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Originally posted by Phage
reply to post by andre18
Except for the minor detail of the Helmholtz Resonant Cavity being necessary to create the standing waves which enable the levitation.
This is not anti-gravity any more than an airplane is. The force of the sound is overpowering the force of gravity.
Originally posted by drew hempel
the lost tape about what? The lost "video" tape of the acoustic levitation?
Oh apparently so! Good luck!
keelynet.com...
Later Dr Jarl watched how the Tibetans built a monastery halfways up to a vertical montain ridge and levitated big stones from the valley. He made detailed notes and documented the whole process by a movie-camera. The film was later confiscated by the Englishmen and classified for 50 years. This time is over. Maybe somebody can find the film in the British archives now.
reply to post by Somamech
[edit on 21-1-2010 by drew hempel]
[edit on 21-1-2010 by drew hempel]
[edit on 21-1-2010 by drew hempel]
Originally posted by Phage
reply to post by drew hempel
Yes, the bubble just "appears". When the shrimp closes its claw very rapidly a high speed jet of water is ejected. Because of the high speed of the jet, the pressure of the water is reduced to below its vapor pressure, this in turn causes the formation of the cavitation bubble. It is not sound which produces the bubble. It is not a shockwave which produces the bubble. It is the bubble which produces the shockwave.
Hydrophone measurements in conjunction with time-controlled high-speed imaging of the claw closure demonstrate that the sound is emitted at the cavitation bubble collapse and not on claw closure. A model for the bubble dynamics based on a Rayleigh-Plesset-type equation quantitatively accounts for the time dependence of the bubble radius and for the emitted sound.
www.sciencemag.org...
Sonofusion has nothing to do with acoustic levitation and is far from proven.
www.scienceagogo.com...
Originally posted by Chronogoblin
Dolphins have been using sound to track and kill their prey for years. I am not sure why it took humans so long to reproduce that effect.
Chrono
Originally posted by Phage
reply to post by andre18
Except for the minor detail of the Helmholtz Resonant Cavity being necessary to create the standing waves which enable the levitation.
This is not anti-gravity any more than an airplane is. The force of the sound is overpowering the force of gravity.
Originally posted by Gorman91
reply to post by Somamech
No, anyone can answer that. Everyone talks about how the pyramids are so perfect geometrically and so indescribably epic and awesome that humans could not have possibly have built it.
The funny thing? They're forgetting some 150 years of pyramid development before those.
I'll do a brief run down of what I learned as an architect about Egypt. The first pyramid built was by Imhotep, known as zoser's pyramid(or the pyramid at Djoser). Imho was a chill dude, but he did not make something new out of thin air. He saw Arabs building mastabas, and Pharaoh Zoser wantes something mad cool for his burial. So Imhotep first thought to build a typical lavish mastaba. Than he decided to enlarge it. No reason why. And then for no other reason, he stacked it several times... and then several times more. And wala, the first pyramid was born. Of course you may be wondering how we know this? We scaned Zoser's pyramid and dated it. Within is a mastaba, the oldest section within the youngest section, the pyramid. But amazingly, there's another pyrimid in between dated between the two:
This was the first pyramid born. It did not have the angles of the giza pyramid, and it did not have anywhere near the same grand size. After that, for 150 yeats, Egyptians developed the design, which ended in the form of the Giza pyramids.
Egyptians had plenty of failures and plenty of wins along the way. The great Pharaoh Snefru is perhaps the greatest source of laughs. The guy had a love fest with pyramids. He built many, mostly awesome ones.
One if his greatest failures, the fail-pyramid of Meidum, imploded. Yes, that's right. The architect made the angles all wrong, and they went kaboom. All of Egypt laughed at this failure, but la la la la, life goes on
one reason for this was because they were dumb at brick laying. Most early pyramids had bricks like these:
This causes epic failure with pressure systems, as the bricks find their central source of pressure at the core. And once that goes, lol, bye bye pyramid.
Anywho, Snefru took his honor with him, and made more. One pyramid actually demonstrates learning from mistakes. This is known as the slanted pyramid
Snefru was all like "ah ha! building them like my last failure causes them to implode!"
Snefru finally got it mad cool and mad right with the red pyramid, or North pyramid. This had great angles, and not so big size. Thus the iteration process was complete, and what a pyramid should look like was now known. After that there as little if any experimentation.
Egyptians used the golden ratio to accurately form the shape pf the base, used water to level her out, and built Giza with internal ramps. The bricks were parallel to the earth, rather than slanted, and thus the great pyramids were born.
So next time someone tells you aliens built the pyramids, you tell them "if so, why didn't they get ti right the first time, and why did it take over a hundred years to get it right?!"
geez aliens, more than 100 years to get an angle right and learn about gravity? Are you sure you're more advanced than us?
LOL, but anyway, back on topic, this technology could theoretically be used to never worry about land mines again. And it would be kind of cool to have an audacitic flying suit, as opposed to a jet pack.
[edit on 22-1-2010 by Gorman91]
Originally posted by Somamech
reply to post by hisshadow
You can transmit electricity via acoustic means