I once told a chemistry professor that if you could inflate a balloon
with a vacuum
it would float much better than one inflated with helium. He stated that
vacuum inflated one would
not float because the helium balloon floats only because helium is
lighter than air.
Needless to say I won the argument after some discussion of why objects
float
in the first place.
73
Bill wa4lav
At 08:59 AM 5/11/2011 -0400, you wrote:
>"Just curious: I know you say the tube was not in the water, but would
>an unenergized glass tube be damaged from being submerged in a flood
>for a day or two? "
>
>Since the tube is in a vacuum, nothing inside will be hurt. Perhaps the
>big issue is that a big tube like the 3-1000 will try very hard to float
>down the river, since it will not like being under water. Sort of like the
>Japanese fishing floats that used to wash up on the West Coast beaches. So,
>new original stock vacuum tubes in their original boxes are likely to go
>away during a flood.
>
>If the tube remains, there could be corrosion of the tube base and plate
>cap.
>
>73, Colin K7FM
>
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