Fireworks in their retail packaging. Fireworks are designed to produce loud explosions and displays of coloured light. Gunpowder usually creates the explosion,while the heat and energy cause metal chlorides and oxides to glow and provide colours (strontium,red; barium,green; copper,blue; sodium,yellow; calcium,orange). Sparks are created by the use of flakes and dust of metals,such as aluminium or iron | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Molloy, Cordelia |
Taille de l’image : | 5457 px × 4240 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |