Fire Starter

I have seen this before,

pumping the piston with short strokes while holding the open end with the other hand will ignite the dry material inside.  The trick is to get the speed just right.

If we apply,

$\cfrac{1}{2}m_{\rho}v^{ 2 }_{ { max } }=E_{input/proton}=\cfrac{1}{2}c^{ 2 }*3.4354*density*\cfrac{1}{particle\,count\,per\,type}$

from the post "Sonic Boom" dated 13 Oct 2017 to kerosene of average density of $795\,kgm^{-3}$ and formula $C_{13.5}H_{29}$

$\cfrac{1}{2}m_{\rho}v^{ 2 }_{ { max } }=E_{input/proton}=\cfrac{1}{2}c^{ 2 }*3.4354*795*\cfrac{1}{13.5*6+29*1}$

we have $v_{boom}=24.83\,ms^{-1}$ or $89.38\,kmh^{-1}$

And when kerosene is diluted with $70\%$ gasoline, its density drops to $30\%$ with its average molecular formula unchanged,

$v_{boom}=24.83*0.3$

$v_{boom}=7.45\,ms^{-1}$  or  $26.81\,kmh^{-1}$

Gasoline in this mixture will have a reduced density by $70\%$, and so a similarly reduced boom speed of,

$v_{boom}=37.46*0.7$

$v_{boom}=26.22\,ms^{-1}$  or  $94.40\,kmh^{-1}$

If boom speed is an indication of flash point (wrong not flash point, instead, kindle point), this is how mixing fuel reduces flash point.  Molecular vibrations is directly proportional to temperature.  At high temperature, in high vibrations, we achieve boom speed and the fuel is nuclear.

Note:  Auto-ignition temperature or kindling point of a substance is the lowest temperature at which it spontaneously ignites in normal atmosphere without an external source of ignition, such as a flame or spark.  Is should be kindling point and not flash point that is referred to above.