How To Start A Fire With Air
This is one of those things that everyone should just have in their car for unforeseen emergencies. A fire-piston will allow you to start a fire anywhere at anytime without the use of a lighter or matches.
“The principle of increasing temperature by method of compressing air is explained by the adiabatic process in which the internal energy of a gas must increase when a mass of air is rapidly compressed or the volume of a mass of air is rapidly decreased. The resulting increase in internal energy results in a temperature rise sufficient to light an ember, just like the pressure produced by an ice skater’s blade is sufficient to increase the internal energy of the ice which turns ice under the blade into water.”
Link to making your own fire-piston
[Via Make]
