Category Archives: Newton

Building dances to an earthquake’s beat

Adam Pascale from the Seismology Research Centre recently shared this animation (click on controls bottom right for High Quality and Full Screen views): … it’s from a building in the Philippines about 130km (hypocentral distance) from a magnitude 6.1 earthquake … Continue reading

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Lennox Bridge

Last December I joined Bill Harvey on a visit to Lennox Bridge west of Sydney.  Bill has now documented the visit in his Bridge of the Month site, including history, comments on the structural form, and a dynamic 3D model … Continue reading

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The Concrete Institute of Australia – Golden Jubilee

The Concrete Institute of Australia will celebrate 50 years in 2020. The Institute was originally formed when members of the Australia Prestressed Concrete Group proposed a change in 1968 where it was resolved to adopt the name Concrete Institute of … Continue reading

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Dancing Pendulums Revisited

I have previously posted on Dynamically Defined Dancing Pendulums, using the Strand7 FEA program to generate the motion of a series of pendulums of varying length.  I have now updated that video using the latest Beta version of the program (Rel … Continue reading

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More Python Traps

I recently posted on some Python Traps, focussing on code where changes in the values of sub-routine arguments were not reflected in the calling routines.  The reverse can also be a problem: if an array, a, is passed to a … Continue reading

Posted in Arrays, Excel, Link to Python, Newton, NumPy and SciPy, PyXLL, UDFs | Tagged , , , , , | Leave a comment

LinEstGap with non-linear functions

The LinEstGap user defined function (UDF) allows the built-in Linest function to be used on data with empty cells or hidden rows, returning results that agree with the chart trend-line function, which automatically ignores blank cells and hidden data.  It … Continue reading

Posted in Arrays, Curve fitting, Excel, Maths, Newton, UDFs, VBA | Tagged , , , , , , , , , | 1 Comment

Katherine Johnson, NASA Legend

Cartoon by Steve Breen from The San-Diego Union Tribune. More on Katherine Johnson.

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