A premixed flame propagates upstream from a spark source to ignite an oxy-acetylene torch, filmed at high speed.

A premixed flame propagates upstream from a spark source to ignite an oxy-acetylene torch, filmed at high speed.

By David Gagne, Christopher Francklyn, Faith Batrack, Jiffer Harriman for Spring 2013 Team Second.
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Sparks scatter as an oxy-acetylene torch burns through a plate of steel.
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Ignition of an oxy-acetylene torch, filmed at 3000 frames per second. Ignition took 0.7 seconds, while the flame front traveled at 2.5 m/s.

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