21 Jun
2004
21 Jun
'04
9:23 a.m.
Dwight K. Elvey wrote:
But that would cause a current draw, requiring a larger power requirement.
You'd need to haul more batteries/solor panels/etc up to the moon.
From:
"Kevin Handy" <kth(a)srv.net>
Geoffrey Thomas wrote:
I think you would have problems with cross-talk between the
open tubes, unless you limited your design to a single tube,
or had large spaces between the tubes.
The glass does more than just hold the vacuum, it is also an
insulator.
Hi
Just some wire mesh that is charged can make a shield.
You just have to herd these pesky little electrons.
Dwight
This is
more of what I'm getting at. Does it matter that some knowledge
is lost as generations go on? Are we ever going to need to go back to
tubes to design electronic circuits?
There was an idea some time back that if we ever get to the moon that we
could be using "open-air" valves (tubes) in the vacuum there for high
powered devices - with the benefit that goes with the better radiation
resistance that goes with valve technology.It would be quite cool to watch a
tv picture on an open CRT methinks.But don't walk between the plates.
Keep those old Mullard/Thorn/EMI books - GE in the states?