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HankC wrote:
wrote: You've seen the photos of the survivors standing in the impact holes on the side of the tower begging for help. How could they do that if the temperatures were hot enough to 'melt steel'? The entire structure does not have to melt - just enough key components. Nothing had to melt, just get hot enough to lose strength and yield. With steel, this occurs well below the melting point. Hasn't anyone ever watched a blacksmith at work? For a physics professor he sure seems to ignore a lot of concepts such as momentum, torque, leverage and conservation of energy... And ignores common sense as well. Matt |