helium

[sparkydude]

quick question, when you buy a parcel from screwfix etc they pack the boxes with polythene bags filled with air, what if you filled them with helium? would the parcel cost less to post ????

 

[2scoops0406]

You need a lot of helium to make much of a difference, hence why those helium blimps are pretty large.

 

[DforDave]

Does anyone know the reason for my following question,

When you get a balloon ( birthday ) and it's filled with helium, after a while lets say 2 weeks or so, the balloon is a bit deflated but still rises. I know helium is lighter than air but why does the balloon deflate abit. ?

I think I know the reason for your question. It's because...

I've tried google helium but couldn't find the answer.

 

[sparkydude]

yeah but a balloon has quite a lot of power to hold things up in its own way , so i am sure in a big parcel you could get two balloons worth of helium in the box, sureley this would make a bit of diffeence?

 

[2scoops0406]

Not much, a cubic metre of helium will lift about a kilo, so not much use practically.