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Nesgroup address: rec.travel.caribbean - Date & Time for the message: Mon, 21 Mar 2005 09:59:57 +0200
/ Author of the message: Ken Tough |
Title of the message: |
Re: Snorkeling Fin Advice
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Text of the message: |
Dillon Pyron <dmpyronINVALID@austin.rr.com> wrote: >>That's air in your lungs causing that bouyancy. Solid tissue >>(whether it's bone, muscle, or fat) doesn't have anywhere near >>that amount of bouyancy. (It's also why when you get down below >>one atmosphere you lose bouyancy, as the air becomes more dense). >>[Unless you have football-sized sinuses, that is] > >I call bullshit! You're lungs don't change in volume. The air >pressure inside them is the same as the surrounding water. I don't >lose any bouancy at depth. >Next? As I point out, the density of the air increases. The pressure, as you say, is the same as the surrounding water, which at 60ft/20m is three atmospheres. Since, as you correctly point out, the volume is the same, then the mass of the contained air is 3 times as much. Bouyancy is thus lost. If your lungs were a glass fishingnet bouy and the air contained didn't change pressure, then the bouyancy |
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Estaplace.com is one the Ceglia Giovanni projects, started on 20 July 2005, and online since 20 August as a real estate platform for listings, mainly operating on the Italian and American/English market in the Internet, Estaplace would like to become the point of referiment for home sellers and home buyers, a site where private owners or real estate agencies can have the possibility to show their offers to the world. Estaplace.com is only one of the Giovanni Ceglia's sites. Everyday Giovanni Ceglia works to improve new Internet tools and services for online marketing and business. Estaplace.com will become the biggest portal for real estate business and investments online.