Contributors:
chemistS, pyrotechnicists
Project Manager:
Mathieu Marion
Objectives:
The title of this project summarises the issues it addresses. Firstly, the students are introduced to the techniques that combine chemistry and the art of pyrotechnics: combustion, combustive and combustible, how does it all work? What is the correct composition to combine sulphur, saltpetre and aluminium? Then, the students take part in a competition. The candidates present their final project to the jury; which categories will they enter for? Which special (light and sound) effects? What is their narrative? What music will they use? To help the students navigate through this universe and devise their own production, the workshop is organised into two phases:
Workshops:
The Science of Combustion
What are the connections between chemistry and pyrotechnics? What reactions and chemical transformations occur during combustion? To understand how fireworks function, the class delves into the heart of the different pyrotechnic processes. With the chemist, this initial phase is structured around experiments and tests to learn the basic principles (understanding proportions, reactions, detonations, friction) and understand components and elements (gunpowder and metals, potassium and sodium). To complete this phase, the students take apart and analyse industrial fireworks: fuse, powder, paper tubes and lighting mechanisms.
Shapes, colours and displays
Using a video of a firework display, the students dissect and discuss its technical and artistic principles. It’s now up to them to devise their own “narrative” and study the three criteria for the final competition (synchronisation, best special effects and originality of the scenarios). With the pyrotechnicist, the class plans the sequence, colours and forms, and outlines them; they also incorporate visual and sound effects specific to their original firework display: coloured smoke, flashes, detonations and the choice of music. They gather together their intentions into a scenario and enter this onto software to design firework displays.
Participating Schools:
- Antoine Laurent de Lavoisier, Pantin
- Marcelin Berthelot, Montreuil
- Jean Jaurès, Saint Ouen
- Marcel Cachin, Le Blanc Mesnil
- Maximilien Robespierre, Epinay-sur-Seine
Photos: DAMIEN DELDICQUE, JÉRÔME AUBRY & ALEXANDRE SCHUBNEL, LABORATOIRE DE GÉOLOGIE DE L’ENS PARIS.
Avec la période de confinement, les démarches initiées en collège ont connu quelques changements, également quelques aménagements et surprises. Le moment est venu de présenter ce qui a été finalisé par les élèves, les enseignants et les intervenants. Cet espace de diffusion rapporte nombre de témoignages visuels, sous des formats à la fois fixes et animés, et invite les visiteurs à une découverte différenciée : en cela par projet identifié ou d’une manière plus aléatoire.