Image Credits

Every diagram, icon, and illustration used in the Olsie Discovery Archive — including the mark in the site header, the subject-area icons, and the diagram accompanying each entry — is an original editorial illustration produced specifically for this archive. None are photographs, and none are reproductions of third-party copyrighted material.

We chose this approach deliberately: it lets every entry carry a consistent, purpose-built visual explanation of its subject (for example, showing the light path through a telescope, or the layers of a solar cell) without the licensing uncertainty that comes with sourcing historical photographs of uneven and often unclear copyright status.

License

These original illustrations are © 2026 Olsie Discovery Archive. They may be viewed and shared for personal and educational reference with attribution; see our terms of use for details on reuse.

Diagram index

Each entry's diagram is listed below with the entry it illustrates.

• The Wheel: Origins, Uses, and Historical Impact
• The Development of Paper and Written Information
• The Magnetic Compass and the Transformation of Navigation
• The Printing Press and the Expansion of Knowledge
• The Microscope and the Discovery of the Invisible World
• The Telescope and the New View of the Universe
• The Steam Engine and the Mechanization of Work
• The Discovery of Electromagnetism
• Photography: From Chemical Plates to Permanent Images
• The Telegraph and Long-Distance Communication
• The Telephone and the Evolution of Voice Communication
• The Internal Combustion Engine
• The Electric Light and the Development of Practical Lighting
• Radio and the Birth of Wireless Communication
• X-Rays and the Ability to See Inside Matter
• The Airplane and the Development of Controlled Flight
• The Discovery of Penicillin and the Antibiotic Era
• From Mechanical Calculators to Electronic Computers
• The Transistor and the Miniaturization of Electronics
• The Discovery of the Structure of DNA
• The Development of the Modern Solar Cell
• Artificial Satellites and Space-Based Technology
• The Integrated Circuit and the Growth of Modern Computing
• The Origins and Expansion of the Internet
• Fiber Optics and Communication Through Light
• The Barcode and the Automation of Product Identification
• GPS and Satellite Navigation
• The Development of 3D Printing
• The World Wide Web and the Organization of Online Information
• The Development of Lithium-Ion Batteries