FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -The first tide-predicting machine, designed and built in 1872–73, and followed by two larger machines on similar principles in 1876 and 1879, was conceived by Sir William Thomson.

Detailed explanation-2: -The first tide-predicting machine was designed by Sir William Thomson (afterwards Lord Kelvin) and was made in 1873 under the auspices of the British Association for the Advancement of Science.

Detailed explanation-3: -Tide-predicting machine designed by William Thomson (later Lord Kelvin), built by A. Légé & Co., 20 Cross Street, Hatton Gardens, London, 1872. The machine is a mechanical analogue computer which traces the tidal curve for a given location, by combining ten astronomical components.

Detailed explanation-4: -An efficient way of guesstimating how much water there is, at any given time of day, over a particular point. The rule of twelfths works like this; take the difference in height between the high and low tide on that day, and divide that by 12 equal chunks.