How does the atomic hydrogen or oxy-hydrogen torch function for cutting and welding purposes? Explain.

(N/A) Atomic hydrogen atoms are produced by the dissociation of dihydrogen $(H_2)$ with the help of an electric arc.
This process releases a huge amount of energy $(435.88 \ kJ \ mol^{-1})$.
This energy is utilized to generate a temperature of approximately $4000 \ K$,which is ideal for welding and cutting metals.
Atomic hydrogen is allowed to recombine on the surface to be welded,releasing the stored energy to generate the required high temperature.