[DB]

You're trying to melt a lot of metal in a very short time.

Energy = time x power.

Short times take enormous power levels to develop enough energy to melt big things in that time.

[ableChair]

Thank you for stating what I already knew. Are you reading my posts? I'm talking about dissipation of energy in the atmosphere. That's the key question here. Usually, power is expressed as power = energy/time, but your algebra is correct.