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Underwater breather has raised $800k+ despite being scientifically impossible

indiegogo.com

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Re: Underwater breather has raised $800k+ despite being scientifically impossible

#5
I'm not convinced by either side. The "scientific explanation why it is impossible" stresses the 230 liter/min that must pass through the device. While this number sounds large, one cubic meter holds 1000 liter.

But yes, an independent test would be great.

Re: Underwater breather has raised $800k+ despite being scientifically impossible

#6
post #5

I'm not convinced by either side. The "scientific explanation why it is impossible" stresses the 230 liter/min that must pass through the device. While this number sounds large, one cubic meter holds 1000 liter. But yes, an independent test would be great.

This is 100 l/min : https://www.youtube.com/watch?v=gauj_2nbjkU

Re: Underwater breather has raised $800k+ despite being scientifically impossible

#7
post #5

I'm not convinced by either side. The "scientific explanation why it is impossible" stresses the 230 liter/min that must pass through the device. While this number sounds large, one cubic meter holds 1000 liter. But yes, an independent test would be great.

This is 100 l/min : https://www.youtube.com/watch?v=gauj_2nbjkU

Uhm.. yes... thanks. I have a pretty solid understanding of volumes. And a youtube-video of "100 l/min" does not qualify as scientific argument for me.

The relevant questions for me are:

a) What's the actual active surface of the gills?

b) Is the device actively sucking in water or does it rely on immersion alone?

It is pretty easy to fork through thousands of liters per minute (ever cleaned a pool?).

Yes, I am still very skeptical, but I do give people who put their name behind something at least the benefit of the doubt.

Re: Underwater breather has raised $800k+ despite being scientifically impossible

#9
post #8

The last update promises they will post a longer demo video soon. Maybe the whole 45 minutes? If the device in the old video ( https://youtu.be/obqxzmmv7uM ) is fake, how did it work? Where did the air bubbles come from?

The initial ones could come from the lungs of the person.

When you do a free dive you pump your lungs full of air and gradually release that air over the course of the dive. A trained swimmer can easily swim without breathing for 50 meters, producing air bubbles all the time. (EDIT: active swimming, aiming for distance. I had to do this when I got my lifeguard certification - IIRC 25m sufficed to qualify, but everyone did 50m).

That video is unfortunately way too short to prove anything.