Re: Analemmatic sundial
Donald, A nice idea. If you want to display the progress of the shadow from morning to evening, the movement must be in clockwise and not the rverse as in the animated image. Willy Leenders Hasselt in Flanders (Belgium) Visit my website about the sundials in the province of Limburg (Flanders) with a section 'worth knowing about sundials' (mostly in Dutch): http://www.wijzerweb.be Op 11-jan-2013, om 03:32 heeft Donald Christensen het volgende geschreven: Hi all I just had a cartoonist work on the logo for my website. The idea is that I wanted to put it in the footer of my emails. I will eventually put it in the header of my website - or more accurately, customize the wordpress theme so that I can put an animated gif next to the header. I'll include a link in case the moving logo does not work on this forum content.screencast.com/users/dchristensen777/folders/Default/media/d641cee8-137c-456d-afc1-334e75526254/logo GIRL_SHADOW.gif Cheers Donald 0423 102 090 www.sundialsforlearning.com --- https://lists.uni-koeln.de/mailman/listinfo/sundial --- https://lists.uni-koeln.de/mailman/listinfo/sundial
Re: Analemmatic sundial
My comment is valid only for the northern hemisphere Willy Leenders Hasselt in Flanders (Belgium) Op 11-jan-2013, om 11:20 heeft Willy Leenders het volgende geschreven: Donald, A nice idea. If you want to display the progress of the shadow from morning to evening, the movement must be in clockwise and not the rverse as in the animated image. Willy Leenders Hasselt in Flanders (Belgium) Visit my website about the sundials in the province of Limburg (Flanders) with a section 'worth knowing about sundials' (mostly in Dutch): http://www.wijzerweb.be Op 11-jan-2013, om 03:32 heeft Donald Christensen het volgende geschreven: Hi all I just had a cartoonist work on the logo for my website. The idea is that I wanted to put it in the footer of my emails. I will eventually put it in the header of my website - or more accurately, customize the wordpress theme so that I can put an animated gif next to the header. I'll include a link in case the moving logo does not work on this forum content.screencast.com/users/dchristensen777/folders/Default/media/d641cee8-137c-456d-afc1-334e75526254/logo GIRL_SHADOW.gif Cheers Donald 0423 102 090 www.sundialsforlearning.com --- https://lists.uni-koeln.de/mailman/listinfo/sundial --- https://lists.uni-koeln.de/mailman/listinfo/sundial --- https://lists.uni-koeln.de/mailman/listinfo/sundial
Re: Analemmatic sundial
Yes, there is a world of difference. I was recently in New Zealand and it took some time to get my head around the difference for sundials. South is their reference pole and the numbers do go the other way around. It is interesting a northern designed vertical south facing sundial is identical to a southern horizontal dial for the co-latitude. I found a number of good sundials in New Zealand but didn't find any that exploited the above advantage. Thanks Rosaleen Robertson of the New Zealand Sundial Association (www.sundials.org.nz) for your assistance. Regards, Roger Bailey @ 48.6° north again From: Willy Leenders Sent: Friday, January 11, 2013 2:38 AM To: Willy Leenders Cc: sundial@uni-koeln.de Subject: Re: Analemmatic sundial My comment is valid only for the northern hemisphere Willy Leenders Hasselt in Flanders (Belgium) Op 11-jan-2013, om 11:20 heeft Willy Leenders het volgende geschreven: Donald, A nice idea. If you want to display the progress of the shadow from morning to evening, the movement must be in clockwise and not the rverse as in the animated image. Willy Leenders Hasselt in Flanders (Belgium) Visit my website about the sundials in the province of Limburg (Flanders) with a section 'worth knowing about sundials' (mostly in Dutch): http://www.wijzerweb.be Op 11-jan-2013, om 03:32 heeft Donald Christensen het volgende geschreven: Hi all I just had a cartoonist work on the logo for my website. The idea is that I wanted to put it in the footer of my emails. I will eventually put it in the header of my website - or more accurately, customize the wordpress theme so that I can put an animated gif next to the header. I'll include a link in case the moving logo does not work on this forum content.screencast.com/users/dchristensen777/folders/Default/media/d641cee8-137c-456d-afc1-334e75526254/logo GIRL_SHADOW.gif Cheers Donald 0423 102 090 www.sundialsforlearning.com --- https://lists.uni-koeln.de/mailman/listinfo/sundial --- https://lists.uni-koeln.de/mailman/listinfo/sundial --- https://lists.uni-koeln.de/mailman/listinfo/sundial No virus found in this message. Checked by AVG - www.avg.com Version: 2013.0.2890 / Virus Database: 2637/6024 - Release Date: 01/10/13 --- https://lists.uni-koeln.de/mailman/listinfo/sundial
Re: Analemmatic sundial
Some years ago, I bought what seemed to be a nicely constructed equatorial sundial at a garden centre in Holland. I don't know about the display unit but the one in the box I bought turned out to be for the southern hemisphere when I got it home. Mounting the circular bow upside down made it usable although it necessitates crooking one's head 180 degrees to read it. ;-) -- Richard Langley On 11-Jan-13, at 1:32 PM, Roger Bailey wrote: Yes, there is a world of difference. I was recently in New Zealand and it took some time to get my head around the difference for sundials. South is their reference pole and the numbers do go the other way around. It is interesting a northern designed vertical south facing sundial is identical to a southern horizontal dial for the co-latitude. I found a number of good sundials in New Zealand but didn't find any that exploited the above advantage. Thanks Rosaleen Robertson of the New Zealand Sundial Association (www.sundials.org.nz ) for your assistance. Regards, Roger Bailey @ 48.6° north again From: Willy Leenders Sent: Friday, January 11, 2013 2:38 AM To: Willy Leenders Cc: sundial@uni-koeln.de Subject: Re: Analemmatic sundial My comment is valid only for the northern hemisphere Willy Leenders Hasselt in Flanders (Belgium) Op 11-jan-2013, om 11:20 heeft Willy Leenders het volgende geschreven: Donald, A nice idea. If you want to display the progress of the shadow from morning to evening, the movement must be in clockwise and not the rverse as in the animated image. Willy Leenders Hasselt in Flanders (Belgium) Visit my website about the sundials in the province of Limburg (Flanders) with a section 'worth knowing about sundials' (mostly in Dutch): http://www.wijzerweb.be Op 11-jan-2013, om 03:32 heeft Donald Christensen het volgende geschreven: Hi all I just had a cartoonist work on the logo for my website. The idea is that I wanted to put it in the footer of my emails. I will eventually put it in the header of my website - or more accurately, customize the wordpress theme so that I can put an animated gif next to the header. I'll include a link in case the moving logo does not work on this forum content.screencast.com/users/dchristensen777/folders/Default/media/ d641cee8-137c-456d-afc1-334e75526254/logo GIRL_SHADOW.gif Cheers Donald 0423 102 090 www.sundialsforlearning.com --- https://lists.uni-koeln.de/mailman/listinfo/sundial --- https://lists.uni-koeln.de/mailman/listinfo/sundial --- https://lists.uni-koeln.de/mailman/listinfo/sundial No virus found in this message. Checked by AVG - www.avg.com Version: 2013.0.2890 / Virus Database: 2637/6024 - Release Date: 01/10/13 --- https://lists.uni-koeln.de/mailman/listinfo/sundial - | Richard B. LangleyE-mail: l...@unb.ca | | Geodetic Research Laboratory Web: http://www.unb.ca/GGE/ | | Dept. of Geodesy and Geomatics EngineeringPhone:+1 506 453-5142 | | University of New Brunswick Fax: +1 506 453-4943 | | Fredericton, N.B., Canada E3B 5A3| |Fredericton? Where's that? See: http:// www.fredericton.ca/ | - --- https://lists.uni-koeln.de/mailman/listinfo/sundial
Re: Analemmatic sundial
Once I moved to Australia from California, It took me about 3 years before I would stop make embarrassing mistakes concerning left from right. At times, I felt I was 6 years old again! I lived in California for 22 years The ocean is west The sun sets on the ocean We drove on the right When we face north, our back is to the equator In Brisbane The ocean is east The sun sets inland We drive on the left When we face north, we are also facing the equator I also had a fun time learning about sundials. 95% (or more) of the books and articles are for northern hemisphere dials. I had to try to convert this data to southern hemisphere before I even knew how a sundial works! I have changed the animation for the shadow to rotate the other direction. However, I'm still undecided of which one to use on my website and email footer http://content.screencast.com/users/dchristensen777/folders/Default/media/424ea0f6-012b-4d4f-ac4e-beb931f04403/GIRL_SHADOW%20northern%20dial.gif Cheers Donald 0423 102 090 www.sundialsforlearning.com On Sat, Jan 12, 2013 at 3:40 AM, Richard B. Langley l...@unb.ca wrote: Some years ago, I bought what seemed to be a nicely constructed equatorial sundial at a garden centre in Holland. I don't know about the display unit but the one in the box I bought turned out to be for the southern hemisphere when I got it home. Mounting the circular bow upside down made it usable although it necessitates crooking one's head 180 degrees to read it. ;-) -- Richard Langley On 11-Jan-13, at 1:32 PM, Roger Bailey wrote: Yes, there is a world of difference. I was recently in New Zealand and it took some time to get my head around the difference for sundials. South is their reference pole and the numbers do go the other way around. It is interesting a northern designed vertical south facing sundial is identical to a southern horizontal dial for the co-latitude. I found a number of good sundials in New Zealand but didn't find any that exploited the above advantage. Thanks Rosaleen Robertson of the New Zealand Sundial Association ( www.sundials.org.nz) for your assistance. Regards, Roger Bailey @ 48.6° north again From: Willy Leenders Sent: Friday, January 11, 2013 2:38 AM To: Willy Leenders Cc: sundial@uni-koeln.de Subject: Re: Analemmatic sundial My comment is valid only for the northern hemisphere Willy Leenders Hasselt in Flanders (Belgium) Op 11-jan-2013, om 11:20 heeft Willy Leenders het volgende geschreven: Donald, A nice idea. If you want to display the progress of the shadow from morning to evening, the movement must be in clockwise and not the rverse as in the animated image. Willy Leenders Hasselt in Flanders (Belgium) Visit my website about the sundials in the province of Limburg (Flanders) with a section 'worth knowing about sundials' (mostly in Dutch): http://www.wijzerweb.be Op 11-jan-2013, om 03:32 heeft Donald Christensen het volgende geschreven: Hi all I just had a cartoonist work on the logo for my website. The idea is that I wanted to put it in the footer of my emails. I will eventually put it in the header of my website - or more accurately, customize the wordpress theme so that I can put an animated gif next to the header. I'll include a link in case the moving logo does not work on this forum content.screencast.com/users/**dchristensen777/folders/** Default/media/d641cee8-137c-**456d-afc1-334e75526254/logohttp://content.screencast.com/users/dchristensen777/folders/Default/media/d641cee8-137c-456d-afc1-334e75526254/logoGIRL_SHADOW.gif Cheers Donald 0423 102 090 www.sundialsforlearning.com --**- https://lists.uni-koeln.de/**mailman/listinfo/sundialhttps://lists.uni-koeln.de/mailman/listinfo/sundial --**- https://lists.uni-koeln.de/**mailman/listinfo/sundialhttps://lists.uni-koeln.de/mailman/listinfo/sundial --**- https://lists.uni-koeln.de/**mailman/listinfo/sundialhttps://lists.uni-koeln.de/mailman/listinfo/sundial No virus found in this message. Checked by AVG - www.avg.com Version: 2013.0.2890 / Virus Database: 2637/6024 - Release Date: 01/10/13 --**- https://lists.uni-koeln.de/**mailman/listinfo/sundialhttps://lists.uni-koeln.de/mailman/listinfo/sundial --**--** - | Richard B. LangleyE-mail: l...@unb.ca | | Geodetic Research Laboratory Web: http://www.unb.ca/GGE/ | | Dept. of Geodesy and Geomatics EngineeringPhone:+1 506 453-5142 | | University of New Brunswick Fax: +1 506 453-4943 | | Fredericton, N.B., Canada E3B 5A3 | |Fredericton? Where's that? See: http://www.fredericton.ca/ |
Re: Analemmatic sundial
Hi Donald, In Melbourne Australia we also drive on the left. But the sun still/always comes up in the East and sets in the West. The top edge of the style is still parallel with the axis of Earth. But as your animations show, the shadow in the Southern Hemisphere moves in a anticlockwise direction. And in a clockwise direction for the Northern Hemisphere. I did read somewhere where they say that the mechanical clock was invented in the Northern Hemisphere. Because the clock hands also move in a clockwise direction like the direction of the sun’s shadow in the Northern Hemisphere. Also interesting is that car speedos and other indicators also increase in a clockwise direction. Maybe someone else knows more about this? Like you I also find that a lot of sundial articles are written for the Northern Hemisphere. But I’m now use to having to convert them for the Southern Hemisphere, It’s even fun. With regard to your question on which animation you should use. Maybe you are able to determine if the visitors to your website are from the Northern or Southern Hemisphere, then display the correct Girl animation for them. Or you could have a question link asking which hemisphere they are from and display the correct animation. You may also like to turn one of the animations around (refer to below). On your website (and girl animations). I note that there are two sundials, one for Perth Australia and another for Whitehorse Canada. Would it be better to turn one around so that the points of the compass are in the same direction for both sundials, and to locate them so that the Canadian sundial is in the Northern Hemisphere and the Australian sundial is in the Southern Hemisphere? I suppose Australia is down under and would be at the bottom. You may also like to indicate where N, S, E and W are. Would this give a better understanding? You may also like to combine both girl animations to be in the same animation. I hope you are not near the bushfires there in Queensland. It’s been hot here in Melbourne, but this year not near the bushfires. I note that NSW have had 130 different fires burning at the same time. Regards, Roderick Wall. From: Donald Christensen Sent: Saturday, January 12, 2013 10:34 AM To: Richard B. Langley Cc: Sundial Mailing Mailing List Subject: Re: Analemmatic sundial Once I moved to Australia from California, It took me about 3 years before I would stop make embarrassing mistakes concerning left from right. At times, I felt I was 6 years old again! I lived in California for 22 years The ocean is west The sun sets on the ocean We drove on the right When we face north, our back is to the equator In Brisbane The ocean is east The sun sets inland We drive on the left When we face north, we are also facing the equator I also had a fun time learning about sundials. 95% (or more) of the books and articles are for northern hemisphere dials. I had to try to convert this data to southern hemisphere before I even knew how a sundial works! I have changed the animation for the shadow to rotate the other direction. However, I'm still undecided of which one to use on my website and email footer http://content.screencast.com/users/dchristensen777/folders/Default/media/424ea0f6-012b-4d4f-ac4e-beb931f04403/GIRL_SHADOW%20northern%20dial.gif Cheers Donald 0423 102 090 www.sundialsforlearning.com On Sat, Jan 12, 2013 at 3:40 AM, Richard B. Langley l...@unb.ca wrote: Some years ago, I bought what seemed to be a nicely constructed equatorial sundial at a garden centre in Holland. I don't know about the display unit but the one in the box I bought turned out to be for the southern hemisphere when I got it home. Mounting the circular bow upside down made it usable although it necessitates crooking one's head 180 degrees to read it. ;-) -- Richard Langley On 11-Jan-13, at 1:32 PM, Roger Bailey wrote: Yes, there is a world of difference. I was recently in New Zealand and it took some time to get my head around the difference for sundials. South is their reference pole and the numbers do go the other way around. It is interesting a northern designed vertical south facing sundial is identical to a southern horizontal dial for the co-latitude. I found a number of good sundials in New Zealand but didn't find any that exploited the above advantage. Thanks Rosaleen Robertson of the New Zealand Sundial Association (www.sundials.org.nz) for your assistance. Regards, Roger Bailey @ 48.6° north again From: Willy Leenders Sent: Friday, January 11, 2013 2:38 AM To: Willy Leenders Cc: sundial@uni-koeln.de Subject: Re: Analemmatic sundial My comment is valid only for the northern hemisphere Willy Leenders Hasselt in Flanders (Belgium) Op 11-jan-2013, om 11:20 heeft Willy Leenders het volgende geschreven:
RE: sundial Digest, Vol 85, Issue 11
Donald, Why limit your website to show only a sundial in one hemisphere or the other? Why not let the person who enters the website determine where he is from and what a sundial in their hemisphere works like? Or see what it might look in another hemisphere? You have an opportunity to teach by leaving both of the variants of animated sundials on the website and letting the user choose which he would like to see. Art Krenzel Message: 1 Date: Sat, 12 Jan 2013 09:34:07 +1000 From: Donald Christensen dchristensen...@gmail.com To: Richard B. Langley l...@unb.ca Cc: Sundial Mailing Mailing List sundial@uni-koeln.de Subject: Re: Analemmatic sundial Message-ID: cac+ykpuu6duktdb5ogcgrqjs+8+vbxy3ahycroxggde2g7o...@mail.gmail.com Content-Type: text/plain; charset=iso-8859-1 Once I moved to Australia from California, It took me about 3 years before I would stop make embarrassing mistakes concerning left from right. At times, I felt I was 6 years old again! I lived in California for 22 years The ocean is west The sun sets on the ocean We drove on the right When we face north, our back is to the equator In Brisbane The ocean is east The sun sets inland We drive on the left When we face north, we are also facing the equator I also had a fun time learning about sundials. 95% (or more) of the books and articles are for northern hemisphere dials. I had to try to convert this data to southern hemisphere before I even knew how a sundial works! I have changed the animation for the shadow to rotate the other direction. However, I'm still undecided of which one to use on my website and email footer http://content.screencast.com/users/dchristensen777/folders/Default/media/424ea0f6-012b-4d4f-ac4e-beb931f04403/GIRL_SHADOW%20northern%20dial.gif Cheers Donald 0423 102 090 www.sundialsforlearning.com --- https://lists.uni-koeln.de/mailman/listinfo/sundial
Re: Analemmatic sundial
Brilliant idea Roderick! I put both animations on my website. Each one has a label under it stating which hemisphere it's for Cheers Donald 0423 102 090 www.sundialsforlearning.com On Sat, Jan 12, 2013 at 12:24 PM, R Wall ml maillis...@optusnet.com.auwrote: Hi Donald, In Melbourne Australia we also drive on the left. But the sun still/always comes up in the East and sets in the West. The top edge of the style is still parallel with the axis of Earth. But as your animations show, the shadow in the Southern Hemisphere moves in a anticlockwise direction. And in a clockwise direction for the Northern Hemisphere. I did read somewhere where they say that the mechanical clock was invented in the Northern Hemisphere. Because the clock hands also move in a clockwise direction like the direction of the sun’s shadow in the Northern Hemisphere. Also interesting is that car speedos and other indicators also increase in a clockwise direction. Maybe someone else knows more about this? Like you I also find that a lot of sundial articles are written for the Northern Hemisphere. But I’m now use to having to convert them for the Southern Hemisphere, It’s even fun. With regard to your question on which animation you should use. Maybe you are able to determine if the visitors to your website are from the Northern or Southern Hemisphere, then display the correct Girl animation for them. Or you could have a question link asking which hemisphere they are from and display the correct animation. You may also like to turn one of the animations around (refer to below). On your website (and girl animations). I note that there are two sundials, one for Perth Australia and another for Whitehorse Canada. Would it be better to turn one around so that the points of the compass are in the same direction for both sundials, and to locate them so that the Canadian sundial is in the Northern Hemisphere and the Australian sundial is in the Southern Hemisphere? I suppose Australia is down under and would be at the bottom. You may also like to indicate where N, S, E and W are. Would this give a better understanding? You may also like to combine both girl animations to be in the same animation. I hope you are not near the bushfires there in Queensland. It’s been hot here in Melbourne, but this year not near the bushfires. I note that NSW have had 130 different fires burning at the same time. Regards, Roderick Wall. *From:* Donald Christensen dchristensen...@gmail.com *Sent:* Saturday, January 12, 2013 10:34 AM *To:* Richard B. Langley l...@unb.ca *Cc:* Sundial Mailing Mailing List sundial@uni-koeln.de *Subject:* Re: Analemmatic sundial Once I moved to Australia from California, It took me about 3 years before I would stop make embarrassing mistakes concerning left from right. At times, I felt I was 6 years old again! I lived in California for 22 years The ocean is west The sun sets on the ocean We drove on the right When we face north, our back is to the equator In Brisbane The ocean is east The sun sets inland We drive on the left When we face north, we are also facing the equator I also had a fun time learning about sundials. 95% (or more) of the books and articles are for northern hemisphere dials. I had to try to convert this data to southern hemisphere before I even knew how a sundial works! I have changed the animation for the shadow to rotate the other direction. However, I'm still undecided of which one to use on my website and email footer http://content.screencast.com/users/dchristensen777/folders/Default/media/424ea0f6-012b-4d4f-ac4e-beb931f04403/GIRL_SHADOW%20northern%20dial.gif Cheers Donald 0423 102 090 www.sundialsforlearning.com On Sat, Jan 12, 2013 at 3:40 AM, Richard B. Langley l...@unb.ca wrote: Some years ago, I bought what seemed to be a nicely constructed equatorial sundial at a garden centre in Holland. I don't know about the display unit but the one in the box I bought turned out to be for the southern hemisphere when I got it home. Mounting the circular bow upside down made it usable although it necessitates crooking one's head 180 degrees to read it. ;-) -- Richard Langley On 11-Jan-13, at 1:32 PM, Roger Bailey wrote: Yes, there is a world of difference. I was recently in New Zealand and it took some time to get my head around the difference for sundials. South is their reference pole and the numbers do go the other way around. It is interesting a northern designed vertical south facing sundial is identical to a southern horizontal dial for the co-latitude. I found a number of good sundials in New Zealand but didn't find any that exploited the above advantage. Thanks Rosaleen Robertson of the New Zealand Sundial Association ( www.sundials.org.nz) for your assistance. Regards, Roger Bailey @ 48.6° north again From: Willy Leenders Sent: Friday, January 11, 2013 2:38 AM To: Willy
