RE: How to Build a Diving Helmet: Underwater Exploration On a Budget

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How to Build a Diving Helmet: Underwater Exploration On a Budget

in technology •  8 years ago 

-doesn't look very efficient on air, but fun to read about.

technology
8 years ago by

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      ·  8 years ago 

    It isn't! But then, it doesn't need to be. The air does not come from scuba tanks after all, but from an electric air compressor on the surface.

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