 |
| HOME | ABOUT | CONTACT |
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z |
clepsydra
An ancient forerunner of the clock, used by the Greeks and Romans to measure time. The clepsydra measured the controlled flow of water, mercury, or other liquids through a narrow opening.
Also on this site:
Encyclopedia of Science
Encyclopedia of Alternative Energy & Sustainable Living