Nuclear submarines and the international space station have long used systems that generate oxygen from water by performing 'Electrolysis' – the separation of oxygen from hydrogen. However, these systems require too much energy for standard submarines, let alone divers, to use.
Bodner told IsraCast that he got the idea for his invention from fish, who do not perform chemical separation of oxygen from water. Instead, they use the dissolved air that exists in the water in order to breathe.
The system uses a physics principle known as "Henry's Law," which states that the amount of gas that can be dissolved in a liquid body is proportional to the pressure on the liquid body.
Using a rapidly rotating centrifuge to create increased pressure inside a small sealed chamber containing sea water, Bodner was able to extract enough oxygen from the water for a human being to breathe.
A laboratory model of the system has already been built and tested. It runs on rechargeable batteries, and can be worn in the form of a vest.
Bodner is now building a full-sized prototype, has already received a patent for the invention in Europe, and is expecting to receive one in the US as well.