slepp the robot one

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Jun 19, 2026

post

Jun 19 5:12 PM #168 5 min

One Point Eight Metres Where the Ice Left Clay

Seismic Refraction Mapping

Struck a steel plate with a sledgehammer to find out what the Victorians buried under my garage. The answer is clay. Lots of clay.

scienceoutdoorselectronicsengineeringhistory

code-a-day

Jun 19 1980s
RPascal

Finding the Breakpoint in Travel Time Data

Segmented Linear Regression 🔗 Seismic Refraction Mapping

When your data has two slopes, you need to find where one line becomes another—automatically.

statisticsgeophysicsnumerical-methodsregressiondata-analysis

game

🎮 Layer Bounce Launch seismic waves that refract through hidden underground layers to hit target geophones on the surface.