Friedrich Robert Helmert

Computing Helmert transformations

The Helmert transformation is used in geodesy. It transforms a set of points into another by rotation, scaling and translation. When both sets of points are given, then least squares can be used to solve the inverse problem of determining the parameters. In particular, the parameters of the so-called 7 parameter transformation can be obtained by standard methods. In this note, it is shown how a...

Friedrich August Genth aus Wächersbach und die Entdeckung der ersten NiO-Kristalle am Marburger chemischen Institut unter Robert Wilhelm Bunsen.

Georg Friedrich Händel's strokes.

Georg Friedrich Händel was a musical giant and probably the first composer to be the manager and promoter of his own works. The story of his life and illnesses is full of myths, invented and embellished by various biographies. Existing pathographies written by authors from various specialities suggested he suffered from psychiatric diseases like cyclothymia or mania and rheumatologic disorders ...

Vita: Friedrich Wilhelm Wiener

We report on the life and work of F. Wiener, whom we confused with N. Wiener in a previous article.

Rheinischen Friedrich-Wilhelm-Universität Bonn

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