Subject: Manuscript on evanescent waves. From: "reinifrosch@xxxxxxxx" <reinifrosch@xxxxxxxx> Date: Sun, 18 Apr 2010 14:26:37 +0000 List-Archive:<http://lists.mcgill.ca/scripts/wa.exe?LIST=AUDITORY>------=_Part_1198_31711490.1271600797313 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Hello ! Now I have written a short paper "Evanescent Liquid-Sound-Pressure= Waves Near an Underwater Wineglass", with diagrams and formulae. Briefly, = in these waves, at a given place, the liquid pressure varies at audio frequ= ency, and the velocity of the "liquid particles" (well-defined groups of mo= lecules) varies likewise. The liquid density, however, is assumed to be str= ictly time- and place-independent. So these waves are similar to the slow c= ochlear travelling wave. In the latter, however, the liquid particles move = on elliptical trajectories, whereas in the evanescent waves (EW), the parti= cles oscillate back and forth on a short straight-line segment. Also, the E= Ws are standing, not travelling. These EWs are seldom discussed, it seems. = Yesterday I looked in two underwater-sound textbooks (Urick and Lurton), wi= th negative result. Please write off-line if you would like to receive the = above-mentioned pdf. I would be very grateful of course, if some List memb= ers would agree to look at that paper and to send me comments. Reinhart. Reinhart Frosch, Dr. phil. nat., r. PSI and ETH Zurich, Sommerhaldenstr. 5B, CH-5200 Brugg. Phone: 0041 56 441 77 72. Mobile: 0041 79 754 30 32. E-mail: reinifrosch@xxxxxxxx . ------=_Part_1198_31711490.1271600797313 Content-Type: text/html;charset="UTF-8" Content-Transfer-Encoding: quoted-printable <html><head><style type=3D'text/css'> <!-- div.bwmail { background-color:#ffffff; font-family: Trebuchet MS,Arial,Helv= etica; font-size: 12px; margin:0; padding:0;} div.bwmail p { margin:0; padding:0; } div.bwmail table { font-family: Trebuchet MS,Arial,Helvetica; font-size: 12= px; } div.bwmail li { margin:0; padding:0; } --> </style> </head><body><div class=3D'bwmail'><P>Hello ! Now I have written a sh= ort paper "Evanescent Liquid-Sound-Pressure Waves Near an Underwater Winegl= ass", with diagrams and formulae. Briefly, in these waves, at a given place= , the liquid pressure varies at audio frequency, and the velocity of the "l= iquid particles" (well-defined groups of molecules) varies likewise. The li= quid density, however, is assumed to be strictly time- and place-independen= t. So these waves are similar to the slow cochlear travelling wave. In the = latter, however, the liquid particles move on elliptical trajectories, wher= eas in the evanescent waves (EW), the particles oscillate back and forth on= a short straight-line segment. Also, the EWs are standing, not travelling.= These EWs are seldom discussed, it seems. Yesterday I looked in two underw= ater-sound textbooks (Urick and Lurton), with negative result. Please write= off-line if you would like to receive the above-mentioned pdf. I would be = very grateful of course, if some List members would agree to loo= k at that paper and to send me comments.</P> <P><BR>Reinhart.</P> <P><BR>Reinhart Frosch,<BR>Dr. phil. nat.,<BR>r. PSI and ETH Zurich,<BR>Som= merhaldenstr. 5B,<BR>CH-5200 Brugg.<BR>Phone: 0041 56 441 77 72.<BR>Mobile:= 0041 79 754 30 32.<BR>E-mail: reinifrosch@xxxxxxxx . </P></div></body></= html> ------=_Part_1198_31711490.1271600797313--