Hello Peter and all, Yes there have been many excellent articles in Scientific American. I have been a subscriber for over 60 years and a couple of their sundial articles got me interested in sundials. The first are a couple of articles published in the late 1950’s in the Amateur Scientist column: “A Universal Sundial” using a globe by Richard M Sutton and “A Sundial that Keeps Clock Time” by Richard L Schmoyer. Both were published in a “Book of Projects for the Amateur Scientist” published in 1960. The Schmoyer sundial is well known to those on this list. It is currently sold by Bill Gottesman (https://www.precisionsundials.com/). In December 1980 and May 1981 the Amateur Scientist published articles by Jeral Walker on “An Easy to Read Sundial”. This described the math and a computer program to calculate analemmic hour lines. The second article included corrections to the first and there is still a minor errors. This article taught me and many others some of the math to design sundials.
Scientific American has had a good run with excellent articles by those doing the science. Lately they changed their direction and content with less science and more speculation in an attempt to maintain their readership. I find I am less interested in their articles. Regards, Roger Bailey Walking Shadow Designs N 48.6, W 123.4 Sent from Mail for Windows 10 From: Peter Mayer Sent: June 3, 2019 3:24 AM To: Sundial List Subject: Fwd: Scientific Americal -This Month in the Archives Hi, This message just came from Scientific American. The list of articles on sundials is only a partial one; I think at least twice as many have appeared in SA over the years. best wishes, Peter -------- Forwarded Message -------- Keeping Track of Time with the Sun Very accurate—for a sun clock. August 1935. Sundials are one of the oldest scientific tools humans use. Up to a couple of centuries ago they were the best way to keep track of time. • December 1925: The Mayans kept remarkably good track of time using “the largest sundial in the world.” • February 1934: “Sundials and Their Construction”—part 1 of a nine-part series that will tell you everything there is to know. • August 1935: Quibbles about useless decorative garden implements aside, here’s an article on highly accurate “sun clocks” for garden use. • August 1991: “What in Heaven Is a Digital Sundial?” Our “Mathematical Recreations” columnist Ian Stewart explains it all. Virus-free. www.avast.com --- This email has been checked for viruses by AVG. https://www.avg.com
--------------------------------------------------- https://lists.uni-koeln.de/mailman/listinfo/sundial
