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Did you know that the South Tower did not collapse but burst open an that the top of the tower broke off and toppled over?
Did you know that during the disintegration of the South Tower, the top started to rotate for about 2.5 seconds, started its freefall downwards – and then suddenly stopped to rotate?
Conservation of angular momentum is the tendency of a rotating solid object to continue rotating at the same rate in the absence of torque.
Initially the block consisting of the top 30 stories of the tower acted as a solid object, and rotated about a fulcrum near the impact zone.
Although the fulcrum was the axis of rotation, the block had two types of momentum: the angular momentum of the block around its center of gravity, and the linear momentum of its center of gravity tilting away from the tower's vertical axis.
When the portion of the building below the collapse zone disintegrated, the block would preserve its angular momentum by continuing to rotate at the same rate.
But in reality, the rotation of the block rapidly decelerated as the downward plunge began.
Did you know that the top of the South Tower disintegrated during free fall and arrived as dust on the ground?
How can this sudden stop of the rotating top and its subsequent disintegration be explained?
Did you know that concrete contains a lot of [chemically bound] water that acts as micro-explosive when it is suddenly overheated?
Steam explosion characteristics:
when water is overheated rapidly it abruptly turns into steam, e. g. when superheated plasma hits concrete
as being a micro-explosion, the smashing of micro-structures rather produces the sound of rustling and cracking thana loud bang.
Source @00:04: http://www.youtube.com/watch?v=k_64RigP1Fk
Did you know that the two different kind of dust clouds occurred during the disintegration of the tower and that they were clearly separated:
a black, central cloud of vaporized steel (of the building's core)
a white, outer cloud of pulverized material (the former outside wall)
Did you know that the formation of the "Spire" took place when the shot coming from the South Tower's basement passed by?
Did you know that yellow sparks shot out of the building just before its disintegration?
Published under 'U.S. Code Title 17 section 107: FAIR USE Act'. The views expressed in this article are those of the author only.