Overview
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Explore the fascinating world of pyrotechnics in this family lecture on the history and science of modern fireworks. Delve into the chemistry behind these dazzling displays as Professor Chris Bishop, presenter of the 2008 Royal Institution Christmas Lectures, demonstrates how Chinese incendiaries made from honey led to the development of gunpowder. Discover the surprising connection between firework bangs and the origins of photography, and learn how a kitchen accident in the 19th century revolutionized firework-making chemistry. Through engaging experiments and demonstrations, gain insights into the ingredients and processes used in creating various types of fireworks, from basic gunpowder to complex aerial shells. Understand the principles of thermal runaway, confined explosions, and the role of different chemicals in producing spectacular effects like crackles, strobes, and whistles. This comprehensive exploration of firework science covers everything from historical developments to modern manufacturing techniques, providing a captivating blend of chemistry, physics, and pyrotechnic artistry.
Syllabus
Introduction
Disclaimer
The experiment
The three ingredients
Potassium Nitrate
Charcoal
Hydrogen and Oxygen
Experiment
Making gunpowder
The problem
Commercial gunpowder
How to burn gunpowder faster
Testing the predictions
Thermal runaway
Confined gunpowder
Aluminium
How fireworks are made
The 8inch mortar
Categories of fireworks
Blackmatch
Plastic Tube
Plastic Igniter Cord
Electric Igniter
Mortars
Crackle
Strobing
The Whistle
Taught by
The Royal Institution