Possible Cone Shapes

2006-09-23 Thread John Carmichael
Look at this website that talks about various possible cone shapes. http://en.wikipedia.org/wiki/Nose_cone_design#Conical     In light of our discussions on blunting a cone to prevent the shadow from disappearing at long distances, look at the different cone shapes that have blunt points inst

Cone Websites

2006-09-23 Thread John Carmichael
FYI   I found the following websites that relate to cones: Who sells them, who makes them, how to make them, the machines that make them, etc.  Not surprising are the number of websites that feature nose cones for rockets!      http://www.gmfco.com/metal_fabricating/directions.html http://ww

Re: Giant Cone Gnomon?

2006-09-23 Thread Douglas Bateman
Dear John, I have seen John Moir briefly and he tells me that he only did the delineation, and the steelwork was done by others. This the Free Form Arts Trust mentioned in the book. I have looked at their website www.freeform.org.uk but it does not have a list of past projects. For others o

Conical steel structures

2006-09-23 Thread tony moss
John Carmichael queried conical steel structures and I've have located the uk offshoot of a French company - Petitjean?? - who do all sorts of lighting poles from small to massive. The following is for the largest: http://www.stainton-metal.co.uk/highmasts.htm but there are also conical stainl

Re: Giant Cone Gnomon?

2006-09-23 Thread John Carmichael
Hello all you great guys who answered my letter!   First, thanks for showing us the photos of existing large cones.  That chrome-plated metal gnomon at Swan Lake in Japan is a very nice one and similar to what I had in mind, although the sharp point makes it unsuitable for a nodus that must

"Vertical-Analemma-Sundial"

2006-09-23 Thread Josef Pastor
Dear Dialist,   In a school project in a Bavarian High School pupils and teachers constructed a vertical analemma sundial as been reported in a local newspaper “Passauer Neue Presse”. You canhave a look on the homepage: http://www.pnp.de/nachrichten/artikel.php?cid=29-13512215&Ressort=ala