pdp1@EARTHLINK.NET on sat 16 oct 04
Hi Ivor, Louis, Vince...all...
Another link...a little more information anyway...
http://www.murata.com/opt/lumicera.html
A little below...
----- Original Message -----
From: "Ivor and Olive Lewis"
(ye) Thanks Phil,
One of the things folk may be forgetting is that the
definition of
Ceramic used in Industry encompasses all materials made from
the
Treasures of Mother Earth via the application of Heat. We
only use a
small part of that spectrum, just a few things dominated by
the SiAl
minerals.
(mim)Yes, quite so...
My own work, with Tungsten Carbide, I suppose falls
into that broad range...
(ye)I was involved with Ceramic Magnets back in
1950's, Barium
Ferrite ! !
(mim) Cool...! do you still have some of them? Holding notes
on the refridgerator or as may be? ( being playful...) These
are very stong I think, yes?
As you know, if one orient a length of Iron or Steel, as
some bar or rod or a Needle...if one orient it in a North -
South more-or-less axis...whether in the ground or just
sitting somewhere, 'Nails' even in buildings...it will
in-time become sufficiently
Magnitized just like that, to point to Magnetic North if
allowed to, such as if it were suspended from a string in a
balanced way...or if floated on something in liquid...
(ye)
Let's design a lens material that will be lightweight but
durable.
What other properties would you propose?
(mim)Ohhhhh...I am afraid I know almost nothing about
Lenses, other than some notion of them basically as light
benders...or as gatherers variously of whatever sections of
the electro-magnetic-spectrum they may be suited to do...or,
figuratively, as something which gathers some interpretation
or processing of some kind of energy
into some useful focus or work.
I am aware of some of the practical properties of a 'pin
hole', which, in practice, is something of a lense I
believe, even if it is a space in something, as it were,
itself occupied more or less, by nothing...
I know one may make a sort of pin-hole between three finger
tips, and through it, be able to see small things much
closer, and larger than the otherwise unaided Eye would
do...
Which makes for a handy field microscope of sorts...
(ye) I have a feeling that this stuff contains Titanium and
is
manufactured
via Plasma Fusion under Vacuum or Argon. Truly Ceramic.
Hmmmm...!
Well...I hope we may find out...!
Is is curious...
(ye)All the best,
Ivor.
Ivor Lewis.
Redhill,
S. Australia.
(mim)Same here...
Phil
el ve
Ivor and Olive Lewis on sat 16 oct 04
Thanks Phil,
One of the things folk may be forgetting is that the definition of
Ceramic used in Industry encompasses all materials made from the
Treasures of Mother Earth via the application of Heat. We only use a
small part of that spectrum, just a few things dominated by the SiAl
minerals. I was involved with Ceramic Magnets back in 1950's, Barium
Ferrite ! !
Let's design a lens material that will be lightweight but durable.
What other properties would you propose?
I have a feeling that this stuff contains Titanium and is manufactured
via Plasma Fusion under Vacuum or Argon. Truly Ceramic.
All the best,
Ivor.
Ivor Lewis.
Redhill,
S. Australia.
----- Original Message -----
From:
To:
Sent: Friday, 15 October 2004 3:11
Subject: Re: Surfing with Helen Bates - Camera with a ceramic lens -
October 13th., 2004
> Hi Ivor, Helen, all...
>
>
> ....found this...
>
>
> http://www.logicandsanity.com/archives/2004/08/ceramic_lense.html
>
>
> ...it is not much, but a little dab...
>
> Curious tho', isn't it?
>
>
> Phil
> el ve
>
>
> ----- Original Message -----
> From: "Helen Bates"
>
>
>
> Camera with a ceramic lens...
>
> I'm sending this link separately because it's a link in the
> current
> online version of Popular Science, and won't be online in
> this form for
> more than a few weeks at most.
>
>
> > 9,00.html>
> "Casio=92s Unlikely New Lens Material Delivers Sharp Optics in
> a Superslim
> Package. - Popular Science"
>
> Helen
>
>
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