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 -------- [https://www.scientificamerican.com/themes/responsive/images/newsletter/border_left.gif] Keeping Track of Time with the Sun [https://www.scientificamerican.com/themes/responsive/images/newsletter/border_right.gif] [Clock]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:<http://links.email.scientificamerican.com/ctt?kn=21&ms=NTk0MzIwMjgS1&r=MjIxNzEyNzAxMDMwS0&b=0&j=MTY2MDMzMDY5MAS2&mt=1&rt=0> The Mayans kept remarkably good track of time using “the largest sundial in the world.” * February 1934:<http://links.email.scientificamerican.com/ctt?kn=12&ms=NTk0MzIwMjgS1&r=MjIxNzEyNzAxMDMwS0&b=0&j=MTY2MDMzMDY5MAS2&mt=1&rt=0> “Sundials and Their Construction”—part 1 of a nine-part series that will tell you everything there is to know. * August 1935:<http://links.email.scientificamerican.com/ctt?kn=6&ms=NTk0MzIwMjgS1&r=MjIxNzEyNzAxMDMwS0&b=0&j=MTY2MDMzMDY5MAS2&mt=1&rt=0> Quibbles about useless decorative garden implements aside, here’s an article on highly accurate “sun clocks” for garden use. * August 1991: <http://links.email.scientificamerican.com/ctt?kn=32&ms=NTk0MzIwMjgS1&r=MjIxNzEyNzAxMDMwS0&b=0&j=MTY2MDMzMDY5MAS2&mt=1&rt=0> “What in Heaven Is a Digital Sundial?” Our “Mathematical Recreations” columnist Ian Stewart explains it all. [http://links.email.scientificamerican.com/open/log/59432028/MjIxNzEyNzAxMDMwS0/0/MTY2MDMzMDY5MAS2/1/0] [https://ipmcdn.avast.com/images/icons/icon-envelope-tick-round-orange-animated-no-repeat-v1.gif]<https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient> Virus-free. www.avast.com<https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient>
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