can't wait to hear about that one, HK...

in our news, today DD5 did the old inflate-the-balloon with CO2 experiment, and had this to say about it. maybe this shouldn't really be a brag - it might be best in the quirky thread, but anyhow...

DD5: neat! but the REAL question, now that it's conveniently inside this balloon, is... is it lighter than air like helium? i know there's C02 up in the atmosphere, so my hypothesis is that it will float.
me: why don't you try it? (i tie off the balloon and hand it to her - she lets it go.)
DD5: huh. carbon dioxide must actually be heavier - or at least as heavy as air. i wonder how it gets up there?
me: you have a think on that.
DD5: (smacks head) OH! it's a GAS. diffuse particles. so it mixes with other stuff. plus - there's wind and i guess maybe heat?
me: please don't smack your head every time you work something out - you're going to have a dent.

Last edited by doubtfulguest; 08/26/13 12:18 PM.
Every Sunday it brooded and lay on the floor. Inconveniently close to the drawing-room door.