[time-nuts] 1968 Scientific American Magazine: Cesium ClockStandards
alan.melia at btinternet.com
Wed Dec 10 09:31:24 EST 2014
Hi Dave, as a long time reader (since 1955) and subscriber I remember the
Amateur scientist pages ending in the 1980s. I think the contributer
retired. At around that time I think the many adherents formed the Society
of Amateur Scientists. Though I have not visited fot several years the web
site was www.sas.org and I believe had pdfs of old SciAm Amateur Scientist
I particularly remember one scary article about an X-ray generator that
consisted of a 6J5G tube ( I think a triode valve in the UK :-)) ) with a
piece of aluminium foil secured round the smaller diameter part of the top
with a twist of copper wire, and conected between the cathode pin and the
foil, a 2kV psu !! The end of the tube cathode (and heater wire) was clearly
visible through the top and formed a spot source of electrons. I believe an
X-ray plate of a hand was included in the article !!
There were many inovative ways of building quite sophisticated experiments.
Another I rememver was a Proton precession magnetometer using a radar
----- Original Message -----
From: "paul swed" <paulswedb at gmail.com>
To: "Discussion of precise time and frequency measurement"
<time-nuts at febo.com>
Sent: Wednesday, December 10, 2014 1:20 PM
Subject: Re: [time-nuts] 1968 Scientific American Magazine: Cesium
> Dave I do not know why but it was one of two things as I barely recall.
> Magazine format change (Need dumber for more readers) or the fellow died.
> That was a long time ago.
> I know as a kid that inspired me on more then one occasion to do
> They are still a good read. there was some pdfs at some sight or a book or
> On Wed, Dec 10, 2014 at 6:16 AM, Dr. David Kirkby (Kirkby Microwave Ltd) <
> drkirkby at kirkbymicrowave.co.uk> wrote:
>> I see this on eBay - it might interest some, and at $10 it will not
>> break the bank
>> BTW, does anyone know why the Amateur Scientist column was dropped in
>> Scientific American? Perhaps the thought they might get sued if a
>> suggestion was made to use anything more dangerous than a teaspoon of
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