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Invention Allows Humans to Breathe Like Fish
Live Science ^
| 6/6/05
| Bill Christensen
Posted on 06/06/2005 9:14:07 AM PDT by kiriath_jearim
click here to read article
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To: kiriath_jearim
2
posted on
06/06/2005 9:15:06 AM PDT
by
lilylangtree
(Veni, Vidi, Vici)
To: kiriath_jearim
Israeli scientists continue to amaze me!!!
To: kiriath_jearim
4
posted on
06/06/2005 9:18:16 AM PDT
by
Puppage
(You may disagree with what I have to say, but I shall defend to your death my right to say it.)
To: Puppage
That was one of my favorite movies growing up! It evoked alot of emotions in my young brain. Wonder, excitement, and sadness....
5
posted on
06/06/2005 9:22:35 AM PDT
by
Paradox
(Who cares about his razor, I use Occam's Chainsaw!)
To: kiriath_jearim
Sounds expensive & maintenance intensive. If it doesn't extend my Bottom Time, I am not interested! Besides, how would this system be superior to the semi-closed rebreather systems available now? If I'm going to break my piggybank that's where I'm going to spend it.
6
posted on
06/06/2005 9:25:55 AM PDT
by
Tallguy
To: kiriath_jearim
7
posted on
06/06/2005 9:27:01 AM PDT
by
Tuba Guy
(' Only YOU Can Prevent Hillary! ')
To: kiriath_jearim
Paging Bobby Ewing. Mr. Bobby Ewing please pick up the white courtesy phone outside the dreaming shower.
8
posted on
06/06/2005 9:28:02 AM PDT
by
Dahoser
(Ok, shut down Gitmo. I vote to let the vermin swim home....after putting pig blood in the water.)
To: Paradox
That was one of my favorite movies growing up!Mine, too!
9
posted on
06/06/2005 9:46:55 AM PDT
by
Puppage
(You may disagree with what I have to say, but I shall defend to your death my right to say it.)
To: kiriath_jearim
"It consists of a reservoir of thick iron plates..." ...thus enabling the wearer to actually walk on the ocean floor.
10
posted on
06/06/2005 9:56:15 AM PDT
by
VaBthang4
("He Who Watches Over Israel Will Neither Slumber Nor Sleep")
To: kiriath_jearim
PETA will be PO'ed at robbing oxygen from the fishes.
11
posted on
06/06/2005 10:16:14 AM PDT
by
Ursus arctos horribilis
("It is better to die on your feet than to live on your knees!" Emiliano Zapata 1879-1919)
To: Ursus arctos horribilis
I like the invention that allows people to drink like fish. It's from Holland and comes in a green bottle.
12
posted on
06/06/2005 10:26:55 AM PDT
by
massgopguy
(massgopguy)
To: kiriath_jearim
Hmmm, someone please name 3 modern inventions made by a muslim (besides hijacking aircraft and algebra.
A Nobel prize winners out there besides Arafat?
great culture.
13
posted on
06/06/2005 10:32:22 AM PDT
by
zek157
To: kiriath_jearim
I call bulls***. Seawater is typically less than 10 ppm for oxygen content - if you're going to match the normal proportion of the atmosphere and feed a diver 21% oxygen by volume (go below 16.5% and you'll black out), then for a normal tidal breath of 500 ml, it'll have to contain 105 ml (at 1 atm) of oxygen per breath. Typical resting respiratory rate for adults is maybe 15 breaths per minute, so you have to come up with 1575 ml of oxygen per minute.
So, bottom line, at 10 ppm you'll need to process 157,500,000 ml of seawater per minute, or 157,500 liters per minute. Now, a fairly high-powered shop vac will suck in 125 cubic feet per minute, or about 3500 liters per minute, so imagine something that sucks in water 45 times faster than a shop vac, take that something and strap it to your back, and that's what we're talking about. And this is a best-case scenario - the minute you have to move or exert yourself or anything, your respiratory rate and oxygen requirements are only going to increase. Hope whatever this thing is, it comes with a hell of an extension cord ;)
14
posted on
06/06/2005 11:00:41 AM PDT
by
general_re
("Frantic orthodoxy is never rooted in faith, but in doubt." - Reinhold Niebuhr)
To: zek157
1) Children suicide bombers;
2) Rocks as bullets;
3) Man-camel reproduction
To: general_re
I like the general idea of this general_re calculation, but a similar calculation would seem to show that large fish (e.g., large sharks) could not exist (when it uses its muscles, it would need too much oxygen).
To: Ships of Wood, Men of Iron
Ah, it's much easier for fish - they're heterothermic (cold-blooded), so they don't need to expend lots of energy maintaining a high body temperature, among other things. Nor do they have large brains with the attendant fuel requirements. Etc., etc. - fish have much, much lower oxygen requirements than people, so they're perfectly happy with 5-7 ppm oxygen for their environment, versus the 160,000 ppm your body likes to have :)
17
posted on
06/06/2005 11:31:33 AM PDT
by
general_re
("Frantic orthodoxy is never rooted in faith, but in doubt." - Reinhold Niebuhr)
To: general_re
This post contains all the things I love about the posts on FreeRepublic.
Nice, concise and humorous.
Plus all of us who received woefully inadequate public school educations can grasp the science involved.
Thanks
To: Anvilhead
Why, thank you. The short version is that seawater just doesn't have enough oxygen in it to make this feasible - not that I can see, anyway ;)
19
posted on
06/06/2005 12:12:18 PM PDT
by
general_re
("Frantic orthodoxy is never rooted in faith, but in doubt." - Reinhold Niebuhr)
To: kiriath_jearim
Decrease the pressure - gas dissolved in the liquid releases the gas. What Editor/Proof-reader let that sentence get to print?
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