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.
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Previews available in: English
Subjects
Time measurements, Juvenile literature, TimeShowing 2 featured editions. View all 2 editions?
| Edition | Availability |
|---|---|
1
When Is Now?: Experiments With Time and Timekeeping Devices
April 1981, Doubleday
in English
0385132158 9780385132152
|
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Libraries near you:
WorldCat
|
2
When is now?: Experiments with time and timekeeping devices
1980, Doubleday
in English
- 1st ed.
0385132158 9780385132152
|
cccc
Libraries near you:
WorldCat
|
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History
- Created December 14, 2009
- 6 revisions
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| 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. |
| December 14, 2009 | Edited by WorkBot | link works |