Beginner Hobby Guides, Activity Ideas & Practical How-Tos

Why Are Blueprints Blue? — photo in a real-life setting

Why Are Blueprints Blue?

August 27, 2026

How an accidental Berlin pigment, a Victorian copying hack, and an ammonia-scented successor explain why drawings are still called blueprints.

What Is a Cyanotype? — photo in a real-life setting

What Is a Cyanotype?

August 25, 2026

The camera-less printing process from 1842: how sunlight and two iron salts turn paper Prussian blue, and how an algae catalogue became the first photo book.