Description
Object history by Josh Nall, 09/09/2008.
Before the advent of computers, one of the most effective way of modelling complex three-dimensional mathematical functions was to use string models. In this model the silk threads define two intersecting three-dimensional surfaces. The brass framework is hinged in four places, so that the shape of the surfaces can be altered. The string lengths always remain constant, but the framework is able to model quite extreme variations in shape.
24/07/2026
Created by: Alejandro Malkinson-Gregori on 24/07/2026

Description
Making mathematical models was an integral part of a mathematician’s research in the late nineteenth century. The practice of constructing mathematical models (like this string model) originated with Gaspard Monge (1746–1818) who invented descriptive geometry, which represented three-dimensional surfaces in two dimensions. He also worked at classifying ruled surfaces. In modeling, tightly stretched strings following the path of a generated line best described a ruled surface according to Monge. He and his student Théodore Olivier (1793–1853) designed and built such models. This string model is likely from the mid nineteenth-century. Silk threads define two intersecting three-dimensional surfaces. The brass framework is hinged at four places, so that the shape of the surfaces can be altered. The string lengths always remain constant, but the framework is able to model quite extreme variations in shape.

11/03/2014
Created by: Allison Ksiazkiewicz on 11/03/2014