Category Archives: Newton

The Largest Early World Map …

Posted on April 25, 2019 by

… is unveiled for the first time: Click image for link to map with pan and zoom: On July 25, 01585, near the end of a century of unprecedented change, four Japanese boys stopped in Milan on their way back … Continue reading →

Posted in Newton | Tagged , | 2 Comments

3D Frame with zero stiffness hinges

Posted on April 9, 2019 by

The previous version of 3DFrame allowed for spring releases at beam ends, but if the release stiffness was entered as zero it was treated as a rigid connection for that freedom.  Effectively zero stiffness releases could be modelled by entering … Continue reading →

Posted in Excel, Newton, Beam Bending, Finite Element Analysis, Frame Analysis | Tagged , , , , , | 3 Comments

Rubick’s Cube Solves Itself

Posted on March 29, 2019 by
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Numerical Integration; Tanh-Sinh Quadrature v. 4.42

Posted on March 17, 2019 by

Back to Newton and Excel. I recently received a new update to the Tanh-Sinh Quadrature spreadsheet from Graeme Dennes, which may be downloaded from: Tanh_Sinh Quadrature. From the Readme: The Tanh-Sinh quadrature workbook has been enhanced as follows: The Tanh-Sinh … Continue reading →

Posted in Charts, Excel, Maths, Newton, Numerical integration, UDFs, VBA | Tagged , , , , , , , , | Leave a comment

Sydney Opera House: the designs that didn’t make it

Posted on February 10, 2019 by

From the Guardian: In 1956, the New South Wales premier Joseph Cahill announced a competition – open to anyone – to design a national opera house at Bennelong Point in Sydney. There were more than 200 entries and the eventual … Continue reading →

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Multiple Integration with Scipy

Posted on January 31, 2019 by

Scipy has 3 functions for multiple numerical integration in the scipy.integrate module: dblquad: Compute a double integral. tplquad: Compute a triple integral’ nquad: Integration over multiple variables. I have written six functions to call these functions from Excel, via Pyxll: Each … Continue reading →

Posted in Excel, Link to Python, Maths, Newton, Numerical integration, NumPy and SciPy, PyXLL, UDFs | Tagged , , , , , | 6 Comments

Another (very slow) way of computing pi

Posted on January 24, 2019 by

The previous post included 100 Python code one-liners for calculating pi that recalculates in a fraction of a second.  The video below shows an alternative approach that is a little slower: How much slower?  If you had a computer that would … Continue reading →

Posted in Bach, Maths, Newton | Tagged , , | 2 Comments