How to Make Crazy Levitating Bubbles

Another of my Halloween Demonstrations. This simple but amazing video explains how everyday bubbles can float on a magic layer of air. It all has to do with density of air and some dry ice.
Air is less dense than CO2. It is mostly N2 and the bubbles magically float of the CO2.

Music: Kevin MacLeod

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    19 Discussions

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    drahcusbigcheeze

    Reply 8 years ago on Introduction

    I've never gotten it to work with a paper boat, but it can be done with a boat made of tinfoil.

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    n0ukfbigcheeze

    Reply 11 years ago on Introduction

    No, the paper boat would be heavier than any gas. As he said in the paragraph under the video, this works because the regular air (nitrogen, oxygen and the rest of the mix we breathe) in the bubbles is lighter than CO2 and the soap bubble encapsulating the air isn't heavy enough to counteract this difference. You could do this with about any heavier-than-air (denser) gas, but CO2 is the easiest to obtain in the form of dry ice. Nice touch at the end dowsing the candle by pouring the CO2 on it.

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    n0ukfbigcheeze

    Reply 11 years ago on Introduction

    The Saran Wrap would still be too heavy from its thickness. What is the thickness (and resulting mass) of the soap bubbles? Compare that to any other material you might consider using to attempt this feat.

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    pyrorowern0ukf

    Reply 10 years ago on Introduction

    Hey, just so you know, although paper MAY be too dense for this, aluminum foil would work very well. Don't forget that the net upward buoyancy force is equal to the magnitude of the weight of fluid displaced by the body. This means that if the boat can displace enough air, it can easily float. The metal in ships is far denser than the ocean around it yet they still float. I say give it a shot bigcheeze!

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    damastabigcheeze

    Reply 11 years ago on Introduction

    you just need to find something less dense then co2, like soap bubbles, you should try that!

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    n0ukfitsmanofpopsicle

    Reply 11 years ago on Introduction

    Your statement is incomplete. More complete would be "a container of X volume of air will support Y weight floating on sulfur hexafluoride."

    To demonstrate your point, how would you go about making sulfur hexafluoride?

    To demonstrate this compound you pointed out, I found this video:


    Though they didn't say why in the video, as with CO2 you want to purge this heavier-than-air gas from your lungs if you inhale it, or you'll asphyxiate.
    None
    ArbitrorZaphodQB

    Reply 10 years ago on Introduction

    How bout reading the description:

    sulfur hexafluoride is more dense then the surrounding air

    It doesn't even mention co2...

    None
    toogers

    11 years ago on Introduction

    nice, have you tried it with one of those bubble machines?