Breathe Like A Fish Thanks To Alan Bodner
Alan Izhar-Bodner, an Israeli inventor, has developed a way for divers to breathe underwater without cumbersome oxygen tanks. His apparatus makes use of the air that is dissolved in water, just like fish do.
(From Breathe like a fish!)
The system uses the "Henry Law" which states that the amount of gas that can be dissolved in a liquid is proportional to the pressure on the liquid. Raise the pressure - more gas can be dissolved in the liquid. Decrease the pressure - gas dissolved in the liquid releases the gas. This is exactly what happens when you open a can of soda; carbon dioxide gas is dissolved in the liquid and is under pressure in the can. Open the can, releasing the pressure, and the gas fizzes out.
Bodner's system apparently uses a centrifuge to lower pressure in part of a small amount of seawater taken into the system; dissolved gas is extracted. The patent abstract reads:
A self-contained open-circuit breathing apparatus for use within a body of water naturally containing dissolved air. The apparatus is adapted to provide breathable air. The apparatus comprises an inlet means for extracting a quantity of water from the body of water. It further comprises a separator for separating the dissolved air from the quantity of water, thereby obtaining the breathable air. The apparatus further comprises a first outlet means for expelling the separated water back into the body of water, and a second outlet means for removing the breathable air and supplying it for breathing. The air is supplied so as to enable it to be expelled back into the body of water after it has been breathed.
Human beings have been thinking about how to breathe underwater since they started swimming. This long-held desire plays an important part in one of the first great science fiction novels, Jules Verne's 20,000 Leagues Under the Sea.
It consists of a reservoir of thick iron plates, in which I store the air under a pressure of fifty atmospheres. This reservoir is fixed on the back by means of braces, like a soldier's knapsack.
(Read more about Jules Verne's diving apparatus)
(Check out this Functional Captain Nemo Diving Suit)
More recently, I distinctly remember an episode of the sixties sf series Voyage to the Bottom of the Sea in which a scientist decides that the best way to breathe underwater is to give himself gills. Alas, once equipped with gills, and fully acclimated to life in the sea, Dr. Jenkins and his associate lie in wait outside the submarine Seaview, converting every diver who emerges from the ship into mermen.
(From The Amphibians - aired Mar-08-1965)
And, of course, everyone remembers the scene in which intrepid Jedi Obi-Wan Kenobi and Qui-Gon Jin don pencil-sized breathing masks to explore the swamp lakes of Naboo in The Phantom Menace. This trick is used again in the most recent Star Wars movie.
(Hmm, perhaps those small cylinders are centrifuges...)
Read more at Like a Fish: Revolutionary Underwater Breathing System. or take a look at more
Leagues Under the Sea. Also, an excellent recent novel, Starfish by Peter
Watts, refers to a "recycler" that can be implanted directly in the diver. Thanks to alert reader Adi for pointing this story out.
Scroll down for more stories in the same category. (Story submitted 6/1/2005)
Follow this kind of news @Technovelgy.
| Email | RSS | Blog It | Stumble | del.icio.us | Digg | Reddit |
you like to contribute a story tip?
Get the URL of the story, and the related sf author, and add
Comment/Join discussion ( 11 )
Related News Stories -
3D Printed Spherical Flying Machine
'Gold dots against blue, basketball-sized, twelve feet up....' - Larry Niven, 1972.
Nanotech Used To Create Custom Water Filters In Tanzania
'People started out squeamish about Clearsacs...'- Paolo Bacigalupi, 2015.
Google Project Soli - Control Devices With A Gesture
'He waved his hand and the circuit switched...'- Philip K. Dick, 1955.
NASA's Subvocal Speech System
'She took a subvocal input device from its rack...'- David Brin, 1990.
Technovelgy (that's tech-novel-gee!)
is devoted to the creative science inventions and ideas of sf authors. Look for
the Invention Category that interests
you, the Glossary, the Invention
Timeline, or see what's New.
'Runciter's body contained a dozen artiforgs...'
Artificial Gravity? Why Not?
'The artificial gravity-controls in the base of the ship... were being tampered with!'
Hackers Can Take Control Of Cars From Anywhere In The World
'The car faltered as the external command came to brake...'
Armed Drone Opens Fire
'Each a television eye and a sonic stunner...'
Robotic Exoskeleton Releases Man From Wheelchair
'This man was standing on two corrugated-soled titanium footplates...'
Oh, Just Let Robots Run Airports
I'd like a friendly robot to help me at airports.
How Smart Should AI's Be Allowed To Get?
'Every AI ever built has an electromagnetic shotgun wired to its forehead'
NASA Misses $5Trillion Funding Boost
'This must be a golden planet—this little asteroid.'
Kuwait Creates Mandatory DNA Database For Citizens
And who has the largest DNA database on its citizens?
Please, Please Let There Be Regenerated Teeth
Google AI 'Deep Dreams' Kubrick's 2001
'I was only trying to do what I thought best....'
The BLITAB: First Tactile Tablet for Blind People
Absolutely amazing development - now blind people can read the web!
Why, Oh Why, Must We Develop Robots That Run Faster Than I Do?
'The legs are long, curled way up to deliver power, like a cheetah's.'
Golf Robot Putts Out
'The robot solemnly hit a ball against the wall, picked it up and teed it, hit it again, over and again...'
Computer Finds Cancer Doctors Miss
The computer will see you now.
Would Robot Taxis Ease Carbon Emissions?
'He emerged and flagged down a robot taxi...'
More SF in the News Stories
More Beyond Technovelgy science news stories