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Originally posted by pteridine
Both will block a flash handily? If concrete was vaporized and steel was melted, the overpressure may be a bit higher than drywall can handle. Of course you did this calculation or found a reference to such drywall
Originally posted by pteridine
A neutron flux necessary to do what you claim would have cooked many of the bystanders.
Originally posted by pteridine
FYI, nitric oxide is colorless. Did you mistake it for nitrogen dioxide?
Originally posted by buddhasystem
reply to post by Insolubrious
I have many problems with this hypothesis. One is that a shockwave traveling up the structure would have been obvious and would have probably led to immediate shedding of the siding etc. Second, sending a shockwave through the bedrock would have led to a large number of old (not seismic-proof) buildings in the neighborhood, which clearly didn't happen.
Originally posted by Insolubrious
I do think there were subterranean blasts I think they were much smaller and most likely directed blast like a shape charge or similar.
I have always speculated at the possibility that the towers had a row of very low yield nuclear devices
Watch this:
Originally posted by buddhasystem
...In addition, shaped charge is designed to work against a hard surface
Originally posted by buddhasystem
Nukes are needed when you need decent yield. So again, I don't find logic in that.
Didn't struck me as anything unusual
The popping sounds are easily explained as structural failure of various elements inside the building.
Originally posted by Insolubrious
Originally posted by buddhasystem
...In addition, shaped charge is designed to work against a hard surface
You mean like steel and concrete? There was several million tons of it down at the trade center.
You do need a decent yield to reduce such a massive skyscraper into such fine powder.
Originally posted by buddhasystem
Please... They don't make nukes with a yield equivalent to a few hundred pounds of TNT (and you claim multiple such nukes).
How small can a nuclear reaction be? Through hydrodynamic experiments for triggering fusion, extremely lows yield nuclear explosions have been generated on the magnitude of "several Pounds of TNT." As noted above, in 1961 .01 kt was unveiled in 1961. In 1956, the Tamalpais with a yield of 0.072 kt was declassified.
Almost 12 weeks after the terrorist atrocity at New York's World Trade Center, there is at least one fire still burning in the rubble - it is the longest-burning structural fire in history.
Pyrocool also contains two powerful ultra-violet absorbers. These chemicals absorb the high-energy emissions from the fire, which are most able to spread the fire to other materials, and re-emit the energy at a longer, lower-energy wavelength.
In a hydronuclear test, fissile material is imploded, but a supercritical mass is not maintained for a long enough time to permit the device to deliver "full" nuclear yield. Depending upon the conditions of the test, nuclear energy releases may range from the unmeasurably small (milligrams or less) to kilograms or even metric tons of TNT equivalent yield.
.... second subcritical experiment Holog was conducted by Lawrence Livermore National Laboratory scientists on September 18, 1997...
.... The explosion was comparable to that of a large fire cracker or shotgun blast
A major concern was that terrorists could have unleashed a so-called “dirty bomb,” an explosive device containing radioactive compounds like cesium.
Within minutes of the crash, McKinney sent a radiological health inspector to check the site for any radiation sources. He reached Richard Borri, a senior scientist in the department’s office of Radiological Health, who like most people from DOH, was on his way to work when the first tower was hit.
Borri checked the World Trade Center site for signs of radiation before and after the collapse of the buildings. Radiation could have originated in industrial radiology sources, such as the installing beams of the huge office buildings, which may have contained some radioactive elements from x-rays taken, and from depleted uranium used in ballasts in aircraft wing tips (such counterweights in airplane wing tips give the most weight for least volume, says Borri). It might also be left from any medical or dental offices.
That was fortunately not the case, Borri found, using a portable liquid scintillation counter, which measures radioactivity like a Geiger counter. The high-tech portable gadget he carried, one of the few available in the United States, is far more precise than its century-old cousin, the Geiger, counter with a much more refined ability to detect any kind of radioactivity.
Although Borri didn’t turn up any problematic radioactive readings by the end of the day, his work would be supplemented by the federal Department of Energy, whose technicians remained on site and continued to sample. [Only during the last days of the Ground Zero cleanup would radioactive testers find any evidence of radioactive emissions, from a pharmacy laboratory located within one of the buildings.]
A total recall was ordered and upon the arrival of a few more Haz-Mat guys we performed quick surveys of the perimeter in two teams of four checking for radiation, nerve and blister agent, all results were negative.