How Long Is A Second? Knowledge Cards

How Long Is A Second? Knowledge Cards by Don Root


Authors
Don Root
ISBN
9780764948572
Published
Binding
Other
Pages
48
Dimensions
82 x 101mm

The 48 cards in this deck examine some of the challenges involved in modern timekeeping, from creating wristwatches to coordinating clocks around the world. And a few glances are cast at the past, with cards devoted to ancient calendars and clocks made of incense and dripping water.
Christmas Catalogue 2024 x BookFrenzy
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RRP: $16.99
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