21. Boomerangs!--National Geographic Kids National Geographic s article with 2 videos of boomerang throwing. http://www.nationalgeographic.com/ngkids/0008/boomerang/index.html

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22. Hubble Heritage Hubble Catches Scattered Light From the boomerang Nebula. The Hubble Space Telescope has caught the boomerang Nebula in these new images taken with the http://heritage.stsci.edu/2005/25/caption.html

Hubble Catches Scattered Light From the Boomerang Nebula Astronomers are uncertain of the cause of bipolar outflow in this, and many other, young nebulae like the Boomerang. It may be that a disk of slow-moving material is situated around the equator of the star, thereby blocking more rapidly moving ejected material there, and allowing only matter closer to the poles to be ejected. Another consideration may be that magnetic fields are responsible for constraining the material and thus causing the double-lobed shape of the nebula. Bipolar outflows are seen to occur both from very young stars ("protostars") that are still in the process of collapsing and forming, and from old stars nearing the ends of their lives that have become bloated red giants. The Boomerang is believed to be the ejected outer layers from an old red giant. Each lobe of the Boomerang Nebula is nearly one light-year in length, making the total length of the nebula half as long as the distance from our Sun to our nearest neighbors- the Alpha Centauri stellar system, located roughly 4 light-years away.

23. Aerodynamics In Sports Equipment, Recreation And Machines - Boomerang - Instruct An article describing why a boomerang returns, based on the aerodynamics, the shape and the throwing technique. http://wings.avkids.com/Book/Sports/instructor/boomerang-01.html

The Boomerang page 1 Introduction Most of us are familiar with the boomerang, the wonderful stick that returns when you throw it. However, most of us don't know the history of the boomerang or the complex physics and aerodynamics involved. To understand why a boomerang returns, we must look at the shape of the boomerang, the aerodynamics and physics. Finally, the correct throwing technique will be discussed. History The boomerang is often times thought of as a weapon. However, the boomerang has always been primarily a recreational toy. The real weapon used by the Aborigines was the killer-stick. The killer-stick shares many properties with the boomerang except one. The killer-stick does not return! The killer-stick was simply a stick honed to have a cross-section similar to a modern day airfoil. This stick actually flew through the air at high speeds. It was given a rotation at launch for stability much like the discus and frisbee of today. The killer-stick could be thrown very far and with great accuracy.

24. Boomerang Shack Australian boomerang shack presents returning boomerangs, aboriginal art boomerangs, corporate boomerangs, didgeridoo and aboriginal art articles. http://www.boomerangshack.com/

Boomerang Shack Australian Boomerang Shack presents Returning boomerangs, Aboriginal art boomerangs, Corporate boomerangs, Didgeridoo and Aboriginal art articles ... boomerang arrived today in excellent condition and I am happy.... Bob ... You have a great company and I surely will spread the word. Hopefully I will find something else to buy. Well thank you again .... Randy ... I'm a little late in sending this, but wanted to thank you for your great service and wonderful boomerangs... Jennifer Bookmark it: I Boomerangs Returning boomerangs Catalogue Order page Aboriginal art boomerangs ... Corporate boomerangs New Products!!! Personalized boomerangs Aboriginal Art with engraved plate Competition boomerangs High quality returning Indoor soft boomerangs Didgeridoo Home F.A.Q. ... Contact us Last update Oct 2005

25. Geography Transportation Trade Education Curriculum Boomerang Box APL The boomerang Box is taking a breather. During this break, feel free to take a virtual journey by using our project archives. http://www.apl.com/boomerangbox/

The Boomerang Box is taking a breather. During this break, feel free to take a 'virtual' journey by using our project archives . And stay tuned for more adventures boomerangs always return! imgTag='Updated on May 26, 2003 and

26. Pet Tags, Dog Tags, Pet Id Tags, Dog Id Tags, Pet Identification Tags, Cat Id Ta pet tags, dog tags, pet id tags, dog id tags, pet identification tags, dog identification tags, id tags, pet name tags, dog name tags, pet id, cat id tags, http://www.boomerangtags.com/

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27. Science Of Boomerangs - How To Throw - How To Make - Different Types - Popular M There s plenty of materials science going into the handcrafting of a perfect boomerang. But as inventor Eric Darnell explains, it also requires a touch of http://www.popularmechanics.com/science/extreme_machines/4219929.html

CONTACT US SUBSCRIBE ADVERTISE MARKETPLACE ... How-To Central Full Text Keyword menuStart('primaryNav'); Robotics Extreme Machines Research Worst-Case Scenarios ... Science Throwing a boomerang is part science, part magic — and, as Eric Darnell knows, so is making one. Click here for eight easy steps to chuck a 'rang like a pro!) Eric Darnell throws his latest creation, the Scimitar—a foam boomerang with LED lights. By Dan Drollette Photographs by Michael Murphree Published in the August 2007 issue. Page Email Print del.icio.us Reddit Digg it View blog authority ALSO SEE... Next-Gen Inventions, CIA Gadget Building, Baseball Science and More: Podcast 9 Questions for Baseball Physicist Robert Adair Are Lost's New Time-Travel Physics Junk Science? Maybe Not, Expert Says: Hollywood Sci-Fi vs. Realit The Signal’s Fallacy of Frequencies: Hollywood Sci-Fi vs. Reality ... Section Archive KEYWORDS boomerang engineering physics At the preseason tryouts for the U.S. Boomerang Team in Greenfield, Mass., one figure stands out among the hacky sack players and pizza delivery guys gathering in the soccer fields, limbering up their throwing arms. Eric Darnell, a soft-spoken 62-year-old Quaker and backyard inventor from South Stafford, Vt., has brought 60 of his latest handmade boomerang prototypes, along with several notebooks, two windsocks and printouts of weather forecasts. While others just hurl their rangs — as aficionados call them — Darnell tries to be as meticulous and scientific as possible about the objects he refers to as “my kinetic sculptures.”

28. Boomerangs Colorado The boomerangman has been giving fast, personal service SINCE 1975. Colorado boomerangs, Eric Darnell boomerangs, Turning Point boomerangs, http://www.theboomerangman.com/

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29. Gel Boomerangs Gel boomerangs is the place to go to have FUN with boomerangs, How to Throw boomerangs, How to Catch boomerangs, Play Games with Your Friends With http://www.gel-boomerang.com/

Boomerang Information Site Find Out How To: Throw Boomerangs Catch Boomerangs Make Boomerangs Play Games With Boomerangs Have FUN With Boomerangs About Gel Boomerangs Articles by Gel How to Throw Boomerangs How to Deal With Flight Problems ... Favorite Sites Buy Gel Boomerangs from Colorado Boomerangs Boomerang Questions? E-mail Mike Gel at: gelboom@gel-boomerang.com New Article on Tuning Tips About Gel Boomerangs Articles by Gel How to Throw Boomerangs ... Gel Boomerangs Last updated May 1, 2003

30. BOOMERANGS.COM - Boomerangs, RC Airplanes, RC Boats, Flying Toys And Boomerang A boomerangs.com supplies boomerangs, Flying Toys, RC Airplanes, RC cars, RC Tanks and RC Boats. Information on Australian Wooden boomerangs, Sport boomerangs http://www.boomerangs.com/

home boomerangs rc boats rc airplanes ... view cart We are stocking US distributors for Wallaby Boomerangs Turning Point Boomerangs Aboriginal Steve's Colorado Boomerangs ... Spinback Boomerangs and Rangs Boomerangs, LLC . Order an australian sport boomerang or a hand made wooden aboriginal boomerang ! Or select a hand crafted wooden boomerang from boomerang artists in Germany, Canada, Australia or the USA. featured items Delicate Arch Special Edition Wooden Boomerangs You better have a big boom if you want to top this boomerang. Incredible flyer with a great paint job. Special weighted tips to provide extra distance! Throw it and wait 20 seconds for it to return! One of our all time favorite boomerangs (Looks great hanging on a wall also - one of our biggest rangs). 65 yard elliptical flight. wind: light-heavy. Please note that colors may vary. Click here to watch the Delicate Arch Special Edition Boomerang in action! BOOM-DECLICATEARCHSE Orientation: Right-Handed Left-Handed Kilimanjaro Wooden Boomerangs The huge lumbering flight will blow your mind! Nobody thinks it will make it back, but it always does. Get tons of attention at the park... get a Kilimanjaro! Weighted tips for extra distance. Makes a special gift for someone at least 150 lbs in weight (This is a big boom!). It is clearly one of the best boomerangs in our stock. 60 yard elliptical flight. wind: light-medium. Please note that colors may vary. BOOM-KILIMANJARO Orientation: Right-Handed Left-Handed Delicate Arch Wooden Boomerangs The "original" super popular Delicate Arch is shaped after the geologic formation in the Utah desert. This is a BIG boom and it looks very cool as well. The flight and finish are unrivaled. Both tips weighted. 55 yard elliptical flight. wind: light-heavy. Please note that colors may vary.

31. The Boomerang Theatre Company Nonprofit theatre company in New York City, producing free Shakespeare, new plays, and plays in rotating repertory. http://www.boomerangtheatre.org/

Welcome to the Boomerang Theatre Company showMenus(1,'Vertical') Boomerang on MySpace Please check out our friends at Rooftop Films United Stages The Boomerang Theatre Company closed the 2007 season on September 30th, 2007. Thank you to all who attended or supported our work this year The Boomerang Theatre Company is proud to be part of the historic theatrical project: 365 Days/Plays by Suzan-Lori Parks All's Well that Ends Well by William Shakespeare Central Park Rotating Repertory at CenterStage/NY Sept 6th-30th, 2007 Dangerous Corner by J.B. Priestley World Premiere The Heart Has a Mind of Its Own by Larry Kirwan NYC Premiere Stoppard Goes Electric 3 Short Plays by Tom Stoppard email: info@boomerangtheatre.org var sc_project=1282714; var sc_invisible=1; var sc_partition=11; var sc_security="e421bc04";

32. Boomerang Fun Explains aerodynamics, types, games, history, and related links. http://www.boomerangfun.com/

Boomerang Fun Types Games History Links THE AERODYNAMICS OF BOOMERANG The boomerang is a scientific marvel as it envisions the aerodynamic as well as aviation principles coupled with many theorems of Physics. It is all the more striking, nay, bewildering that these principles of aviation and theorems of physics were unerringly utilized thousands of years before they were even invented. How does a boomerang float in the air? The same aviation principle. The wing of an airplane is designed in such a way that at the topside the wind speed is much more greater than at the bottom side. The result? Because of the very high velocity of wind at the topside of the wing, the pressure is small and at the same time since the velocity of wind at the bottom side of the wing is much, much less, the pressure is great. This pressure pushes the wing up. In the case of boomerang it is also acting on the same principle – The Bernoulli’s principle for the simple reason that its design too is in the form of a horizontal half – tear drop! How does a boomerang return to the thrower?

33. Boomerang Productions - The Official #1 Latin & International Entertainment Comp Also you can join to our Text Messages List and get more information and promotions from boomerang Productions. We are at MYSPACE http://www.boomerangproductions.net/

34. [astro-ph/0104460] A Measurement By BOOMERANG Of Multiple Peaks In The Angular P A measurement by boomerang of multiple peaks in the angular power spectrum of the cosmic microwave background. Authors C.B. Netterfield, P.A.R. Ade, http://arxiv.org/abs/astro-ph/0104460

arXiv.org astro-ph Search or Article-id Help Advanced search All papers Titles Authors Abstracts Full text Help pages Full-text links: Download: PostScript PDF Other formats Citations SLAC-SPIRES HEP (refers to , cited by , arXiv reformatted) NASA ADS CiteBase astro-ph new recent Astrophysics Title: A measurement by BOOMERANG of multiple peaks in the angular power spectrum of the cosmic microwave background Authors: C.B. Netterfield P.A.R. Ade J.J. Bock J.R. Bond ... F. Scaramuzzi (Submitted on 30 Apr 2001 ( ), last revised 25 Feb 2002 (this version, v3)) Abstract: This paper presents a measurement of the angular power spectrum of the Cosmic Microwave Background from l=75 to l=1025 (~10' to 5 degrees) from a combined analysis of four 150 GHz channels in the BOOMERANG experiment. The spectrum contains multiple peaks and minima, as predicted by standard adiabatic-inflationary models in which the primordial plasma undergoes acoustic oscillations. These results significantly constrain the values of Omega_tot, Omega_b h^2, Omega_c h^2 and n_s. Comments: changes to reflect version accepted by ApJ Subjects: Astrophysics (astro-ph) Journal reference: Astrophys.J. 571 (2002) 604-614

35. Boomerang - From An Inventors Perspective Several indigenous cultures developed hunting tools which look like boomerangs find out the real history. http://inventors.about.com/library/inventors/blboomerang.htm

zJs=10 zJs=11 zJs=12 zJs=13 zc(5,'jsc',zJs,9999999,'') You are here: About Inventors Famous Inventions Invention History Databases ... B Start Inventions Boomerang - From an Inventors Perspective Inventors Inventors Essentials Turn Ideas Into Money ... Help Boomerang Several indigenous cultures developed hunting and weapon tools which look like boomerangs. Called hunting sticks or kylies, they were heavier and bigger than boomerangs and not as flexible. They have been found in ancient Egypt, Eastern Europe and Australia. However, the curved throwing sticks were mainly used by the aborigines of Australia for hunting and warfare. Boomerangs as we know them today, were invented for sport, the returning boomerang. The name boomerang comes from the Turuwal tribe of New South Wales. Boomerang Complete instructions to use your own boomerang. How to throw a boomerang Types of boomerangs How boomerangs are made Why do they come back? Boomerang Types There are two types of boomerang, returning and non-returning. The returning boomerang was invented by Australian Aborigines thousands of years ago. Boomerangs have been found and carbon dating has proven that they are over 10,000 years old. What is a Boomerang?

36. :: Boomerang Software Inc. :: Welcome to the corporate solutions and services of boomerang Software. We provide the best security tools and services for individuals, small, medium, http://www.boomerangsoftware.com/

CORPORATE PRODUCTS CONSUMER PRODUCTS TECHNICAL SUPPORT WEB HOSTING ... Web Shop Platinum Plus Search Products Corporate Products Consumer Products Service ... Contact Us Welcome to the corporate solutions and services of Boomerang Software. We provide the best security tools and services for individuals, small, medium, and large businesses. Check out the new eXtendia family of Security tools eXtendia Security Suite including the new AntiVirus, PC Firewall, PC Cleaner, Pop Up Ad Blocker and more. MORE ABOUT COMPANY Web Shop Platinum Plus Guardian Security Suite MegaPack Web Page Designer Gold Plus ... MORE ABOUT PRODUCTS

37. BBN Technologies :: Products And Services :: Boomerang The boomerang shooter detection system pinpoints incoming small arms fire from the shooter. boomerang is available to U.S. military, lawenforcement http://www.bbn.com/products_and_services/boomerang/

BBN Technologies Boomerang About BBN Products Technology Services Successes ... Contact You are here: BBN Products and Services Boomerang Products and Services Boomerang EveryZing Boomerang BBN's History of Value Creation Licensing ... Quick Contact Form Boomerang State-of-the-Art Shooter Detection The Boomerang shooter detection system pinpoints incoming small arms fire from the shooter. Boomerang is available to U.S. military, law-enforcement agencies, municipalities, and to other approved U.S. domestic and foreign entities. Government contractors can incorporate Boomerang into their systems or platforms. Combat Proven and Award Winning Boomerang is currently employed by U.S. forces in Iraq and Afghanistan. And in 2005 Boomerang won both the DARPA "Significant Technical Achievement Award" and an MITX award. Quiet, Passive Operation Boomerang uses passive acoustic detection and computer-based signal processing to locate the shooter. When mounted on a vehicle, the system operates when the vehicle is stationary or moving. Boomerang uses a single mast-mounted, compact array of microphones to detect incoming fire. Best Performance and Best Value Boomerang performs best and costs less than competitors. And Boomerang is the only shooter detector shown to operate successfully in urban terrain (

38. Boomerangs For Beginners, Throwing Boomerangs, Boomerang Reviews boomerangs and boomerang information for beginners. Throwing boomerangs, Sport boomerangs. http://boomeranginfo.com/

How To Throw and Make Australian Sport Boomerangs Boomerangs Boomerangs are unique, fascinating objects that are so simple to use that anyone who can throw a ball, can throw boomerangs. However, to have a true understanding of how boomerangs fly and the many aerodynamics forces that give boomerangs their unique returning ability is a fascinating subject that dedicated Rang'ers (people who throw boomerangs) can take years to master. Boomerangs come in many shapes and sizes, and every boomerang has it's own unique flight. Once you understand the basics of how boomerangs fly, you can easily make your own with a few simple tools and basic plywood. Boomerangs can be enjoyed on your own, just you, your boomerangs and the wind working in harmony. If you enjoy competing with others, boomerang competitions give you the thrill of testing your skills against your friends. There are many different fun and challenging boomerang events that you can compete along side, or head to head with your fellow Rang'ers Finally, making boomerangs can also be classified as a work of Art. Many are beautifully constructed, carved and decorated, but still remain a genuine, returning, sport boomerang.

39. NASA Glenn Learning Technologies Project (LTP) Plans for making and flying small boomerangs made from file card paper. http://www.grc.nasa.gov/WWW/K-12/TRC/Aeronautics/FINGER_BOOMERANGS.html

Aeronautics Home BGA BGP BGMR ... Bottle Rocket Sim Finger Boomerangs SUBJECT: Aeronautics TOPIC: Boomerang DESCRIPTION: Plans for making and flying small boomerangs made from file card paper CONTRIBUTED BY: Gregory Vogt, OSU EDITED BY: Roger Storm, NASA Glenn Research Center MATERIALS: File card Scissors Pencil Pattern PROCEDURE: Cut out the patterns of the boomerangs and trace them onto a file card. Cut out the boomerangs from the file cards. SOME SAMPLE SHAPES ARE SHOWN HERE. FLYING THE FINGER BOOMERANGS: Lay the boomerang on the edge of a book and tilt the book slightly upward. The book will serve as a launching platform. Using one of your index fingers, strike the boomerang so that it spins rapidly as it shoots rapidly off the book. The boomerang should fly straight out, turn, and come back. If necessary, give the boomerang a bit of additional lift by bending the leading edge tips of each wing slightly upward like a forward facing flap. DISCUSSION: Refer to the Four-Wing Bomerang Activity for more information about boomerangs.

40. Boomerang This lesson plan uses the boomerang to demonstrate basic mathematical principles. http://www.iit.edu/~smile/ma96m5.html

Boomerang Wilhelm L. Lilly Kenwood Academy High School 1629 E. Hyde Park Blvd. 5015 S. Blackstone Ave. Chicago IL 60615 Chicago IL 60615 (312) 535-1409 Objectives : This lesson can be effectively used with grades 4-12. Estimation of angles in degrees. Estimation of distances in feet or meters. Data collection and histogram analysis. (optional) Study gyroscopic precession and aerodynamics. Materials Needed Two 12-inch rulers (shatter-resistant) per group/student. Rubber bands and/or strong tape. Protractor per group/student. TI-81/82 per group. Data collection sheet per group. Two skewers or sticks with marker flags per group. One yard or meter stick per group. Recommended Strategy Return to Mathematics Index

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