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The Water Integrator (Russian: Гидравлический интегратор) was an early analog computer built in the Soviet Union in 1936 by Vladimir Lukyanov. It functioned by careful manipulation of water through a room full of interconnected pipes and pumps. The water level in various chambers (with precision to fractions of a millimeter) represented stored numbers, and the rate of flow between them represented mathematical operations. This machine was capable of solving non-homogeneous differential equations.
Water integrator was used to calculate the design of the Karakum Canal in the 1940s, the construction of the Baikal–Amur Mainline in the 1970s. Water analog computers were used in the Soviet Union until the 1980s for large-scale modelling.
- Hanly, Ken (1 December 2012). "In 1936 Soviet scientist Lukyanov built an analog water computer". Digital Journal. Archived from the original on 20 June 2018.
(Both online at Google Books)
- MIT water computer
- Translated article from Science and Life Russian magazine about water integrators in the Soviet Union
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