Thermal Images of the North and South towers in 9-11

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Thermal Images of the North and South towers in 9-11
Topic Started: Nov 4 2009, 02:51 PM (63 Views)
Quantumflux432	Nov 4 2009, 02:51 PM Post #1
Posts: 13 Group: Members Member #304 Joined: Oct 23, 2009	http://wtc.nist.gov/NCSTAR1/PDF/NCSTAR%201-5A%20Ch%201-8.pdf Page 236 "On the morning of September 11, 2001, a specialist in the use of infrared thermography for assessing the operation of building systems was performing an inspection in a building near the WTC site" Is this coincidence? "Shortly after the first aircraft struck WTC 1, the operator went outside and trained the infrared camera on WTC 1 and took two images of the burning tower. The operator also videotaped the tower using a standard video camera, witch allows the thermal images to be compared with standard video images taken from the same location. ......"Prior to the aircraft impact it was being used to monitor objects near room temperature and had been adjusted to saturate at a maximum surface temperatures of 120 C. The temperature range was not adjusted before taking the WTC images." The naxt page shows the image. At page 258 and 260 are more pictures. http://wtc.nist.gov/NCSTAR1/PDF/NCSTAR%201-5A%20Chap%209_Appx%20C.pdf On page 24 shows images from the South Tower



achimspok	Nov 4 2009, 05:58 PM Post #2
Posts: 297 Group: Members Member #266 Joined: Aug 2, 2009	Looks like a little NIST lie. If the camera was calibrated for a temperature range up to 120°C then we may expect that all hotter areas would show bright white. This is not the case but NIST talks about "strongly saturated". Maximum saturation = 120°C = white. The shown picture isn't strongly saturated and it shows all colors of the scale down to the air temperature. It was shot close to the tower. So if there were no flames shooting out off the windows in the same moment then we see just the actual temperature of the aluminum facade and/or steel. And btw NIST wrote in a different context that they didn't found any piece of steel that was exposed to higher temperatures than 250°C. Imo the IR picture shows what it should show and the saturation did not reach the upper border. The other pictures in the report are enhanced. I expect the former gray for lower temperatures is now white. So these pictures show just warm areas without any relation to the temperatures. Edited by achimspok, Nov 4 2009, 06:08 PM.



Quantumflux432	Nov 4 2009, 10:54 PM Post #3
Posts: 13 Group: Members Member #304 Joined: Oct 23, 2009	How do you post from PDF? I had to type all that.



achimspok	Nov 5 2009, 12:32 AM Post #4
Posts: 297 Group: Members Member #266 Joined: Aug 2, 2009	I used a small screen capture tool. Google for "screen capture freeware".



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