Poncet Platform: was Re: Equation of Time
Hi, I've tried to send a couple of small jpgs of my crude Poncet Platform, but they've been blocked by the server, too large. I may have to try in stages. best wishes, Peter -- Peter Mayer Politics Department The University of Adelaide, AUSTRALIA 5005 Ph: +61 8 8303 5606 Fax : +61 8 8303 3443 e-mail: [EMAIL PROTECTED] CRICOS Provider Number 00123M --- This email message is intended only for the addressee(s) and contains information that may be confidential and/or copyright. If you are not the intended recipient please notify the sender by reply email and immediately delete this email. Use, disclosure or reproduction of this email by anyone other than the intended recipient(s) is strictly prohibited. No representation is made that this email or any attachments are free of viruses. Virus scanning is recommended and is the responsibility of the recipient. inline: tn_DSCF0074.JPGinline: tn_DSCF0083.JPG--- https://lists.uni-koeln.de/mailman/listinfo/sundial
RE: sundial in the Company's Garden in Cape Town
Hello, Willy As Roderick Wall suggested, it COULD simply be that this is just intended to 'hide' any mistakes by the original maker. However, another possibility is that those numerals for the hours 5, 6, 7 and 8 were deliberately made that way - so as to make it obvious that these are the morning (a.m.) hours. Perhaps each overlaid 'upside-down V' is to be viewed as an upward-arrow - and maybe representing the sunRISE hours ? Keith Christian. -- --- https://lists.uni-koeln.de/mailman/listinfo/sundial
Re: Poncet Platform
Hi Peter, One more image, of the pivot alone?? Can't quite make it out in that second view.? The rest is quite clear. Question: Is it still a Poncet platform if it utilizes a cylindrical surface rather than a planar surface? Best, John B Peter Mayer wrote: ? Hi,? ? ? I've tried to send a couple of small jpgs of my crude Poncet Platform, but they've been blocked by the server, too large. I may have to try in stages.? ? best wishes,? ? Peter? ? AOL now offers free email to everyone. Find out more about what's free from AOL at AOL.com. --- https://lists.uni-koeln.de/mailman/listinfo/sundial
Re: Poncet Platform: was Re: Equation of Time
Hi Peter, Your small jpgs came through fine. There seem to be a number of Poncet patents with curved surfaces, to answer other questions. This embodyment seems sturdier and less likely to shift. It appears to be an indoor dial, through a south window, yes. It looks really good! I wish I had a south window. Nice to hear from you again. Edley. Hi, I've tried to send a couple of small jpgs of my crude Poncet Platform, but they've been blocked by the server, too large. I may have to try in stages. best wishes, Peter -- Peter Mayer Politics Department The University of Adelaide, AUSTRALIA 5005 Ph: +61 8 8303 5606 Fax : +61 8 8303 3443 e-mail: [EMAIL PROTECTED] CRICOS Provider Number 00123M --- This email message is intended only for the addressee(s) and contains information that may be confidential and/or copyright. If you are not the intended recipient please notify the sender by reply email and immediately delete this email. Use, disclosure or reproduction of this email by anyone other than the intended recipient(s) is strictly prohibited. No representation is made that this email or any attachments are free of viruses. Virus scanning is recommended and is the responsibility of the recipient. --- https://lists.uni-koeln.de/mailman/listinfo/sundial
Re: Poncet Platform
Dear John, I may have to take another photo. In my platform, the gnomon rod extends through the base and is the pivot as well. In principle a circular section of a cone should work. I'll also post a schematic drawing of my platform. best wishes, Peter [EMAIL PROTECTED] wrote: Hi Peter, One more image, of the pivot alone? Can't quite make it out in that second view. The rest is quite clear. Question: Is it still a Poncet platform if it utilizes a cylindrical surface rather than a planar surface? Best, John B Peter Mayer wrote: Hi, I've tried to send a couple of small jpgs of my crude Poncet Platform, but they've been blocked by the server, too large. I may have to try in stages. best wishes, Peter AOL now offers free email to everyone. Find out more about what's free from AOL at AOL.com http://www.aol.com?ncid=AOLAOF0002000437. -- Peter Mayer Politics Department The University of Adelaide, AUSTRALIA 5005 Ph: +61 8 8303 5606 Fax : +61 8 8303 3443 e-mail: [EMAIL PROTECTED] CRICOS Provider Number 00123M --- This email message is intended only for the addressee(s) and contains information that may be confidential and/or copyright. If you are not the intended recipient please notify the sender by reply email and immediately delete this email. Use, disclosure or reproduction of this email by anyone other than the intended recipient(s) is strictly prohibited. No representation is made that this email or any attachments are free of viruses. Virus scanning is recommended and is the responsibility of the recipient. --- https://lists.uni-koeln.de/mailman/listinfo/sundial
Re: Poncet Platform: was Re: Equation of Time
Dear Edley, My version is a Gee platform, named for Alan Gee which uses a circular section. I rested the section in the piece of plywood I'd cut it from, resting it, as perhaps you can see, on two little teflon furniture glides. Oh! And since I'm in Oz, the door (and deck) face north. (Perhaps if you can see the numbers on the dial you'll see they run from right to left!). best wishes, Peter Edley McKnight wrote: Hi Peter, Your small jpgs came through fine. There seem to be a number of Poncet patents with curved surfaces, to answer other questions. This embodyment seems sturdier and less likely to shift. It appears to be an indoor dial, through a south window, yes. It looks really good! I wish I had a south window. Nice to hear from you again. Edley. Hi, I've tried to send a couple of small jpgs of my crude Poncet Platform, but they've been blocked by the server, too large. I may have to try in stages. best wishes, Peter -- Peter Mayer Politics Department The University of Adelaide, AUSTRALIA 5005 Ph: +61 8 8303 5606 Fax : +61 8 8303 3443 e-mail: [EMAIL PROTECTED] CRICOS Provider Number 00123M --- This email message is intended only for the addressee(s) and contains information that may be confidential and/or copyright. If you are not the intended recipient please notify the sender by reply email and immediately delete this email. Use, disclosure or reproduction of this email by anyone other than the intended recipient(s) is strictly prohibited. No representation is made that this email or any attachments are free of viruses. Virus scanning is recommended and is the responsibility of the recipient. -- Peter Mayer Politics Department The University of Adelaide, AUSTRALIA 5005 Ph: +61 8 8303 5606 Fax : +61 8 8303 3443 e-mail: [EMAIL PROTECTED] CRICOS Provider Number 00123M --- This email message is intended only for the addressee(s) and contains information that may be confidential and/or copyright. If you are not the intended recipient please notify the sender by reply email and immediately delete this email. Use, disclosure or reproduction of this email by anyone other than the intended recipient(s) is strictly prohibited. No representation is made that this email or any attachments are free of viruses. Virus scanning is recommended and is the responsibility of the recipient. --- https://lists.uni-koeln.de/mailman/listinfo/sundial
Re: Poncet Platform
Hi, Here's the schematic view of my Poncet platform. best wishes, Peter -- Peter Mayer Politics Department The University of Adelaide, AUSTRALIA 5005 Ph: +61 8 8303 5606 Fax : +61 8 8303 3443 e-mail: [EMAIL PROTECTED] CRICOS Provider Number 00123M --- This email message is intended only for the addressee(s) and contains information that may be confidential and/or copyright. If you are not the intended recipient please notify the sender by reply email and immediately delete this email. Use, disclosure or reproduction of this email by anyone other than the intended recipient(s) is strictly prohibited. No representation is made that this email or any attachments are free of viruses. Virus scanning is recommended and is the responsibility of the recipient. Poncet_Platform-small.pdf Description: Adobe PDF document --- https://lists.uni-koeln.de/mailman/listinfo/sundial
Re: Poncet Platform
Hi Peter, Thanks for the pictures. This last one pdf sketch demonstrates the rotation on the polar axis quite well. Besides the important new (ok renovated) ideas , this thread has demonstrated a couple of points to me. 1. A good question:. A newbie asking a simple good question has provided a wealth of interesting responses. Yes, this more that he probably wanted to know but we all benefited by the exchange. 2. Size Discipline: Many of us have been frustrated in sharing our ideas because of the size filter on this mailing list. your last, but important, drawing was just a trivial 1.48 kb. His excellent pictures were about 15 kb. The technology is available to produce small files. I am pleased that you met the challenge and communicated these concepts effectively. I may grumble in the future but thanks Peter, you have demonstrated that it can be done. Regards, Roger Bailey Walking Shadow Designs www.walkingshadow.info N48.6 W123.4 - Original Message - From: Peter Mayer [EMAIL PROTECTED] To: sundial@uni-koeln.de Sent: Sunday, June 10, 2007 6:10 PM Subject: Re: Poncet Platform Hi,Here's the schematic view of my Poncet platform. best wishes, Peter --- https://lists.uni-koeln.de/mailman/listinfo/sundial
Southern/Northern exposure
Dear Dialers, I keep making the assumption that a nice room that gets a lot of sun mid day has a Southern Exposure. Is there a short generic term for a surface that faces the sun at noon for most of the year? I guess it only happens above or below 23.5 degrees away from the equator. Nowthern, Sourthern Exposure??? Hmm? at the equator with windows on the north and south, would one have an Ozzy sundial and the other have a Euro sundial part of the year? That is, numbers running the opposite direction. Since this is a world wide forum there should be a generic term that is acceptable. Thanks! Edley McKnight --- https://lists.uni-koeln.de/mailman/listinfo/sundial
