Elementary clock
Elementary clock is the generic term for clocks that measure time using the elements or astronomically . These include hourglasses , water clocks , fire clocks as well as sundials , star clocks and the astrolabe .
The term is differentiated from mechanical wheel clocks and fully electronic digital quartz clocks that no longer have any mechanical parts.
Individual evidence
- ↑ Fritz von Osterhausen: Callweys lexicon, Callwey, Munich 1999, ISBN 978-3766713537 , page 85
Web links
Commons : Elementary clocks - collection of images, videos and audio files
