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Originally posted by VintageEnvy
Fine, for your heat problem:
Why Did the World Trade Center Collapse? Science, Engineering, and Speculation
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Originally posted by VintageEnvy
reply to post by Valhall
Shucks ya got me. The article isnt wrong, you want it to be wrong. And it was countered by a similar article written from your sides perspective, they never can null and void one another. If your sides charlie sheen came up against our sides charlie sheen we would still side with OUR charlie sheen, its null and voided each other.
Originally posted by VintageEnvy
reply to post by bsbray11
The wire comment was just an example, not literal. Im sure there is technology that could trip something in that to brng them down from the moon but we were attacked. Do I think they knew we were going to be attacked, yes. But, I think they believed it wouldnt happen, nor did they know exactly where or when.
Originally posted by OmegaPoint
Question One (to debunkers):
First of all, given all the talk about the HEAT from the fires at the area of plane impact causing the all the steel to weaken and bend precipitating a sequential and successive global "collapse" of the buildings, into a smoldering pile of rubble, which burned at excessively high temperatures for days, weeks, even months - my first question for all 9/11 debunkers who read this board, is:
How do you explain the EXCESSIVE HEAT recorded, such that micro-spheres of iron were found in plentiful supply in dust samples from the destruction, a destruction which also completely pulverized the entire building, uncluding just about every cubic meter of concrete used in its construction - how do you explain what amounts to the atomization (spraying) of steel, or the presence, in other words of molten steel, absent the kind of termperatures which would be present if various explosives and firing elements such a thermite or nano-thermite, and how do you explain the presence of extremely hot metals in the pit of destruction?
Extremely high temperatures during the World Trade Center destruction
Originally posted by VintageEnvy
Fine, for your heat problem:
The fire is the most misunderstood part of the WTC collapse. Even today, the media report (and many scientists believe) that the steel melted. It is argued that the jet fuel burns very hot, especially with so much fuel present. This is not true.
Part of the problem is that people (including engineers) often confuse temperature and heat. While they are related, they are not the same. Thermodynamically, the heat contained in a material is related to the temperature through the heat capacity and the density (or mass). Temperature is defined as an intensive property, meaning that it does not vary with the quantity of material, while the heat is an extensive property, which does vary with the amount of material. One way to distinguish the two is to note that if a second log is added to the fireplace, the temperature does not double; it stays roughly the same, but the size of the fire or the length of time the fire burns, or a combination of the two, doubles. Thus, the fact that there were 90,000 L of jet fuel on a few floors of the WTC does not mean that this was an unusually hot fire. The temperature of the fire at the WTC was not unusual, and it was most definitely not capable of melting steel.
continued......
But it is very difficult to reach this maximum temperature with a diffuse flame. There is nothing to ensure that the fuel and air in a diffuse flame are mixed in the best ratio. Typically, diffuse flames are fuel rich, meaning that the excess fuel molecules, which are unburned, must also be heated. It is known that most diffuse fires are fuel rich because blowing on a campfire or using a blacksmith’s bellows increases the rate of combustion by adding more oxygen. This fuel-rich diffuse flame can drop the temperature by up to a factor of two again. This is why the temperatures in a residential fire are usually in the 500°C to 650°C range.2,3 It is known that the WTC fire was a fuel-rich, diffuse flame as evidenced by the copious black smoke. Soot is generated by incompletely burned fuel; hence, the WTC fire was fuel rich—hardly surprising with 90,000 L of jet fuel available. Factors such as flame volume and quantity of soot decrease the radiative heat loss in the fire, moving the temperature closer to the maximum of 1,000°C. However, it is highly unlikely that the steel at the WTC experienced temperatures above the 750–800°C range. All reports that the steel melted at 1,500°C are using imprecise terminology at best.
Some reports suggest that the aluminum from the aircraft ignited, creating very high temperatures. While it is possible to ignite aluminum under special conditions, such conditions are not commonly attained in a hydrocarbon-based diffuse flame. In addition, the flame would be white hot, like a giant sparkler. There was no evidence of such aluminum ignition, which would have been visible even through the dense soot.
Originally posted by OmegaPoint
Each level of the structure was designed to uphold everything above it, and more, for the lifetime of the building.
Once initiated, the destruction resulted in a pulverized ejection of building material which formed a cascading fountain of debris, so once part way down, there was nothing "falling" on the remaining structure. Half way through the progression of destruction, there was about half less building above the remaining half, yet the pulverization continued, unabated, without any appreciable loss of momentum, all the way to the ground.
I think that those who defend the official story, are insane.
Originally posted by GoodOlDave
Personally, I go by the very well written document by MIT materials engineer Thomas Eagar, who gives visuals and easy to understand explanations that support his statements-
MIT materials engineering report
I have yet to encounter one conspiracy theorist who can even come close to refuting any of this material. THAT pretty much says it all.
Originally posted by GoodOlDave
Personally, I go by the very well written document by MIT materials engineer Thomas Eagar, who gives visuals and easy to understand explanations that support his statements-
MIT materials engineering report
I have yet to encounter one conspiracy theorist who can even come close to refuting any of this material. THAT pretty much says it all.
Originally posted by OmegaPoint
reply to post by Orion7911
Please, try to keep this one thread civil, for the sake of the reader who simply wants to know and understand what the truth is about this important issue. Thanks.