North Tower Exploding

North Tower Exploding

This is a narration of a video clip of the North Tower of the World Trade Center which focuses on explosive ejections progressing in waves down the faces of the building under the canopy of falling debris. Observation is the foundation of science.

WTC7 in Freefall: No Longer Controversial

This video tracks the motion of the NW corner of Building 7 of the World Trade Center on 9/11 2001. For a period of ~2.5 seconds. This means it was falling through itself for over 100 feet with zero resistance, an impossibility in any natural scenario. This period of freefall is solid evidence that explosives had to be used to bring the building down. In the final draft for public comment (August 2008) NIST denied that WTC7 fell at freefall. In the final report in Nov 2008 they reversed themselves and admitted freefall, but denied its obvious significance.

WTC7: NIST Finally Admits Freefall (Part II)

This is not the "Part II" I had originally envisioned. That will have to wait for Part III. In following up on the erroneous measurement described by John Gross in Part I, I decided to look more carefully at the measurement and find the video frame NIST claims marks the beginning of the collapse. What I found is that there is no motion of the roofline for at least 20-30 video frames after the point identified by John Gross. In other words, the measurement is a complete fabrication with the goal of producing a "measurement" to agree with the result predicted by NIST's collapse model. This result is sufficiently significant to merit its own video.
...More to come soon in Part III.
(For more on John Gross, see  9/11: NIST engineer John Gross denies WTC molten steel (extended) )

WTC7: NIST Finally Admits Freefall (Part III)

Part III of this series fully explores the implications of NIST's admission that WTC7 entered actual freefall and critiques the foundations of their "investigation." In the end it calls for a new, independent, fully empowered, and open investigation.

Downward Acceleration of the North Tower

The roof line of WTC1 (The North Tower) begins dropping with sudden onset and accelerates uniformly downward at about 64% of the acceleration of gravity (g) until it disappears into the dust. This means it is meeting resistance equal to about 36% of its weight. The implication of this, however, is that the force it is exerting on the lower section of the building is also only 36% of its weight. This is much less than the force it would exert if it were at rest.

The acceleration data thus prove that the falling top section of the building cannot be responsible for the destruction of the lower section of the building. A complete analysis has been published in the article entitled "Destruction of the World Trade Center North Tower and Fundamental Physics" Journal of 9/11 Studies, Vol 28, Feb 2010. (Some calculus and basic physics required.)