Field Notes
Short entries built from real posts worth remembering — each one carries the original embed alongside a genuine, standalone writeup, so the content survives here even if the original post is ever deleted, the embed API changes, or the account goes away. Not every entry is about Pressure-Based Theory specifically; some are just real, well-explained physics worth having a durable home for. Where an entry touches PBT directly, that connection is called out explicitly rather than implied. See the Catalog for how the underlying physics in each entry is classified.