Beyond the Classroom — Sources & Credits
Beyond the Classroom is an educational series by Equatika exploring science, mathematics, nature, technology, and other subjects beyond the conventional classroom.
This page provides photographic credits, original source links, licensing information, and selected references for posts in the series.
Inside a Computer Mouse — October 17, 2026
Photographic sources
1. Silicon chip from a computer laser mouse
Alexander Klepnev (original photograph); IamMM (derivative image).
Wikimedia Commons · CC BY-SA 4.0
Used on Slides 1, 4, and 5.
2. Disassembled SteelSeries Rival optical mouse
Kent Madsen.
Wikimedia Commons · CC BY-SA 4.0
Used on Slide 2.
3. Tracks on a silicon integrated circuit
Alexander Klepnev.
Wikimedia Commons · CC BY 4.0
Used on Slide 3. This photograph depicts a different integrated circuit.
Modifications and licensing
The photographs were cropped and placed within the Beyond the Classroom carousel layout. Adaptations of the CC BY-SA 4.0 photographs are made available under CC BY-SA 4.0. The third photograph remains attributed under CC BY 4.0.
The original files, photographer information, and complete license terms are accessible through the links above.
Scientific references
Wikimedia Commons — Original image descriptions, photographic methods, and documentation of the 28-image focus stack.
Nikon MicroscopyU — Reflected Light Differential Interference Contrast Microscopy. Reference for the optical technique used to reveal fine structures in integrated circuits.