Re: Question About Measuring Wall Declination

Hi Jeffery you are actually calculating the horizontal angle indicated as 'angolo' on the diagram below ie. deviation of the Sun from the wall under consideration. Hope this helps, Alexei [image: image.png] On Mon, 26 Jun 2023 at 16:37, Jeffery Brewer wrote: > I'm attempting to measure the

Re: DeltaCad has been discontinued

Good morning Dan-George, as an alternative one may wish to try https://www.qcad.org/en perhaps. Alexei On Fri, 5 May 2023 at 07:34, Dan-George Uza wrote: > Hello, > > I've just found out that DeltaCad has been discontinued so you won't be > able to download the demo any longer. I find this

Paris sundial

Interesting one in Rue Montmartre https://www.instagram.com/reel/Cj0hS2JIPQV/?igshid=YmMyMTA2M2Y= On Wed, Oct 26, 2022, 11:58 Werner Riegler wrote: > Dear John, > > I know this object as “Horizontoscope". > http://www.horizontoscop.com/eng/index_eng.html > > I bought one recently after reading

Re: What accuracy to aim for with a carefully made sundial?

Another source of error apart from those mentioned in the original post is how accurate can a wall's declination be measured, say to half a degree. And what error would half a degree make depends on the size of your sundial. We are also assuming the wall is planar and built perfectly plumb!

Re: A few photo galleries

Very nice images, thanks! Alexei On Wed, 8 Aug 2018 at 12:05, Darek Oczki wrote: > Hello everyone > > After a weekend in Bratislava and Vienna I would like to share some photos > of sundials I have seen. > > Bratisvala: https://photos.app.goo.gl/gs2x4DmFTWyKvgMy5 > Vienna:

Re: Romanian reclining sundial

I agree that showing local time on a sundial is something to be encouraged. The drawback is that it has to be explained every time to everyone - otherwise the impression being given is that "it does not work" ! Alex On 2 October 2015 at 12:12, Willy Leenders wrote: >

Re: Fer de Vries passed away

I join in all these eulogies, there is definitely the same common sentiment. I think it would be very fitting if an existing large Dutch public sundial, or a new one, be named after him. Regards, Alexei On 13 April 2015 at 10:55, tonylindi...@talktalk.net tonylindi...@talktalk.net wrote: Dear

Re: A big new analemmatic sundial on Malta

Hello Jim, Thank you for your email, It was great working on this project (I made the calculations and concept design), which will hopefully help many students appreciate the beauty of science and art. Best regards, Alexei Malta On 12 June 2013 14:23, J. Tallman jtall...@artisanindustrials.com

Re: Today's Google Banner

The Konigsberg bridges dilemma is particularly intriguing when explained to the non-mathematicians, I suggest you have a look at this for a thorough explanation http://www.ugr.es/~fmartin/gi/bridges.pdf Alex On 15 April 2013 10:21, Frank King frank.k...@cl.cam.ac.uk wrote: Has anyone else on

New analemmatic

Dear all, An analemmatic sundial (humbly designed by the undersigned) has now been completed in the village of l-Għarb in Gozo (Malta). We just need to indicate the monthly durations of June and December. Some images here: https://plus.google.com/u/0/114664468598779337464/posts/5hDzAE4eLUV

Re: New analemmatic

at 4:26 AM, Perit Alexei Pace a...@onvol.net wrote: Dear all, An analemmatic sundial (humbly designed by the undersigned) has now been completed in the village of l-Għarb in Gozo (Malta). We just need to indicate the monthly durations of June and December. Some images here: https

Re: Analemmatic

formats since they are large dials, and cartesian or polar coordinates tend to me more helpful. good luck Simon Simon Wheaton-Smith www.illustratingshadows.com Phoenix, Arizona, W112.1 N33.5 *From:* Perit Alexei Pace a...@onvol.net *To:* Sundial List sund...@rrz.uni-koeln.de *Sent

Graphic 3d animation

Hello all, Have a look at this interactive website http://www.sunmoonscope.com/ Quite a useful teaching tool. There are other 'scopes' as well (solar system, astrology), at the top right hand corner of the screen. best regards, Alex ---

Re: An alternative mapping site

I have to say this review was just a waste of bandwidth. It was just another resource - if it does not apply to you then simply ignore it. No need for any adjectives. Alex For my postcode LU6 2EA it only offers Bing Maps or Yahoo Maps, and the latter is blank., Very poor. No others. Not

light poem

An interesting project http://www.onedaypoem.com/odpp/index.html --- https://lists.uni-koeln.de/mailman/listinfo/sundial

Re: light poem

seeing any hint about the installation's location. Best regards, Mac Alexei Pace wrote: An interesting project http://www.onedaypoem.com/**odpp/index.htmlhttp://www.onedaypoem.com/odpp/index.html http://www.**onedaypoem.com/odpp/index.htmlhttp://www.onedaypoem.com/odpp/index.html

Re: off topic questions

I believe that is illegal as the Moon has been declared as the heritage of mankind. (ie. notwithstanding the 1969 'flag' planting which was just symbolic). So what the 'lunar registry' site shows is just money down the drain (or rather, down someone's pants at the other end!). On Mon, Jul 4,

Re: Multignomon Sundial

Good morning, the only time I need to drill holes at an angle was through wood. That can be done with a common drill press (ie still having the drill point vertically downwards), however you angle upwards the material to drill into at the appropriate angle. Also it has to be secured properly

Re: Google's Art Project and dialling

If I may ask - why is the dial face (the one facing the viewer) on the polyhedral dial different from the rest with the gnomon set on the 6 hour line? Yet the time is just 1 hour behind the two times shown on the other two dials. Regards Alex On Fri, Feb 4, 2011 at 8:59 AM,

Re: Sundials and Google Maps

The world map can be made also such that it is noon on the countries over which the shadow passes. Alexei On Wed, Aug 11, 2010 at 12:16 AM, Phil Walker phil.wal...@sunandshadows.net wrote: Hi Brad, Here is a photo of one of my dials I bought from Helios, Wiesbaden, Germany, an (almost)

Re: Wall declination using google earth

This topic brings up another question - what is the allowance in wall declination measurement which would go unnoticed? In my opinion an error of ±1 degree will not affect any but the largest sundials (and that is mostly only in the early morning and late afternoon hours).

Re: Wall declination using google earth

Hello Damià You have to see how accurate is the satellite photo in google earth oriented with respect to the true north direction. Alex On Mon, Jun 8, 2009 at 2:53 PM, Damia Soler Estrela l...@damia.net wrote: Hello: You are talking about physical declinometers in order to know

analemma

Hello all, I know this topic might have been already discussed, but what is your preferred method of transferring analemma-hour lines onto a wall, each analemma being, say around 7 feet long ? regards Al ---

Re: Duixons sundial

Do not forget the very interesting sundial by Piet Hein as well which is based on the helix. On Thu, May 14, 2009 at 8:26 PM, Frans W. Maes f.w.m...@rug.nl wrote: Hi Chiu, John all, The sundial by Duixans (1984) reminds me of the well-known photo of a gentleman checking his watch against a

RE: Your beautiful painted dial

Hi John et al. Re. paints I always like to use what are called ‘Plastic Emulsion Paint’, commonly used to paint wall in interiors and exteriors.  After drying the paint becomes rubbery and can be stretched. Re. declination I like to use Waugh’s method, such that I can put the

RE: Moon rise/set on the equinox

http://www.astropro.com/features/tables/cen21ce/mo-dcl-2006.html here is a table for 2006. Believe it or not I could only find this in an astrology website! A. --- https://lists.uni-koeln.de/mailman/listinfo/sundial

RE: Is it possible to determine when the sun is due East West?

Nowadays they can find carpets on which to pray which include a small magnetic compass in them so they can orientate towards Mecca On another topic, does anyone have a photo gallery of any new sundials , preferably something ’Äúinnovative’Äù not just a gnomon in the wall type of

RE: Sundials seen from space!

Hello Francois, Maybe you might wish to place the google earth bookmark on your site as well (*.kmz) file, which when clicked on will take you directly to the site if you have GE installed. On another topic, can anyone suggest any nice sundials in the Bavarian region? Will be there

Re: Latin scholars

Incidentally I was always under the impression that Pereunt et Imputantur meant They (the hours) pass by and are reckoned. In my opinion they both mean the same. One must see what the prefix Proet- meant in grammatical terms. Regards Alexei Malta At 20:43 11/05/2005, Douglas Bateman wrote:

RE: Digital cameras

you and best regards Alexei _ Perit Alexei Pace -Original Message- From: Alexei Pace - M.Architecture Ltd. [mailto:[EMAIL PROTECTED] ltd.com] Sent: L-Erbgĸa, 22 ta' Settembru 2004 14:41 To: 'Mac Oglesby' Subject: RE: Digital cameras Ah it is very tempting

RE: Digital cameras

x-charset ks_c_5601-1987Hi Mac thanks for your email The message was 795kb however I could find no attachments Can you resend please with a cc. to [EMAIL PROTECTED] thanks _ Perit Alexei Pace -Original Message- From: Mac Oglesby [mailto:[EMAIL PROTECTED] Sent: L

Re: Wall Declination Measurement

Dear Mr King, Interesting post. As architect my comment on no.1. is that the north arrow which we place in drawings (at least the ones I place) are based on the North direction on large scale survey maps supplied by planning authorities and on which the drawing would be based. Errors of 15

Re: Updated Revised Website

Actually i dont see any need to stay having W3c validation.. check out popular websites, try yahoo.com or even microsoft.com.. it will find loads of errors in them. And yet, they are displayed perfectly on my pc. Well done Tony Alexei Malta At 18:25 21/09/2004, Dave Bell wrote: On Tue, 21 Sep

RE: PowerPoint Setup

Hi John Sorry to have misled you hOpe you manage to find a better solution! Regards Alexei - Original Message - From: John Carmichael [EMAIL PROTECTED] To: Alexei Pace [EMAIL PROTECTED] Cc: Sundial List sundial@rrz.uni-koeln.de Sent: Sunday, March 28, 2004 8:57 PM Subject: Re

Re: Grinder and Iron

UK use 230V, 50Hz supply, so those are the specs to look for! Regards Alexei At 15:17 15/02/2004, you wrote: Hello electrical experts: I have an electrical question. My display table at Oxford will be a stained glass sundial assembly table and I want to be able to use my soldering iron and

RE: Calculating dimensions from perspective pictures; reverse engineering

Title: Message Chris, Would be glad to receive the explanatory diagram Regards Alexei Pace Malta -Original Message-From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Chris Lusby TaylorSent: 11 February 2004 16:34To: sundial@rrz.uni-koeln.deSubject

off topic.

Allow me an off-topic question please - is there any way to obtain the messages within this group as a daily 'digest' format as with other mailing lists? Thank you Alex -

RE: Dial design

This appeared back in mid-90's in the British Sundial Society journal - probably it's the same article which F.Maes referred to by J.Moir. Regards Alexei Pace 35.8N 14.5E -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Andrew James Sent: 01 December

Re: New Sundial books?

I have an autographed copy of the 1994 edition.. Ap At 23:21 14/10/03, you wrote: A very useful book is PRACTICAL ASTRONOMY: A User-friendly Handbook for Skywatchers, by H. Robert Mills and published by Albion Publishing of Chichester, Sussex, England. ISBN 1-898563-02-0 (hardback) or

glass sundial

, and shine and 'glassy' from the other side. Regards Alexei Pace Malta 35degs50N 14degs33E -

Re: Hemicyclium

It's http://www.sundialsoc.org.uk/ actually. Thanks - I now understand ;) Descriptions of both can be found in the BSS Glossary, under Dial (types of) at www.britishsundialsociety.org.uk.

Re: new dial link, a big work !

AP www.dasyposius.com -

RE: new dial link, a big work !

Thanks- very nice website! took a lot of time to shoot all the photos ;0) on another topic, what is the difference between a hemispherium and a hemicyclium? AP At 13:45 08/08/02, you wrote: It should I think be www.dasypodius.com AJ -Original Message- From: Alexei Pace [mailto:[EMAIL

Re: Time Lapse Sundial Movie

I don't see a problem with that, as long as it is inbetween exposures! I have never tried it out for so long a time period though. Maybe a car battery adaptor can be used BTW - there's no need for the camcorder to be digital, just check that it has a programmable time-lapse setting. One last

Re: Time Lapse Sundial Movie

It will work as long as it has a power supply! You can set the times below for recording and for the interval between recordings. Recording time can be 0.5seconds, 1sec, 1.5sec or 2sec. Interval time 30sec, 1min, 5min or 10min. For our purposes I think 0.5sec every 5minutes would be good for a 87

Re: Time Lapse Sundial Movie

sunlight Regards Alexei Pace Malta 35.84ºN 14.55ºE inute for a longer movie. I am NOT a movie photographer and I don't know anything about video cameras. Do you think there is a video camera that can be programmed to take a time lapse movie so that a person doesn't have to personally baby sit

Re: converting DeltaCad files

Hello all I use AutoCAD and if I'm not wrong it can output files in both of these formats. Will let you know when i'm home in some hours. Thanks alexei pace At 19:07 04/04/2000, Gordon Uber wrote: John, I would suggest saving the DeltaCad file in a standard CAD format (such as DXF

Re: CAD printing service

Hello all I can print your cad files if you want through AutoCAD up to any size, including A0. Regards Alexei Pace At 11:15 03/16/2000 , T. M. Taudin-Chabot wrote: Check with a local architect. He has more or less the same problem and I am sure he can plot his files. Perhaps there is one just

Re: Declination Sun and timeequation

Many thanks Thibaud - that should prove to be a great help to all! alexei At 10:07 02/26/2000 , T. M. Taudin-Chabot wrote: For sundial design purposes I had a table made by the mainframe computer of my employer. This table gives for every day in the year the mean values of the declination

zonwvlak

designs babylonic and italian hour lines as well// Thanks for your help happy Y2k everyone Alexei Pace Behind every man alive stand 16.7 ghosts, for that is the ratio by which the dead outnumber the living. Since the dawn of time, a hundred billion human beings have walked the planet Earth

Re: zonwvlak

I particularly like the first suggestion...which never occurred to me ;p I use AutoCAD for the final touchings to the sundial and I find it extremely useful to be able to import the DXF sundial into a CAD program. I may then trim extend colour add text and zodiacal symbols (from fonts) into

Re: Helix Helios (Twisted band sundial)

It was thought of by the inventive Piet Hein who invented the super ellipse amongst other things I shall endeavour to send more information about this dial in the mailing list in the coming days. regards Alexei Pace At 10:35 PM 11/30/99 +, you wrote: Dear Co-Diallists, Thank you