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Originally posted by detachedindividual
reply to post by CaptainAmerica2012
There is a delay though.
Although "the speed of sound" is commonly used to refer specifically to the speed of sound waves in air, the speed of sound can be measured in virtually any substance. Sound travels faster in liquids and non-porous solids than it does in air, traveling about 4.4 times faster in water than in air.
Additionally, in solids, there occurs the possibility of two different types of sound waves: one type is associated with compression (the same as usual sound waves in fluids) and the other is associated with shear stresses, which cannot occur in fluids. These two types of waves have different speeds, and (for example in an earthquake) may thus be initiated at the same time but arrive at distant points at appreciably different times. The speed of compression-type waves in all media is set by the medium's compressibility and density, and the speed of shear waves in solids is set by the material's rigidity and density.
Here is the Naudet film of the 1st plane, there is an obvious audio anomaly right beofre the plane crashed. Was this video or audio edited to conceal the ground explosion?.
Sounds all most like a fast propellar plane ??
Originally posted by _BoneZ_
...it looks like the plane is in such a steep climb that you can't help to think it will stall. Would like to have seen how he got out of that climb.
Originally posted by weedwhacker
No stall, because he had a lot of excess airspeed.
There is an interview, shortly after the North Tower impact, in which a woman named Jeanne Yurman refers to hearing a "sonic boom" in her apartment in Battery Park City followed by momentary loss of her TV signal. She gets up and goes to the window only to see an explosion as the side of the North Tower blows out.
It seems probable that the "sonic boom" she heard and felt was in fact the first explosion referred to by Willie Rodriguez in the sub-basement of the tower.
Originally posted by ipsedixit
reply to post by CaptainAmerica2012
You might be interested in this thread:
"First North Tower Explosion Confirmed On CNN?"
www.abovetopsecret.com...
There is an interview, shortly after the North Tower impact, in which a woman named Jeanne Yurman refers to hearing a "sonic boom" in her apartment in Battery Park City followed by momentary loss of her TV signal. She gets up and goes to the window only to see an explosion as the side of the North Tower blows out.
It seems probable that the "sonic boom" she heard and felt was in fact the first explosion referred to by Willie Rodriguez in the sub-basement of the tower.
There is some other discussion of the audio on different tapes of the event.