Thanks - CAD Help

Colleagues Thanks to all of you who responded with help in translating CAD files into a format suitable for drawing packages. I was guided to Paintshop Pro v5, which I already had, but then found that my venerable CAD program (TurboCAD v3) produces a rather non-standard .dxf format which

Design challenge

Hi all, I have a question/challenge to all you sundial designers: what is the most accurate design for a Standard Time dial? The reason behind the question is to find a way to stop members of the public looking at a public dial, inspecting their watches, and concluding that dials never tell

Re: sundial taxonomy

Hi All, I'll buy this, and put in in the next draft of the Glossary. I really don't want a different term for every possible type of dial! Regards, John Dr J R Davis Flowton, UK 52.08N, 1.043E email: [EMAIL PROTECTED]

Re: Azimutha Sundial (once more)

Hi all, I've been watching this thread with interest, and have been honoured that the draft Sundial Glossary which I'm editing for the BSS has been quoted a few times for the definitions. I should say, though, that these definitions are not yet definitive(!) and I am still working to refine

Re: shadow velocity shadow tracing

John Carmichael wrote (replying to Chris Lusby Taylor): You're right! I realized as soon as I sent my message that a small diameter floodlight with a wide beam would be better than a tight beam, because it must illuminate the entire style and not just a portion of it. A drawback with the

Introductory astronomy sites

Hi all, Please can anyone point me at suitable URL's of basic astronomy, capable of answering questions of the why does the sun rise in the East and what causes the seasons? type. I have a contact at the local museum who is putting together an astonomy/sundial trail for primary schoolchildren

Chinese dial

Hi Dialling Colleagues, A member of the public (i.e. not a sundial enthusiast) contacted me for help with an item which was sold to him by an antique dealer as a mid-18th century Chinese sundial. He wanted to know something about it, and particularly how to set it up and read the time. I've

Sundial Glossary Update

Happy New Year to all diallists! To prove that I haven't got too much of a hangover, a new version (including downloadable files) of the Glossary is now online at www.btinternet.com/~john.davis This version has a major upgrade of the text, based on all the inputs I have gratefully

Anodised Sundials

Hi Tony (Moss), Just thought I'd let you know that I'm underway with some anodising experiments (better than Xmas shopping, anyway!). By following your instructions, I've succeeded in getting a nice yellow finish on a 10x10cm square of aluminium. It's clearly an alloy of some sort, but I don't

Re: Solstice Perigee

Roger, I'm not sure of the exact time of Full Moon, but according to my Psion the declination at midnight will be 19deg26min. I hope that helps! John Dr J R

A Sundial Glossary

Dear Dialling Colleagues, The British Sundial Society (BSS) has decided that a Glossary of dialling terms would be a good idea. It would have two main purposes: - to provide a refererence source for newcomers to dialling, and - to try to set preferred definitions of the terms, symbols and

Re: Making Metal Sundials II

This is real cookery! As an alternative to etching face down in a flat dish, it is simple to use a vertical tank as supplied for etching PC boards. These are tall and very thin - about 1.5 cm wide, and big enough to take the plate that is being etched. Easy to make with two sheets of perspex

Re: More on Metal Sundial Processes

Tony, Great stuff! Can you give any indication of how much currect is needed (per square inch of object?). Also, have you ever tried masking some areas of the film ( hour numbers) before the dying process, so that they come out a contrasting (or clear) colour? Cheers, John

Re: Laser Trigon

, John Davis

Re: A Tough One?

latitudes. You may have to iterate around the above loop a couple of times if there is significant uncertainty as to the declination. I hope this helps - I have the Excel plots from the Wendon Lofts dial if they are of any use. John Davis

Re: Heliograph

, and there are various quotes from Geronimo, who believed the flashes were spirits! All I need to do now is find someone else with a heliograph, and then we can have aconversation (after I've learned Morse!) Regards, John Davis

Re: plotting timelines for giant sundials

. That's the theory - the proof will come next month! Any other suggestions welcomed. John Davis

Latin motto

SINE - it's written on a banner. Thanks, John Davis N52 5m E1 3m

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