Apr 2014 2:02
Subject: Re: Design of Cards for Campbell Stokes Sunshine Recorder
Brooke, I have a C-S sunshine recorder with slots in the arms for insert cards;
the slots allow inserting the cards in two N-S positions. I have, I believe,
two types of cards to fit my slots. I don't remember what
The fireproofing is saltpetre if I remember correctly.
Mike Shaw
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I think Mike may have the wrong information. I can speak from personal
(teenage) experience of making very good fireworks and soaking paper in
saltpetre solution for the touch paper, which will then smoulder nicely.
Saltpetre is one of the essential ingredients in gunpowder.
I suspect that
Doug,
You’re right - my memory is failing.
See: http://www.wikihow.com/Make-Fireproof-Paper
Mike
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There's a very full and well-illustrated description of the Campbell Stokes
sunshine recorder, with a reproduction of the equinoctial card in
Handbook of Meteorological Instruments, HMSO 1956, reprinted 1961.
This tells us, inter alia, that the cards are made from good quality paste
board, not
for Campbell Stokes Sunshine Recorder
I think Mike may have the wrong information. I can speak from personal
(teenage) experience of making very good fireworks and soaking paper in
saltpetre solution for the touch paper, which will then smoulder nicely.
Saltpetre is one of the essential ingredients
On 19/04/2014 14:40, Tony Moss wrote:
I can't help adding that as youngsters we painted
designs on paper using a strong saltpetre in a continuous line
with a paper toy pistol 'cap' at the end of the trail. When
thoroughly dried and ignited at the
Brooke, I have a C-S sunshine recorder with slots in the arms for insert
cards; the slots allow inserting the cards in two N-S positions. I have,
I believe, two types of cards to fit my slots. I don't remember what
each card type is meant for, however. The glass spherical ball is about
92 mm
