DEFLAGRATING SPOON

DEFLAGRATING SPOON

• This Deflagrating Spoon comprises a plated wire with spoon plus a circular metal cover plate fitte­d with a rubber stopper to hold the spoon at any height.
• Length of spoon 380mm.

(Wikipedia excerpt: ..."(chemistry) A long-handled spoon with a cover, lowered into a glass vessel filled with a gas to demonstrate deflagration. ...Flame physics

The underlying flame physics can be understood with the help of an idealized model consisting of a uniform one-dimensional tube of unburnt and burned gaseous fuel, separated by a thin transitional region of width δ {\displaystyle \delta \;} in which the burning occurs. The burning region is commonly referred to as the flame or flame front. In equilibrium, thermal diffusion across the flame front is balanced by the heat supplied by burning.[8][9][10][11]

Two characteristic timescales are important here. The first is the thermal diffusion timescale τ d {\displaystyle \tau _{d}\;}, which is approximately equal to
τ d ≃ δ 2 / κ , {\displaystyle \tau _{d}\simeq \delta ^{2}/\kappa...")

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