source file: mills2.txt Date: Wed, 11 Jun 1997 07:37:59 +0200 Subject: too high to hear ... From: Will Grant Televisions make an awful racket, even when their speakers are turned off: a regular, high-pitched squeal. Even when the volume is turned off, I can tell when the TV is on in the next room. The ear is specialised tissue that evolved from touch. There is no reason to assume that we hear only with our ears. I think our brains are acutely sensitive to a myriad range of electromagnetic fields; some of us are aware of it, most are not. Partly, I think we are desensitized for practical reasons -- there is so much background noise, including from our own bodies, that it's only sensible to filter out most low-level signals. But, my word, they're certainly there ! Like the "silence" of a summer's day in the country. Will Received: from ns.ezh.nl [137.174.112.59] by vbv40.ezh.nl with SMTP-OpenVMS via TCP/IP; Wed, 11 Jun 1997 16:52 +0200 Received: by ns.ezh.nl; (5.65v3.2/1.3/10May95) id AA23144; Wed, 11 Jun 1997 16:52:20 +0200 Date: Wed, 11 Jun 1997 16:52:20 +0200 Received: from ella.mills.edu by ns (smtpxd); id XA23158 Received: (qmail 21927 invoked from network); 11 Jun 1997 14:47:47 -0000 Received: from localhost (HELO ella.mills.edu) (127.0.0.1) by localhost with SMTP; 11 Jun 1997 14:47:47 -0000 Message-Id: <009B5A0F3D35A866.C05B@vbv40.ezh.nl> Errors-To: madole@mills.edu Reply-To: tuning@eartha.mills.edu Originator: tuning@eartha.mills.edu Sender: tuning@eartha.mills.edu