Category Archives: Newton

A Treatise on the Mathematical Theory of Elasticity

Posted on 10/10/2020 by dougaj4

The book The Man Who Knew Infinity by Robert Kanigel describes the life of the Indian mathematician  Srinivasa Ramanujan, and also his Cambridge mentor G.H. Hardy. It mentions that Hardy was influenced by reading “A Treatise on the Mathematical Theory … Continue reading →

Posted in Beam Bending, Maths, Newton | Tagged , , , , | Leave a comment

Using Excel with Python and ctypes

Posted on 05/10/2020 by dougaj4

The Strand7 API provides an interface between the Strand7 Finite Element Analysis program and external software. It works with many different languages, including Python, which uses ctypes to transfer data to and from the API functions. It is essential that … Continue reading →

Posted in Beam Bending, Excel, Link to dll, Link to Python, NumPy and SciPy, PyXLL, Strand7, UDFs | Tagged , , , , , | Leave a comment

Spherical Geometry and Vincenty’s Formulae

Posted on 27/09/2020 by dougaj4

Wikipedia has detailed articles on: Spherical Geometry  and Vincenty’s Formulae (for geometric calculations on an ellipsoid). The spreadsheet Vincenty.zip uses those resources to perform the following calculations, using both on-sheet calculations and VBA user-defined functions (UDF’s): Calculation of distance and … Continue reading →

Posted in Computing - general, Coordinate Geometry, Excel, Maths, Newton, UDFs, VBA | Tagged , , , , , , | 7 Comments

Wembley Tower 2

Posted on 04/09/2020 by dougaj4

Following from the previous post, nearly all of the 68 designs for the Wembley Tower were in steel or iron, but there was just one with a truly unique design feature, it was to be built of concrete: If it … Continue reading →

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The Wembly Tower

Posted on 30/08/2020 by dougaj4

Late in the 19th Century a group of Londoners decided that London should have a tower taller and grander than the Eiffel Tower.  A competition was held, and construction started at the then rural area near Wembly, but construction and … Continue reading →

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