In a message dated Fri, 13 Apr 2001 3:45:10 PM Eastern Daylight Time, Dave McGuire <mcguire(a)neurotica.com> writes:
<<
U of M as in Maryland? I'm in Laurel. :-)
So far I've found endless fascination in chips and power transistors.
But, the most unbelievably fascinating thing that I've seen in that
scope was something I thought would be boring...a blown tungsten lamp
filament! I just did some quick scans of some of the
electromicrographs I've done lately. They can be seen at
http://www.neurotica.com/sem/images if you're interested. The blown
tungsten lamp filament pics are filament-1.jpg and filament-2.jpg.
>>
Dave,
Just out of curiosity, have you found any of that microart burned on I.C.'s yet?
-Linc.
'ello,
I'm subbed from home now and for some reason (probably lack of caffeine)
made a bit of an arse of rebuilding the email server at work so it won't
accept dialup connections. If anyone's replied to my missives since Thursday
afternoon (UK time) would they please either repost or mail direct to me?
cheers!
PS coming soon - boxed Camputers Lynx :o)
adrian/witchy (Adrian Graham)
www.binarydinosaurs.co.uk - the Online Computer Museum
0:OK, 0:1
Just to let everyone know, I've been watching the conversation on the
list the past few days regarding the TI 990 series of minicomputer
systems, and as a result of what appears to be widespread demand, I've
begun scanning a number of documents (datasheets, mostly, but also two
bound volumes) regarding the TI 990 systems.
These are primarily datasheets that my father recieved around twenty
years ago when he was purchasing and using these systems as Chrysler
Corporation. I think they've been sitting in the basement ever since.
They're in pretty good condition, and they make interesting reading.
I've got a small page set up as a jumping-off point for accessing
datasheets about various models of equipment available at the following
URL:
http://www.diablonet.net/museum/ds990.html
Please excuse my asthetics; some people say it's slightly hard to read.
To jump right into the documentation directories, you can just go here:
http://www.diablonet.net/museum/ti990
I hope someone out there finds these useful, or at least marginallly
interesting!
--Sean Caron (root(a)diablonet.net) | http://www.diablonet.net
The microscope has a maximum magnification of about 150,000X.
-Dave McGuire
On April 13, Robert wrote:
> What is the magnification?
>
> Dave McGuire wrote:
>
> > On April 13, Peter Joules wrote:
> > > > http://www.neurotica.com/sem/images if you're interested. The blown
> > > > tungsten lamp filament pics are filament-1.jpg and filament-2.jpg.
> > >
> > > That's amazing. I take it that the crystals had grown on the filament
> > > during the life of the bulb had they? Does anyone know the mechanisn for
> > > this?
> >
> > It is my understanding that those crystals grew during the
> > "flameout" of the filament.
> >
> > I spent a solid six hours one night going over that filament. I
> > wish Polaroid 550PN film wasn't so damn expensive. I need to build a
> > digital imager for my microscope.
> >
> > -Dave McGuire
Sorry about that.
Pressed the <SEND> button just as the
net was going down :(
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On April 13, Peter Joules wrote:
> > http://www.neurotica.com/sem/images if you're interested. The blown
> > tungsten lamp filament pics are filament-1.jpg and filament-2.jpg.
>
> That's amazing. I take it that the crystals had grown on the filament
> during the life of the bulb had they? Does anyone know the mechanisn for
> this?
It is my understanding that those crystals grew during the
"flameout" of the filament.
I spent a solid six hours one night going over that filament. I
wish Polaroid 550PN film wasn't so damn expensive. I need to build a
digital imager for my microscope.
-Dave McGuire
On Fri, 13 Apr 2001 11:51:56 -0400 (EDT) Dave McGuire
<mcguire(a)neurotica.com> writes:
> On April 13, Jerome Fine wrote:
> > Does anyone on the list run RT-11 still other than Megan Gentry?
> > Do you tinker with the operating system code at all? Does anyone
> > care about the RT-11 Operating System?
>
> I care about it; I like it quite a bit. I have a Micro 11/73
> running v5.4, and a Kevex X-ray analyzer (an accessory to the
> electron
> microscope) that has a pdp11/73 in it that runs RT-11.
>
>
> -Dave McGuire
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On Apr 13, 9:16, Tom Uban wrote:
> I see you are looking for a TU56. Do you have a TC11 to control one?
Not yet :-) Is that an offer?
I've got the tapes for it :-)
--
Pete Peter Turnbull
Network Manager
Dept. of Computer Science
University of York
On April 13, John Foust wrote:
> Isn't it a bit finicky when it comes to vacuum pumps,
> cryogenics, etc.? After hanging out on the microscopy list,
> I get the impression that even though people seem to be
> giving away old electron microscopes as often as people
> give away old mainframes, they'd be a bit hard to
> maintain for home use.
Not at all. Cryo setups are almost never really needed, unless
you're running a cold trap on your vacuum system or an Xray detector.
And there's nothing finicky about vacuum pumps...get a decent one,
turn it on, and it just works.
I'd say taht, for the adventurous hobbyist, an SEM at home is a very
doable thing. I've had mine for about a year and have learned a great
deal and had a huge amount of fun.
What microscopy list are you talking about? Sounds like something I
ought to be on.
-Dave McGuire
I'll join in ...
SWTPC 6800 with 6809 CPU
Zx81
BBC-B . A killer homecomputer, if not for the limited memory..
M68000 SBC ( with a 4MHz 68000...)
2 Mac Plus
2 Compaq Lunchboxes with plasma scrren.
PDP8/L , power supply/ transformer dead . Anybody has some numbers on the
secondary voltages so i can rewire a new one ?The various pdp8 websites do
not have this information...
ASR33, needs a clean and some debugging....
PDP8/E with TU56, 2x RK05, IOMEC papertape reader, Facit punch
PDP8/F with TU56 and DSD440
PDP8/A with TU56 and RL01
VT100, hacked about to contain an 11/23, with external ST412, runs RX11.
Anybody has some RT11 manuals available.
Tek4014 in running state
Philips P856 16 bit mini, no peripherals, no software...
A TTL based 12bit computer of my own design.
Plus some spares and various bits&pieces, and no room left...
Jos Dreesen
