For thousands of years, humans have relied on the movement of the Sun to understand the passage of time. But one ancient ...
The back of an ancient sundial reveals a cheat sheet of locations and latitude coordinates. © Science Museum / Science & Society Picture Library It’s the four or ...
In the garden of Tudor Place, the house museum in Georgetown, an 18th Century sundial is framed by a saying that begins: “With warning hand I mark time’s rapid flight.” Except, it doesn’t. Or not with ...
Curator Peggy Kidwell solves the mystery of a pocket sundial from the 1600s Peggy Aldrich Kidwell and Sara J. Schechner First, a bit of background on sundials. From ancient times, people have used ...
A few weeks ago during a visit to a friend, I decided to take advantage of his computer and have a look on E-bay to see whether there was anything interesting being offered for sale. I noticed a brass ...
Herbert Hoover reputedly wanted a car in every garage and a chicken in every pot. Woodruff Sullivan would settle for a sundial in every backyard. Sullivan, a University of Washington astronomy ...
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