Re: Dyptich sundial - help!

Hi, Some more interesting information on the Boy Scouts Sun Watch. http://www.vintagerecipeblog.com/2016/03/the-ansonia-sunwatch-instructions.html?m=1 Note that the gnomon is not a string. Regards, Roderick Wall. - Reply message - From: "rodwall1...@gmail.com" To: "M

Re: Dyptich sundial - help!

Hi, For those who are interested. A Boy Scout Sun Watch. https://m.ebay.com.au/itm/RARE-1920-1922-ANTIQUE-BOY-SCOUTS-SUN-WATCH-COMPASS-ANSONIA-Co-NY/132733705686?hash=item1ee78b9dd6%3Ag%3AXFsAAOSw0lVa7z7H&_nkw=sun+watch+boy+scout&_from=R40=nc Regards, Roderick Wall. - Reply message -

Re: Is this sundial business 'genuine', or not?

Hi Rodger, Thanks for the discretion. Best regards, Roderick Wall. - Reply message - From: "Roger" To: "rodwall1...@gmail.com" , "Michael Ossipoff" Cc: "sundial list" Subject: Is this sundial business 'genuine', or not? Date: Mon, Jul 23, 20

Re: Is this sundial business 'genuine', or not?

Hi Rodger, Thanks for the description on how to graphical design a analemmatic sundial. It maybe me but I am having problems in following your instructions. I find it very hard to follow some parts like. "Now physically drop the disc and pencil onto a horizontal table. Get down to view across

Re: Is this sundial business 'genuine', or not?

Hi Roger and Mitchael, I'm sure others have thought of and have used these concepts before us. Sundials have been around for a long time. What these concepts achieves are: That all clocks have a energy source to make them work. For sundials it is the rotation of Earth. And that planet Earth

Re: Is this sundial business 'genuine', or not?

Hi all, The following is what I think is the best way to describe how sundials work to kids or anyone. 1st start with the largest sundial in the world. Planet Earth the Master sundial clock. Stick a vertical stick into the ground at the South pole or North pole. And describe how the shadow

Re: sundial Digest, Vol 149, Issue 13

Hi, What about a English version? Regards, Roderick Wall. - Reply message - From: "Lupe F." To: "sundial@uni-koeln.de" Subject: sundial Digest, Vol 149, Issue 13 Date: Sun, May 20, 2018 3:16 AM Hi friends, I would like to add that in that

Education sundial in Australia

Hi all, I have just purchased a plastic educational sundial from Kmart in Burwood Victoria Australia. For AU$2.00. Looks like a clearance sale. Other Kmarts in Australia may also have them? It is called "Sundial Build and play" by STEM LEARNING. Barcode: 9 341104 583688. You can set the

Re: From sundial to sundial along a meridian to Cistercian abbeys

Hi Willy, Thanks it was very interesting to read about the trip. About the different Abbeys and sundials. Being there for many hundreds of years. Where here in Australia I remember as a child our town became 100 years old. Thanks, Roderick Wall. - Reply message - From: "Willy

Re: Sundial books for children

I think the best way to teach 10 year olds. Is not by a book but by active doing and seeing. Part of active seeing could be to have a sundial and use a torch as being the sun. Describe the torch as being the sun, and watch the shadows show the time. Describe that in the morning the sun comes up

Re: publication on Science of Time, with sundials

Thanks Sara, A very interesting book. Haven't finished reading it but will. It reminds me of a book that I once read about time. Book indicated that when the telegraph lines were invented. This then allowed time to be accurate at the end of the telegraph line. Which then allowed the location

Re: Golden Ratio and Sundials

Hi Geoff and Frank, My book also shows this. By The Way, the book is one of a series called the Mathematical World by National Geographic. Where in Australia the 1st book. The Golden Ratio. The mathematical language of beauty. Was AUD $2. $2 to get you to purchase the 1st book. And then you

Re: Golden Ratio and Sundials

the time on the numbers on the spiral. Wonder if it was a Golden Ratio spiral. Have fun, Roderick Wall. - Reply message - From: "John Carmichael" <jlcarmich...@comcast.net> To: "'rodwall1...@gmail.com'" <rodwall1...@gmail.com>, <sundial@uni-koeln.de> S

Re: Golden Ratio and Sundials

Hi Brooke, Thanks, I can see that your information is from Da Book. Roderick. - Reply message - From: "Brooke Clarke" To: "'Sundial Mailing List'" Subject: Golden Ratio and Sundials Date: Thu, Jun 22, 2017 7:27 AM Hi Roderick: I also have a

Golden Ratio and Sundials

Hi all, I have been reading a book on the Golden Ratio which is 1.6180339887. It describes how the Golden Ratio describes how the spiral of a sea shell is produced. And how nature uses the Golden Ratio on the size of leaves etc. Does anyone know if sundials have ever been produced useing the

Re: Brass or Bronze for Sundials.

: "tonylindi...@talktalk.net" <tonylindi...@talktalk.net> To: <rodwall1...@gmail.com>, <sundial@uni-koeln.de> Subject: Brass or Bronze for Sundials. Date: Mon, Jun 5, 2017 7:34 PM Hi Rod, The advantages for me is that they look good and take a handsome patination if

Brass or Bronze for Sundials.

Hi all, For a sundial that will be out in the weather. What is the advantage/disadvantage of using brass or bronze? Regards, Roderick Wall. --- https://lists.uni-koeln.de/mailman/listinfo/sundial

Mounting sundials. Method byTony Moss.

Hi Tony, Think you may has missed my request. For photos on how to securely mount a sundial. You did describe how to do this but photos would help. This was with reference to mounting a sundial on the John Smith memorial in Australia. Kind regards, Roderick Wall.

Mounting Sundials...securely

Hi all, In the Ranelagh Estate at Mount Eliza Victoria 3930 Australia. There is a memorial to John Thomas Smith in Ranelagh drive. The memorial was surmounted by a sundial. It was there as late as 2004. It was removed by unknown people several times and was replaced by the shire. But the shire

Re: Inquiry - Part 1

Hi Steve, Any chance of getting a copy of or where to get it. I found a 1737 publication /Regle artificielle du temps /by Henry Sully, an English clockmaker in Paris and clockmaker to the Duc D'Orleans, which has fairly extensive instructions on how to regulate clocks using either a sundial or

Re: Inquiry - Part 2

Hi all, This link indicates when the telegraph was 1st perfected. 1837 Cook and Wheatstone in England. http://www.persee.fr/doc/flux_1154-2721_1993_num_9_11_939 Regards, Roderick Wall. - Reply message - From: "Frank King" To: "Steve Lelievre"

Re: Inquiry - Part 2

Hi Frank and Steve, This link is interesting on early telegraph systems in France. http://www.bbc.com/news/magazine-22909590 Roderick Wall. - Reply message - From: "Frank King" To: "Steve Lelievre" Cc: "sundial@uni-koeln.de"

Re: Inquiry

Hi Steve, Here is a link which has some interesting history information about Equation Clocks. Roderick Wall.

Re: Time question on GPS TIME and leap second.

clock. The firmware is written in the C programming language. And is available if you want to make it work the way you want it to. Have fun, Roderick Wall. - Reply message - From: "Brooke Clarke" <bro...@pacific.net> To: "rodwall1...@gmail.com" <rodwall1

Re: Time question on GPS TIME and leap second.

Hi Brooke, True, GPS doesn't know about daylight saving. To set the clock up after building it. You use a RS232 Com terminal program, to talk to the clock driver microprocessor. And set up the month and which Sunday daylight saving starts and finishes. You need to: Set your time zone. Daylight

Re: Time question on GPS TIME and leap second.

A recent article on the GPS analog clock driver. A better description; http://archive.siliconchip.com.au/cms/A_92/article.html Roderick Wall. - Reply message - From: "Richard Langley" To: "Brooke Clarke" , "sundial list"

Re: Time question on GPS TIME and leap second.

Thanks to all who replied to my questions about the time on GPS. The reason I asked about the leap second. Is if the following analog clock GPS driver included the leap second correction. Yes it would. http://www.altronics.com.au/p/k1129-gps-synchronised-clock-kit/ It also corrects it for

Time question on GPS TIME and leap second.

Hi all, Was just listening to the CrowdScience on time. Thanks to whoever posted the link to it. CrowdScience indicated that a leap second was not added for the GPS. They also indicated that the GPS gives us UTC time. Question: The UTC time that the GPS gives. Does that have the leap second

Re: An interesting piece of timekeeping

Hi Jack, Is this for Android? I couldn't find it. Roderick Wall. - Reply message - From: "Jack Aubert" To: "'David Patte ₯'" , Subject: An interesting piece of timekeeping Date: Wed, Jan 18, 2017 10:17 AM The

Re: Quick Sundial Quiz - What's the matter with this dial? (Tower Bridge Equatorial)

Hi Ian Very interesting story. The equatorial Tower Dial is a great sundial. Regards, Roderick Wall. - Reply message - From: "Ian Maddocks" To: "sundial@uni-koeln.de" Subject: Quick Sundial Quiz - What's the matter with this dial?

Re: Equation of time on a Android Smart Watch

no success, even if my Moto 360 smartwatch is said to be fully compatible. I have then sent an email to the app developers and I am now waiting for some help. I will keep you informed. Ciao. Gian 2016-12-17 1:34 GMT+01:00 rodwall1...@gmail.com <rodwall1...@gmail.com>: > Hi all, > > So

Equation of time on a Android Smart Watch

Hi all, Some time ago there was some discussion on Equation of time watches that cost $60,000 plus. Much too much for my pocket. Someone I can't remembered who. Indicated that it would be possible to have The Equation of time on a Android Smart Watch. But they couldn't find one. I thought that

Re: Two EOT watch movements

Hi Bob, There are some great equation of time watches in your links. I liked the Audemars Piguet Royal Oak Equation of Time watch. I wonder if the screen resolution of the smart watch. Would be high enough to display the fine details that would be required for tha above EOT watch? And how long

Re: Longcase Clock with Equation of TIme

of Willy Leenders <willy.leend...@telenet.be> Sent: 08 October 2016 18:15 To: rodwall1...@gmail.com Cc: Kevin Karney; Sundial list Subject: Re: Longcase Clock with Equation of TIme More interesting is to know whether there exist modern timepieces which indicate the solar time. With the po

Re: Longcase Clock with Equation of TIme

Hi all, This is an interesting website on equation clocks. https://en.m.wikipedia.org/wiki/Equation_clock Regards, Roderick Wall. - Reply message - From: "Kevin Karney" <kar...@me.com> To: "rodwall1...@gmail.com" <rodwall1...@gmail.com> Cc: "Sundial

Re: Longcase Clock with Equation of TIme

of time dials? Thanks all for such a interesting subject. So many of you have so much interesting knowledge thanks. Regards, Roderick Wall. - Reply message - From: "Kevin Karney" <kar...@me.com> To: "rodwall1...@gmail.com" <rodwall1...@gmail.com> Cc: &quo

Re: Longcase Clock with Equation of TIme

Hi all, In 1730. I think I heard somewhere that. Clock manufacturers also sometimes gave a small window sundial to allow you to set your clock. With a equation of time table. Is that correct? Roderick Wall.. - Reply message - From: "Robert Terwilliger" To: "'Ian

Re: Longcase Clock with Equation of TIme

Hi Ian, Thanks for this link. Very interesting I've never see this before. I wonder if there are any other clocks with the equation of time on the dial. And in what form is the equation of time shown on the clock dial. Regards, Roderick Wall. - Reply message - From: "Ian Maddocks"