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An edition of When Is Now?
(1980)
When Is Now?
Experiments With Time and Timekeeping Devices
by Henry Humphrey
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Gives directions for making several time-keeping devices such as a sundial and water clock and discusses some ancient knowledge about measuring time.
Subjects
Time measurements, Juvenile literature, TimePreviews available in: English
Edition | Availability |
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1
When Is Now?: Experiments With Time and Timekeeping Devices
April 1981, Doubleday
in English
0385132158 9780385132152
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2
When is now?: Experiments with time and timekeeping devices
1980, Doubleday
in English
- 1st ed.
0385132158 9780385132152
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When Is Now?
First published in 1980
Subjects
Time measurements, Juvenile literature, TimeWork Description
Gives directions for making several time-keeping devices such as a sundial and water clock and discusses some ancient knowledge about measuring time.
History
- Created April 29, 2008
- 6 revisions
April 26, 2011 | Edited by OCLC Bot | Added OCLC numbers. |
August 5, 2010 | Edited by IdentifierBot | added LibraryThing ID |
April 24, 2010 | Edited by Open Library Bot | Fixed duplicate goodreads IDs. |
April 16, 2010 | Edited by bgimpertBot | Added goodreads ID. |
April 29, 2008 | Created by an anonymous user | Imported from amazon.com record. |