Re: material properties of 3d nanotube matrix

From: Michael Richards (Michael.Richards_at_Gartner.com)
Date: 07/28/04 

Date: 28 Jul 2004 23:00:37 GMT

Jimi <abc@def.com> wrote in message news:<ce712i02suv@enews2.newsguy.com>...
> Has anyone considered that this material would be lighter than air?
> Perhaps it could be used a durable permanent floating
> platform/airship?

If you could create an airtight seal and pump out all the air, and if
the structure was strong enough to keep out the outside air, then this
may work. Dirigibles are currently filled with something because they
need it to stop the structure from imploding. This however could just
use vacuum, and hence would be more efficient, and has no danger of
exploding (like hydrogen) and looks like it would have several
advantages over current dirigibles.

Of course a hole in the seal could still cause the structure to fall.
This could possibly be fixed by having several hundred sealed
compartments, which would allow time for the hole to be repaired.

Michael

Relevant Pages

  • Re: guitar refinish
    ... At that pitch the sound output from the the hole and the top is ... thanks for that simple answer to the fundamental operating modes of the guitar that has puzzled me for a while. ... resonance directly, and so, indirectly, the pitch of the 'main air' ...
    (rec.music.classical.guitar)
  • Re: evolutionary dead end?
    ... Opening a hole in the guitar body effects the different air resonances ... In the low 'Helmholtz' type resonance the pressure changes everywhere ... I simply stated an open harmonic bar lowers the plate frequincy." ...
    (rec.music.classical.guitar)
  • Re: Ever done this?
    ... | One very embarrassing moment for me was a demo to a teacher in our school, ... |> the 110 bell circuit already wired to one of the switches. ... |> Second tap and the box breaks off, the bell starts ringing and air ... |> standing there under a ringing bell with my finger blocking the hole. ...
    (alt.security.alarms)
  • Re: need advice for homade propane furnace
    ... I've used every combination of upwind/downwind and pipe size combo's you ... Your probably not getting enough air in at the burner. ... smaller than 1/16" so that's what size hole I have for fuel jet. ...
    (rec.crafts.metalworking)
  • Ever done this?
    ... knock out the knock out on the back of the box - careful of the 110 bell circuit already wired to one of the switches. ... Second tap and the box breaks off, the bell starts ringing and air shoots out of whats left of the pipe ... I put my finger over the hole to keep whats left of the air pressure in the system until I can get the water shut off ...
    (alt.security.alarms)