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"the calculation is a simple one" [SILV] 

Have you ever wondered how engineers do what they do? We're not referring to the type of engineer in the overalls and striped cap behind the controls of a locomotive, although that's a very literal definition of an engineer.

No, we're talking more along the lines of civil,mechanical, and structural engineering — the kind who make mathematical calculations concerning volume, mass, torque, load bearing, and more. Victor Hatherley was a bit of a hybrid of the two: a hydraulic engineer. He needed to understand physics but his job also required some working knowledge of a type of engine controlled by the flow of water.

Just what do such professionals need to know, and how do they make their calculations? One such answer lies within the walls of Baker Street Elementary...

Baker Street Elementary follows the original adventures of Sherlock Holmes and John Watson, as they and their friends work through the issues of elementary school in Victorian London. An archive of all previous episodes can be viewed at www.bakerstreetelementary.org.