Credits

Image credits

Every non-brand image on this site is real and openly licensed — no AI generation, no unlicensed scraping. Sources and licenses are credited here exactly as each one requires.

Physics

Free-body diagram — a block on an inclined ramp, showing weight, friction and the normal force.

File:Free body diagram.svg, Wikimedia Commons. Author: AndrewDressel (original), derivative work by Cdang. Licensed under CC BY-SA 3.0.

Chemistry

Bohr atom model — a nucleus with labelled K, L and M electron shells.

File:Bohr-atom-shells-KLM.svg, Wikimedia Commons. Author: MikeRun. Licensed under CC BY-SA 4.0.

Biology

A labelled animal cell — cytoplasm, nucleus, cell membrane and mitochondria.

File:Simple diagram of animal cell (en).svg, Wikimedia Commons. Author: domdomegg. Licensed under CC BY 4.0.

Maths

The Pythagorean theorem — squares on the sides of a right triangle, proved by rearrangement.

File:Pythagorean.svg, Wikimedia Commons. Author: en:User:Wapcaplet (derivative chain: Michael Hardy → Wapcaplet → Steff → Leo2004). Licensed under CC BY-SA 3.0.

Home page photo

A mother and daughter reading a book together at home — the photo in the home page "who it’s for" band.

Mother and Daughter Reading a Book while Sitting on the Couch, Pexels. Author: RDNE Stock project. Licensed under Pexels License.