See Also: water clock(encyclopedia)
Herbal medicine (botanical medicine, herbology, phytomedicine)(health)
Medicine Lodge Memorial Hospital- Medicine Lodge(health)
Inside Water - Water Polo(gambling)
clock(encyclopedia)
around-the-clock(dictionary)
ten-o'clock(medicine)
o'clock(dictionary)
four-o'clock(encyclopedia)
Four-o'clock(medicine)

Ribofuranose (medicine) and water clock (sh)


Ribofuranose (medicine)


ribofuranose


The 1,4 cyclic furan form of ribose.


water clock (sh)




or clepsydra

Ancient device for measuring time by the gradual flow of water.

One form, used by North American Indians and some African peoples, consisted of a small boat or floating vessel that shipped water through a hole until it sank. In another form, water escaped through a hole in a vessel marked with graduated lines; specimens from Egypt date from the 14th century BC. The Romans invented a clepsydra consisting of a cylinder into which water dripped from a reservoir; a float provided readings against a scale on the cylinder wall. Galileo used a mercury clepsydra to time his experimental falling bodies. See also clock.