Air Pressure and Algebraic Relationships NASA

Note: Explain how Airplanes exploit "slipstreams" much like Birds Exploit Eddie Currents in order to get Flown en.wikipedia.org 1.Berkeley Researchers Create an Invisibility Cloak A team led by Xiang Zhang, a principal investigator with Berkeley Labs Materials Sciences Division and director of UC Berkeleys Nano-scale Science and Engineering Center, has created a carpet cloak from nanostructured silicon that conceals the presence of objects placed under it from optical detection. 2. A team led by scientists at Duke University's Pratt School of Engineering has demonstrated the first working "invisibility cloak." The cloak deflects microwave beams so they flow around a "hidden" object inside with little distortion, making it appear almost as if nothing were there at all. 3. Contrary to earlier predictions, Duke University engineers have found that a three-dimensional sound cloak is possible, at least in theory. Such an acoustic veil would do for sound what the "invisibility cloak" previously demonstrated by the research team does for microwaves--allowing sound waves to travel seamlessly around it and emerge on the other side without distortion. "We've devised a recipe for an acoustic material that would essentially open up a hole in space and make something inside that hole disappear from sound waves," said Steven Cummer, Jeffrey N. Vinik Associate Professor of Electrical and Computer Engineering at Duke's Pratt School of Engineering. Such a cloak might hide submarines in ...
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