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On Nov 16, 2017, at 2:58 PM, John Denker via Phys-l <phys-l@mail.phys-l.org> wrote:
On 11/16/2017 12:10 PM, Peter Schoch asked:
Does anyone know anything about this? We'd like to try and rehab it and
get it working if it is not too costly in time or money.
I strongly suspect you could build a tunneling microscope
(STM) /from scratch/ for a fraction of the time and money
it would take to rehab a 1940s electron microscope. And
it would be more versatile, and easier to use, and with
better resolution, and safer, and, and, and.
https://cornellmakers.wordpress.com/2015/04/12/stm/
power supply plug is 8 prongs
We're talking about high-precision constant-voltage or
constant-current supplies, with lots of tricky tune-up
required.
needs a water supply (for cooling) not a vacuum pump
Every EM needs a vacuum pump. If it already has one,
and you're told it needs one, then it needs a /new/
one. It's like a craigslist ad for a car that "needs
a transmission".
===================
A 1940s EM /even in perfect working order/ would not
be much fun.
Not to put too fine a point on it, but the last time
I got my hands on a freebie electron microscope, it
was many decades more modern than that, and I did
the exact opposite of rehabbing it: I stripped out
the useful stuff, including the high-vacuum pump, the
forepump, valves, fittings, modular power supplies,
mounting rack, etc..... and junked the rest.
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