The explanations, text, diagrams, images and videos in this repository, meaning
glassbox.json, history.json and everything in glassbox/, are © 2026 Deepankar Biswas and
licensed under the Creative Commons Attribution 4.0 International licence
(CC BY 4.0): https://creativecommons.org/licenses/by/4.0/
You are free to share and adapt them for any purpose, even commercially, as long as you give appropriate credit, link to the licence, and say if you made changes. Suggested credit:
“How does a harmonium work?” by Glassbox (glassbox.how/e/harmoniumclear), CC BY 4.0
The source code is licensed separately under the MIT licence (see LICENSE).
Third-party components keep their own licences, next to their files.
The Glassbox name and logo are not covered by either licence.