Hi John, Yep, you got it, exactly! I don't know of a better way.
Edley McKnight From: "John Carmichael" <[EMAIL PROTECTED]> To: "Sundial List" <[email protected]> Date sent: Mon, 11 Sep 2006 07:48:36 -0700 Subject: Cone Nodus Design Improvements Hi Listers: I think that I found two ways to improve the design of cone nodi so that their shadows are easier to read and more precise. I noticedthis problem with long shadows produced by narrow sharp cone nodi: The sharp tip of a narrow cone nodus casts a shadow that is invisible when the shadow is long, giving a false sundial face reading for the location of the tip's shadow. In other words, the shadow was too short. To correct this problem, I think that blunting (rounding off) a cone's sharp tip so that its diameter is equal to the minimum diameter of the nodus nearly eliminates the fuzziness of the tip's shadow and moves the nodus further down the cone's long axis. Widening the base of the cone decreases the amount of blunting needed. Conclusion: The best cone nodus is wide and blunt. Please look at this drawing that shows an example of this design modification. Doesthis solutionmake sense and seem reasonable? click here: http://AdvanceAssociates.com/Sundials/ConeNodusDesignImprovement.pdf thanks, John --------------------------------------------------- https://lists.uni-koeln.de/mailman/listinfo/sundial
