Invisible Water Effect

3 Responses to “ Invisible Water Effect ”

  1. Thank you for sharing this video 😉

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  2. Hmm…Wierd… :s How does they do that?

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    PKM Reply:

    The tank is filled with a very dense gas (you see them filling it with a hose from a cylinder at the start). The title is German for “Ship floats on gas”. I think the gas is sulphur hexafluoride- it’s about 4 times as dense as air, enough for the boat to float on it, but only 0.6% as dense as water.


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