Author: khoitsma

Structural engineer, Python programmer

What I learned at the planetarium (and after) Mar 2022

• khoitsma
• General, Observation, Science
• 0 Comments

To build a scale model of the solar system outdoors:
· Use a basketball for the sun (9.5″ diameter)
· 86′ away from the sun is the earth at ~1/11 inch diameter …

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Subterranean Vibrations Feb 2022

• khoitsma
• General, Science
• 0 Comments

Matthias Rillig, a soil ecologist at the Free University of Berlin

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Prairie Home Companion Archives Feb 2022

• khoitsma
• General
• 0 Comments

great shows available

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Lecture by Richard Feynman – with transcript Feb 2022

• khoitsma
• General, Mathematics, Science, Video
• 0 Comments

Los Alamos from below

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The Busy Man’s Friend Feb 2022

• khoitsma
• General, Science
• 0 Comments

A beautiful book
· how to add a column of numbers

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2022 Google Extensions Jan 2022

• khoitsma
• Software
• 0 Comments

a few of my favorites

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