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Speaker 1: Mosey dot com. That's m o z y dot com

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Speaker 1: and save ten with promo code brain Stuff. Welcome to

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Speaker 1: brain Stuff from how Stuff works dot com where smart happens. Hi,

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Speaker 1: I'm Marshall Brain with today's question, what a balloon filled

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Speaker 1: with vacuum instead of helium float? At sea level? Air

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Speaker 1: weighs about one point to five grams per leader. A

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Speaker 1: leader of helium, on the other hand, weighs about point

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Speaker 1: one eight grams. If you weigh a one leader bottle

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Speaker 1: filled with air and then weigh the same bottle filled

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Speaker 1: with helium, it will weigh about one gram less. If

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Speaker 1: the bottle itself weighed less than a gram, you couldn't

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Speaker 1: weigh it at all because it would float. You would

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Speaker 1: have to turn the scale upside down and put it

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Speaker 1: above the floating bottle to check its negative weight. Generally,

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Speaker 1: a balloon has to be several leaders in size before

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Speaker 1: that one gram per lead or weight difference of helium

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Speaker 1: versus air is enough to overcome the way to the

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Speaker 1: balloon itself and float. If you could somehow fill a

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Speaker 1: one leader bottle with a vacuum, it would float even better.

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Speaker 1: A perfect vacuum ways zero grams, So a leader of

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Speaker 1: perfect vacuum ways zero grams, and that's point one eight

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Speaker 1: grams less than a leader of helium. The problem, of course,

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Speaker 1: is that building a lightweight container that can hold a

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Speaker 1: vacuum is not nearly as easy as building a container

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Speaker 1: that can hold helium. The phrase nature of whores of

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Speaker 1: vacuum sums it up nicely. If you could figure out

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Speaker 1: a way to do it, however, you could be set

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Speaker 1: your vacuum balloon would float even better than a helium balloon.

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Speaker 1: Now that you don't need to have a perfect vacuum

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Speaker 1: for this to work, any air that you take out

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Speaker 1: of the container helps a vacuum balloon to float. For

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Speaker 1: more on this and thousands of other topics, visit how

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Speaker 1: stuff works dot com. Your photos, music and documents are irreplaceable.

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Speaker 1: and save ten percent with promo code. Brain stuff at

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