Chapter 02 of 5
Obsidian to Flux
From volcanic glass to the chemistry of Roman natron.
- Nature's Blueprint
The First Glass
Long before humans mastered fire, volcanoes produced obsidian. This natural glass forms when silica-rich lava cools too rapidly for crystals to grow.
- Atomic Chaos
Frozen Disarray
Like the amorphous solids discussed before, obsidian’s atoms are locked in a random, disordered state. It is a masterpiece of geological suddenness.
- Prehistoric Edge
Sharpness Beyond Steel
Because it lacks a crystal structure, obsidian breaks into edges just molecules thick. Neolithic cultures used it for surgical-grade blades.
17 more cards in this chapter
Could you answer this?
What was the primary purpose of adding natron or soda ash to silica sand in ancient glassmaking?
💎 Is Glass Really a Liquid?
- 01The Liquid MythDebunking the 'slow-flowing' glass theory through molecular reality.
- 02Obsidian to FluxFrom volcanic glass to the chemistry of Roman natron.
- 03The Secrets of MuranoThe hunt for 'cristallo' and the battle against iron impurities.
- 04Stress and StrengthUnderstanding Prince Rupert’s drops and tempered toughness.
- 05The Float and the FiberModern breakthroughs from molten tin to light-speed data.