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2023 Posts — most recent first

  • Short Takes
  • Hand Calculated Truss vs RISA Dec 2023
  • Kolam Muggu Rangoli Dec 2023
  • Wolfram — Writings Dec 2023
  • Feynman — The Relation of Physics to Other Sciences Dec 2023
  • Engineering Math Nov 2023
  • The Engineering Hub Nov 2023
  • AI outperforms conventional weather forecasting Nov 2023
  • Convolution as seen in Virtual Work Nov 2023
  • Photomath and Slide Rule Competition Oct 2023
  • CQ Brown Oct 2023
  • Excel — Drawing Automated Shapes with PyXLL Sep 2023
  • Design for Flood, Wind, Seismic, Snow, Ice, and Fire Aug 2023
  • Moment due to Linearly Varying Pressure Aug 2023
  • Galleries Aug 2023
  • Small Ideas — Large Effects Aug 2023
  • Instant Access to all Posts
  • Online Embedded Excel Aug 2023
  • Filter a Pandas Dataframe using PyXLL (with video) Jul 2023
  • Enhanced Lookup — Excel and PyXLL June 2023
  • Foundation Bearing Pressures using Jupyter and PyXLL (with videos) Mar 2023
  • Math Test Jun 2023
  • Solitary Math Jun 2023
  • Soil Texture Triangle with Plotly Jun 2023
  • Cédric Pilatte Jun 2023
  • ACI Rebar Lookup May 2023
  • Weathering Apr 2023
  • Encounter with Rust
  • Digit Sums and Cyclic Patterns Jan 2023


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Recent Posts

  • Minimal Footprint Dropdowns in Excel Oct 2025
  • Bow Out Aug 2025
  • Automated Foundation Rebar Drawing Aug 2025
  • Close Encounters in Batting Averages July 2025
  • 2D Engineering Interpolation Jun 2025
  • Lessons Learned (structural engineering) Apr 2025
  • Marimo Notebook Mar 2025
  • Fixed Fixed Beam with a Moment at any Point — Superposition Mar 2025
  • NotebookLM Feb 2025
  • Cantilever with a Concentrated Load at any Point — Castigliano’s 2nd Theorem Feb 2025
  • Most general equation for the area of a triangle Feb 2025

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What is the most general equation for the area of a triangle?
The Wait calculation
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Barnard’s Star and the 'Wait Equation'
IOP counterargument
The amazing arbelos (only good on a real desktop)
Surprises found in the arbelos (1954)
Arbelos from Wolfram MathWorld
Circle Theorems
• Circle Theorems Marked
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Two Semicircles
Japanese temple geometry
★ Sister Celine — a beautiful life
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★ Charles Stutzenbaker, Field Biologist
Neal Stephenson on the OS
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