Nomogram

A nomogram (Greek νόμος nomos, law ' and γραμμή programs, line '), German nomogram is a graph of the values ​​of a mathematical function can be read approximately. The Nomographie (Doctrine for advice on nomograph ) was founded in 1850 by Léon Lalanne and Maurice d' Ocagne. The accuracy with which the function values ​​are read depends on the accuracy with which the markings are readable.

A nomogram usually contain scales, on which are plotted are known values ​​, and a scale in which the result can be read. When the nomogram is a function of two variables, then two scales are given on which the values ​​of the variables can be found and a scale that contains the desired values ​​/ results. Joining the two points on the scale, where the variable values ​​are, by a straight line intersecting the result of scale. The intersection with the result of the scale indicates a function value.

The scale lines are rarely straight. Complicated functions can often be better specify by curvilinear scale curves.

Beispielnomogramme

Other examples

  • Larson nomogram
  • Mathematical paper
  • Slide rule
Point (geometry) Smith chart Electrical impedance Graph paper
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