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Message Subject WTC 7 is still the key to the 911 fairy tale -- 911 was an inside job!
Poster Handle jj johns
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yes, we all here know this, but there are still way too many that don't even know a third building fell that day, without getting hit by a plane. that's why wtc7 is the key to opening up people's minds. cheers
 Quoting: jj johns


Architects and engineers for 911 truth are a small group of scam artist taking you 'believers" for a moneyball ride. Why don't you try to read some truth like this:
[link to www.nist.gov (secure)]
 Quoting: Anonymous Coward 77840699


or read the new report that just came out. fuck off shill. did you happen to see the .gov in the nist url? yeah, their conclusion was pancake due to heat from fire. explain the freefall. you can't fuckface
 Quoting: jj johns

11. In a video, it appears that WTC 7 is descending in free fall, something that would not occur in the structural collapse that you describe. How can NIST ignore basic laws of physics?

In the draft WTC 7 report (released Aug. 21, 2008; available at [link to www.nist.gov] NIST stated that the north face of the building descended 18 stories (the portion of the collapse visible in the video) in 5.4 seconds, based on video analysis of the building collapse. This time period is 40 percent longer than the 3.9 seconds this process would have taken if the north face of the building had descended solely under free fall conditions. During the public comment period on the draft report, NIST was asked to confirm this time difference and define the reasons for it in greater detail.

To further clarify the descent of the north face, NIST recorded the downward displacement of a point near the center of the roofline from first movement until the north face was no longer visible in the video. Numerical analyses were conducted to calculate the velocity and acceleration of the roofline point from the time-dependent displacement data. The instant at which vertical motion of the roofline first occurred was determined by tracking the numerical value of the brightness of a pixel (a single element in the video image) at the roofline. This pixel became brighter as the roofline began to descend because the color of the pixel started to change from that of the building façade to the lighter color of the sky.

The approach taken by NIST is summarized in NIST NCSTAR Report 1A, Section 3.6, and detailed in NIST NCSTAR Report 1-9, Section 12.5.3.

The analyses of the video (both the estimation of the instant the roofline began to descend and the calculated velocity and acceleration of a point on the roofline) revealed three distinct stages characterizing the 5.4 seconds of collapse:

Stage 1 (0 to 1.75 seconds): acceleration less than that of gravity (i.e., slower than free fall).
Stage 2 (1.75 to 4.0 seconds): gravitational acceleration (free fall)
Stage 3 (4.0 to 5.4 seconds): decreased acceleration, again less than that of gravity
This analysis showed that the 40 percent longer descent time—compared to the 3.9 second free fall time—was due primarily to Stage 1, which corresponded to the buckling of the exterior columns in the lower stories of the north face. During Stage 2, the north face descended essentially in free fall, indicating negligible support from the structure below. This is consistent with the structural analysis model, which showed the exterior columns buckling and losing their capacity to support the loads from the structure above. In Stage 3, the acceleration decreased as the upper portion of the north face encountered increased resistance from the collapsed structure and the debris pile below.
 Quoting: Anonymous Coward 77840699


why do you even bother? did nist explain the magic passport that fell out of the sky? did they explain how people with barely any experience in a cesna pulled off maneuvers with a passenger jet that air force pilots said were close to impossible? i could go on and on. it's obvious that you're a shill. you're not with the 3.50
 
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