helium balloons

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helium balloons

Postby pilvikki » 20 Oct 2011, 23:16


you know, when you buy a helium balloon, it's in the ceiling all day. and then it dies, no matter how tight you've closed it off.

where does the helium go? or how?
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Re: helium balloons

Postby kg » 21 Oct 2011, 03:04


The helium percolates through the skin of the balloon thus reducing the amount inside to provide lift.

It also escapes through the imperfectly sealed end of the balloon.

The ballons are usually made of mylar so the rate is low but helium is such a small atom that it's hard to keep it in anything for any length of time and especially in a 50 cent balloon.
If you blow up a normal rubber balloon with helium it only lasts for a few hours.

http://www.thenakedscientists.com/forum/index.php?topic=6078.0
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Re: helium balloons

Postby pilvikki » 21 Oct 2011, 06:12


thanks! that was interesting!

i do love the comments, too, and how people don't read [get?] a previous posts and will then state as fact what the previous guy just proved wrong...

:crazy:
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Re: helium balloons

Postby Ice.Maiden » 21 Oct 2011, 12:07

The shiny balloons can often last for several weeks before the helium eventually escapes into the air.
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Re: helium balloons

Postby kg » 21 Oct 2011, 13:14


pilvikki wrote:i do love the comments, too, and how people don't read [get?] a previous posts and will then state as fact what the previous guy just proved wrong...


While some of that is posting at the same time that the previous poster is posting, or before that previous post appears (I have done that quite a bit), some of it is not reading previous posts before posting. That, and/or refusal to accept any other explanation than their own preconceived ideas on the subject in spite of all proof to the contrary.

Happens all the time (I'm sure you've noticed)! ;)
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Re: helium balloons

Postby pilvikki » 21 Oct 2011, 23:10


Happens all the time (I'm sure you've noticed)!


i'm sure i have NO idea whatcha talking about...

:lmao1:
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Re: helium balloons

Postby Ice.Maiden » 22 Oct 2011, 08:15

:vrysad:
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Re: helium balloons

Postby kg » 22 Oct 2011, 08:40


Why the sad face? Did you think we were talking about you? No, we were talking about the comments on the site that I posted. ;)
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