Tom blok
Wheels made of bamboo
Gul streg
Photo 511 x 506 pixels, 43,6 K
 
A water wheel in Chiang Mai, Thailand
Once there were a great many of these wheels, now (1995) they are rare. By looking carefully one can see five water jets near the rim. The jets are caught by a trough from which the water runs into a tobacco field through a bamboo tube.
Look below to see a drawing of a much bigger wheel.
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Photo 511 x 506 pixels, 43,6 K
 
These two wheels are from China. Even though the wheels turn very slowly, they lift a great amount of water. The wheels are turning day and night and throughout the year.