White-Hot Evidence of Demolition
An unusual flame is visible within this fire. In the upper photograph in Figure 9-44 a very bright WHITE flame, as opposed to the typical yellow or orange surrounding flames, which is generating a plume of white smoke, stands out. The intensity of this flame is considerably brighter than normal flames.(p. 48).
Color is the result of temperature:
|Metal Temperature by Color||Color Scale of Temperature|
|faint red||930||500||770||incipient red heat||500 - 550||770 - 820|
|blood red||1075||580||855||dark red heat||650 - 750||920 - 1020|
|dark cherry||1175||635||910||bright red heat||850 - 950||1120 - 1220|
|medium cherry||1275||0690||0965||yellowish red heat||1050 - 1150||1320 - 1420|
|cherry||1375||0745||1020||incipient white heat||1250 - 1350||1520 - 1620|
|bright cherry||1450||0790||1060||white heat||1450 - 1550||1720 - 1820|
["This table is the result of an effort to interpret in terms of thermometric readings, the common expressions used in describing temperatures. It is obvious that these values are only approximations."]
Sources: Process Associates of America
|&||Handbook of Chemistry & Physics, 1924|
The "very bright white flame" observed by NIST, under the most generous possible interpretation, was really "light yellow" on the chart on the left or "incipient white" in the chart on the right.
See also this chart:
Were the fires in the Twin Towers that hot?
Well, NIST itself says that paint tests indicated low steel temps -- 480 Fahrenheit -- "despite pre-collapse exposure to fire". NIST also said that microstructure tests showed no steel reached critical (half-strength) values of 600 Celsius (1112 degrees Fahrenheit) for any significant time.
And Thomas Eager, a Professor of Materials Engineering and Engineering Systems at MIT and a defender of the official story, concluded that the temperatures in the Twin Towers never exceeded 800 Celsius (1472 degrees Fahrenheit). Additional evidence that the fires were not that hot is here.did not get up to 1975 degrees Fahrenheit, and the WTC fires were not hot enough to produce a observed white-to-bright-yellow flame without the use of explosives.
Here's a celsius-fahrenheit calculator to help you with conversions.