20 Things You Didn't Know About... Fire

In the October issue of Discover magazine, LeeAundra Keany tells us that a bonfire is "basically a tree running in reverse," and other interesting facts.
1  Fire is an event, not a thing. Heating wood or other fuel releases volatile vapors that can rapidly combust with oxygen in the air; the resulting incandescent bloom of gas further heats the fuel, releasing more vapors and perpetuating the cycle.

2  Most of the fuels we use derive their energy from trapped solar rays. In photosynthesis, sunlight and heat make chemical energy (in the form of wood or fossil fuel); fire uses chemical energy to produce light and heat.

3  So a bonfire is basically a tree running in reverse.

4  Assuming stable fuel, heat, and oxygen levels, a typical house fire will double in size every minute.

Read the rest at Discover. Link -via Not Exactly Rocket Science

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