Creative Commons Attribution 4.0 International (CC BY 4.0)

Copyright (c) 2026 Geetansh Arora

The prose, diagrams and explanatory content of this site are licensed under the
Creative Commons Attribution 4.0 International License.

You are free to:
  Share  — copy and redistribute the material in any medium or format
  Adapt  — remix, transform, and build upon the material for any purpose,
           even commercially

Under the following terms:
  Attribution — You must give appropriate credit, provide a link to the
  license, and indicate if changes were made. You may do so in any reasonable
  manner, but not in any way that suggests the licensor endorses you or your
  use.

No additional restrictions — You may not apply legal terms or technological
measures that legally restrict others from doing anything the license permits.

Full licence text: https://creativecommons.org/licenses/by/4.0/legalcode

WHICH LICENCE APPLIES TO WHAT
  Prose, diagrams, page content, docs/     CC BY 4.0   (this file)
  JavaScript, Python, CSS, build scripts   MIT         (LICENSE-CODE)

NO WARRANTY. The numbers and models on this site are derived from public
sources and first principles and are provided for education. They are not a
substitute for a specification, a measurement, or professional engineering
judgement. See model-contract.html for what each model assumes and how well it
has been checked.