Why Time Zones Are More Complicated Than They Look
How local time, UTC offsets and daylight-saving rules shape clocks around the world.
Read articleINDEPENDENT REFERENCE NOTES
Ideas, systems and the world around us.
Clear, practical introductions to technology, science, geography and everyday systems. A small collection of notes for curious minds.
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Building a Useful Knowledge System
A lightweight approach to collecting, organising and revisiting information without overengineering it.
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A short introduction to how cameras capture light and turn it into an image file.
Read articleThe Quiet Work of Public Libraries
Public libraries provide more than books: they support access to information, learning and community life.
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How observations, numerical models and probabilities combine to produce a forecast.
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An introduction to scale, coordinates, projections and the choices behind every map.
Read articleA BROAD VIEW
Useful context, without the noise.
Explore foundational ideas and practical explanations across several fields. Each note is designed to stand on its own and be easy to revisit.