Preț: | 30.00 lei |
Cod produs: | 479579 |
Autor(i): | Dan-George Uza |
Editura: | Editura Astromix |
Anul aparitiei: | 2020 |
Nr. pagini: | 70 pagini |
Limba: | engleza |
Tip coperta: | necartonata |
ISBN: | 9789730328783 |
Categorii: | Diverse, Astronomie, Stiintele Naturii, Carti |
From very long ago until a not-so-distant past, humans assessed time subjectively, by the length of their own shadows or the position of the sun relative to the buildings or objects around them. People then invented the sundial to better measure time according to the sun. Now there are about 200 sundials in Romania – Cluj County has about 20. Featuring close-up colour photographs, this book presents their history and locations using QR coded GPS coordinates and tips for easy access.
About the author
Dan-George Uza (b. 1984) is a Cluj native who is passionate about astronomy, ethnography, and especially gnomonics – the science of sundials. He has published several articles on these subjects, as well as two books and an annual series of astronomical sundial calendars.Contents
Measuring time by the sun
The first sundials
Old sundials in Cluj-Napoca
Old sundials near Cluj-Napoca
Some new sundials
Can you tell the time?
Pseudo sundials and other local curiosities
Regarding the orientation of some Cluj churches
Traces of an old sundial on St. Michael’s Church in Cluj -Napoca
Sulița – the spear: an old Romanian unit of time measurement
A practical method for constructing a sundial
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