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... A truther gave up?
As I have tried to make you understand we are talking about a single point, actually a single pixel on the roof line....
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
FAQs - NIST WTC 7 Investigation
As I have tried to make you understand we are talking about a single point, actually a single pixel on the roof line....
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
FAQs - NIST WTC 7 Investigation
not so ollie
nist said it freefell and corrected their official report to reflect it as well.
As I have tried to make you understand we are talking about a single point, actually a single pixel on the roof line....
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
FAQs - NIST WTC 7 Investigation
not so ollie
nist said it freefell and corrected their official report to reflect it as well.
Ah Kookoo, please read the official report i posted again. Yes They said that a single pixel fell at freefall for 2.25 seconds.
And capy says that is an impossibility.
So you guys get your stories straight.....
Now what is it in the NIST report you want to correct again?
I don't have to know. They have experts for that. They explained quite well how they measured a single pixel of the roofline in the videos as it moved.....
Would you like to talk about installing a tactical communication system that would cover the state of New york in less than 4 hours? That I could be called an expert at....
It's not that we don't have facts, it's just that you don't want them to be true.
Another relevant video (keep your eyes on the center of that roofline now)...
Clocking WTC7 - YouTube
By the way I haven't seen any experts on here to debate with....
By the way I haven't seen any experts on here to debate with....
Wait, I have KaKa on ignore. Is he calling himself an expert now?
WOW you can see the floors crashing behind the facade exactly as i said they did....Thank you...
By the way I haven't seen any experts on here to debate with....
By the way I haven't seen any experts on here to debate with....
Wait, I have KaKa on ignore. Is he calling himself an expert now?
Um koo koo....There is no recording or seismograph of any explosions at the time of collapse...
How did they make them silent?
Don't need an expert to ask that question.....Just have to check the facts....
Um koo koo....There is no recording or seismograph of any explosions at the time of collapse...
How did they make them silent?
Don't need an expert to ask that question.....Just have to check the facts....
actualy there are several recordings of initial explosions, you are a victim of debunker propaganda.
thermite cutters have very little noise since they operate like a cutting torch od'd on steroids.
They are nothing new NIST knew about them, no secret.
Um koo koo....There is no recording or seismograph of any explosions at the time of collapse...
How did they make them silent?
Don't need an expert to ask that question.....Just have to check the facts....
actualy there are several recordings of initial explosions, you are a victim of debunker propaganda.
thermite cutters have very little noise since they operate like a cutting torch od'd on steroids.
They are nothing new NIST knew about them, no secret.
Thermite cutters also leave behind evidence.
Show it to me...
Though you did first claim explosives...
Can you go to one story and stick with it?
Milliseconds to cut through steel beams? Really? You must really know more than most experts do...
Tell me, how did they prevent any of these from going off early with all those uncontrolled fires going for over 7 hours?
