How does a fire grow?

How does a fire grow?

Richard Saferstein (Former Chief Forensic Scientist) gives expert video advice on: How does a fire ignite?; How does learning where the fire originated help in CSI?; How does a fire grow? and more...

Fire is a chain reaction. As materials burn, they vaporize fuel and the fuel comes in contact with oxygen or air. One other thing that is happening is that as the oxygen, when the oxygen is combining with the fuel, it is also creating heat, so it's a vicious chain reaction. As a fire burns, it creates more vapour fuel. The air is always present and it also creates heat energy and feeds itself. A fire is a vicious chain reaction.