wave di�raction through an opening Alexandria of Egypt 12/14/2010, coordinates: 310 12′ 28. 56” N, 290 53′ 34. 66” E; Theoule-sur-Mer, France 4/18/2010, coordinates: 400 32′ 27. 33” N, 180 04′ 09. 17” E.

Wave di�raction causes circular erosion of the beach Campo di Mare, Italy, 4/18/2010, coordinates: 400 32′ 27. 33” N, 180 04′ 09. 17” E

Di�raction produced by a boat Cyprus, 7/7/2007, coordinates: 340 56′ 27. 21”N, 330 39′ 17. 36”E. b Di�raction of waves against the end of a protection barrier La Grande-Motte, France, 8/21/2006, coordinates: 430 33′ 18. 71”N, 40 05′ 20. 01”E

Examples of wave refraction, the wave fronts bend approaching the beach Villaricos, Spain, 4/26/2002, coordinates: 37 14 04. 59” N, 1 47 04. 79” E. Sardegna, Italy, 8/18/2010, coordinates: 390 46′ 12. 64” N, 80 27′ 28. 82” E

Chichiriviche, Venezuela, 4/27/2006, coordinates: 100 55′ 29. 88” N, 680 15′ 26. 93” W

Examples of di�raction Reflections of a boat and reflection of wake by an obstacle circular waves Port Elizabeth, South Africa 11/8/2006, coordinates: 330 57′ 19. 98” S, 250 38′ 33. 05” E River Thames, London, 11/06/2006, coordinates: 510 29′ 42. 06” N, 00 03′ 37. 86” E

Reflections of a boat wake by an obstacle River Thames, London, England, 11/06/2006, coordinates: 510 28′ 05. 40” N, 00 15′ 18. 12” E

Interference between wave fronts produced by the wakes of two boats River Thames, London, 11/06/2006, coordinates: 510 27′ 40. 79” N, 00 16′ 05. 69” E Interference between circular waves coming from two openings Rimini, Italy, 5/28/2002, coordinates: 440 05′ 15. 02” N, 120 32′ 26. 07” E

Interference from secondary sources Chao Phraya River, Bangkok, Thailand, 8/20/2010, coordinates: 130 36′ 40. 11” N, 1000 34′ 46. 60” W