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ZL1UIC > INFO 24.07.02 17:09l 22 Lines 593 Bytes #999 (0) @ WW
BID : 440147ZL1UIC
Read: DB0FHN GUEST
Subj: re: balloons (G0TEZ)
Path: DB0FHN<DB0ZWI<DB0HOT<OK0PBX<OK0PAD<OK0PPL<RZ6HXA<SP7MGD<ON0BEL<VK3TE<
ZL2TZE<ZL2TZE<ZL2WA<ZL1UX
Sent: 020724/0804Z @:ZL1UX.#20.NZL.OC #:37629 [Hamilton] FBB7.00i $:440147ZL1UI
From: ZL1UIC@ZL1UX.#20.NZL.OC
To : INFO@WW
>
> There is a subtle but significant error in Ian's (G0TEZ) statement:
>
> >> Helium is twice the density of Hydrogen so there is only
> >> half the lifting force ..
>
> The densities of air, helium and hydrogen at 1.0132 bar and 0 DEG
> Celsius are 1.293, 0.178 and 0.09 kilograms/cubic meter.
-------------------------------chop-----------------------
Wouldn't it have been easier to compare the molecular weight????
73 - Allen, ZL1UIC @ ZL1UX
Message timed: 19:43 on 2002-Jul-24
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