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www.physicsclassroom.com...
Wave interference is a phenomenon that occurs when two waves meet while traveling along the same medium. The interference of waves causes the medium to take on a shape that results from the net effect of the two individual waves upon the particles of the medium. Wave interference can be constructive or destructive in nature. Constructive interference occurs at any location along the medium where the two interfering waves have a displacement in the same direction. For example, if at a given instant in time and location along the medium, the crest of one wave meets the crest of a second wave, they will interfere in such a manner as to produce a "super-crest." Similarly, the interference of a trough and a trough interfere constructively to produce a "super-trough." Destructive interference occurs at any location along the medium where the two interfering waves have a displacement in the opposite direction. For example, the interference of a crest with a trough is an example of destructive interference. Destructive interference has the tendency to decrease the resulting amount of displacement of the medium.
Originally posted by Semicollegiate
reply to post by Varemia
The edges of the IP must be kept close to the WTC site, and that would depend on how the transmitters were arranged. The IP would only exsist where all of the transission fields overlapped. Anywhere outside of that Volume of space would be about the same.
Airplanes: from the very first to supersonic to orbital space
Radio: from morse code to satellite High Defenition TV and cell phones
Nuclear Technology
Sanatized Cities with clean water
Food Distribution to every region
Propaganda, advertizing and public education
Titanic opaque beaurocracies
Silent perpetual balistic missle submarines
Biotechnology that can make new forms of life
The rubble pile is too small to account for 1,000,000 tons of debris. The OS remains fall straight down and would presumably arrange themselves into a cone or mound.
My calculation was the tower height 1362ft - the airspace per floor 110 x 10ft = 262 ft.
That mound would be around 25 stories high at the highest point. The pictures with perspective included in them show the tower remians to be about 25ft only 2 stories. About 1 order of magnitude smaller.
Originally posted by Semicollegiate
reply to post by hooper
Collasped or demolished gravity only pulls down so ther should be a 20 storie pile of rubble
You prefer to look at the back of your eyelids?
911research.wtc7.net...
Most of The central portion of the wall's south side (bordering Liberty Street) was unsupported by intact sub-basement walls or debris, and it had moved inward more than 10 inches. This and other portions of the wall were re-habilitated as necessary. The tieback tendons were replaced throughout most of the southern half of the wall.
Originally posted by Semicollegiate
My calculation was the tower height 1362ft - the airspace per floor 110 x 10ft = 262 ft.
That mound would be around 25 stories high at the highest point. The pictures with perspective included in them show the tower remians to be about 25ft only 2 stories. About 1 order of magnitude smaller.
Originally posted by Semicollegiate
The volume of material is the same after the collapse as before the collapse. The difference is the way it is arranged. Basically whether OS or Demo the parts all moved down and only the airspace is removed.
My calcualtion is a rough order of magnitude estimate.
What is your premise about the towers? OS or Demo?
True some of the lineages of those inventions go back a few more decades than 1900 but technologically, life was basically the same for 3000 to 14000 years before that.
Originally posted by hooper
reply to post by Semicollegiate
True some of the lineages of those inventions go back a few more decades than 1900 but technologically, life was basically the same for 3000 to 14000 years before that.
Well, that's a very simplistic and very, very general understanding of history. And very misleading.
We may marvel at the pace of technological change today, but that does not mean, by quite a bit, that everything before now was the just the same old thing for 1000's of years. And it was not the same everywhere either. Case in point, I could argue that in fact, it was the 19th century that actually saw the greatest advances in technology in the west. We started that century with just horses, sail ships and dirt roads and everyone was either a farmer or a craftsman. We ended that century with trains, cars, telegraphs, telephones, steam ships, multi-story buildings, medicines, the elevator, factories, electrical power distribution, moveable bridges, and on and on and on.