Author Archives: dougaj4

1952 Vincent Black Lighting

Posted on April 19, 2019

A live performance from Richard Thompson: My favourite comment: “Trying to decide if Suzanne Vega and Louden Wainwright are looking on in awe or thinking “shit we’re next”!”

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3D Frame with zero stiffness hinges

Posted on April 9, 2019

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 →

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Rubick’s Cube Solves Itself

Posted on March 29, 2019
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Bett’s Dance

Posted on March 24, 2019

I have posted a link to Bert Jansch playing Bett’s Dance here before: Jansch and Renbourn live Here is another live version: … and (probably) a studio version, included on the album  “Living in the Shadows, Part 1”, which is available … Continue reading →

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Numerical Integration; Tanh-Sinh Quadrature v. 4.42

Posted on March 17, 2019

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 →

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Mini-tours of India 9

Posted on March 15, 2019

To Jaipur. The capital and largest city of Rasjasthan, also known as the Pink City: … and finally, we follow a monkey on a moped back to New Delhi, the airport, and home.

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Mini-tours of India 8

Posted on March 14, 2019

We arrive in Jodhpur, the Blue City, and the second largest in Rajasthan:

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