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Originally posted by mnemeth1
It is impossible for it to be "sun glint".
The flashes are occurring in the shadow of the building.
Originally posted by mnemeth1
I ABSOLUTELY BELIEVE NANO-THERMITE WAS USED
However, the size and type of charge used is what has become clear to me from this. There were numerous small explosive charges used. There was not huge massive piles of explosives as some have suggested.
Absolutely, nano-thermite explosives were used.
In both cases, the portion of the building that had been damaged by the airplanes failed, which allowed the section above the airplane impacts to fall onto the undamaged structure below. As the collapse progressed, dust and debris could be seen shooting out of the windows several floors below the advancing destruction.
While they were designed to support enormous static loads, they provided little resistance to the moving mass of the sections above the floors where the collapses initiated. Structural systems respond very differently to static and dynamic loads, and since the motion of the falling portion began as a free fall through the height of at least one story (roughly three meters), the structure beneath them was unable to stop the collapses once they began. Indeed, a fall of only half a meter would have been enough to release the necessary energy to begin an unstoppable collapse
After the planes hit the buildings, but before they collapsed, the cores of both towers consisted of three distinct sections. Above and below the impact floors, the cores consisted of what were essentially two rigid boxes; the steel in these sections was undamaged and had undergone no significant heating. The section between them, however, had sustained significant damage and, though they were not hot enough to melt it, the fires were weakening the structural steel. As a result, the core columns were slowly being crushed, sustaining plastic and creep deformation from the weight of higher floors. As the top section tried to move downward, however, the hat truss redistributed the load to the perimeter columns. Meanwhile, the perimeter columns and floors were also being weakened by the heat of the fires, and as the floors began to sag they pulled the exterior walls inwards. In the case of 2 WTC, this caused the eastern face to buckle, transferring its loads back to the failing core through the hat truss and initiating the collapse. The section above the impact area then tilted in the direction of the failed wall. In the case of 1 WTC, the south wall later buckled in the same way, and with similar consequences.[27]
Originally posted by mnemeth1
reply to post by thedman
no buddy, what I'm seeing are explosions.
If you watched the video, its clear there is no "pancake"