To Gianni, Warren and other members of this list, Gianni has made a drawing for Warren for an "azimuthal" sundial for his wall. lat. 42N long. 88W inclination 90 declination 26W
I also made such a drawing, however I didn't correct the 2 degrees for standard meridian ( 90 degrees ) Now I also added this correction and the final drawing is as attached. Although I count the dates from outside to inside and Gianni in reversed order it is possible to check if both drawings will give the same reading of time. I checked some points and I conclude both the drawings give the same results. Now I am waiting for a picture of the realized dial by Warren.......... Best to all, Fer. Fer J. de Vries [EMAIL PROTECTED] http://www.iae.nl/users/ferdv/ Eindhoven, Netherlands lat. 51:30 N long. 5:30 E ----- Original Message ----- From: Gianni Ferrari <[EMAIL PROTECTED]> To: Sundial List <[email protected]> Sent: Tuesday, February 22, 2000 12:21 PM Subject: R: azimuthal gnomon length problem > Hi Warren, > I send attached the image of a sundial for your wall. > The style is perpendicular to the wall and the date lines are concentric > circles as in the horizontal azimuthal dial. > As you want the style perpendicular to the wall the sundial cannot be > azimuthal. > With vertical plane the only azimuthal s. that I know is the one with the > style vertical parallel to the wall. > The date line can be choosen in different ways : the simplest is to draw > horizonthal straight lines > > Because this message has to be smaller then 25 Kb I send only to you , in a > private message, a picture of this sundial and other 2 examples of dials for > your wall. > > If someone want to see theese images I can send them in a next message > > Best > > Gianni Ferrari > > > Attachment converted: Macintosh HD:spin2.gif (TIFF/JVWR) (0000F18A)
