ignição
Ignição refers to the process of initiating combustion in a fuel-air mixture. This initiation typically requires an external energy source to overcome the activation energy barrier of the reaction. The most common form of ignition occurs in internal combustion engines, where a spark plug generates a high-voltage electrical spark to ignite the compressed fuel-air mixture within the cylinder. This controlled explosion drives the piston, producing mechanical work.
In other contexts, ignition can be achieved through various methods. For instance, a match or lighter provides