1. Sonoluminescence - Wikipedia, The Free Encyclopedia sonoluminescence is the emission of short bursts of light from imploding bubbles in a liquid when excited by sound. http://en.wikipedia.org/wiki/Sonoluminescence

Sonoluminescence From Wikipedia, the free encyclopedia Jump to: navigation search This article's citation style may be unclear . The references used may be made clearer with a different or consistent style of citation footnoting , or external linking (December 2008) Long exposure image of multi-bubble sonoluminescence created by a high-intensity ultrasonic horn immersed in a beaker of liquid Another long exposure image of sonoluminescence in a beaker of water. Each bright blue dot is an individual bubble that is emitting light.(visible at 100% zoom) Sonoluminescence is the emission of short bursts of light from imploding bubbles in a liquid when excited by sound Contents History Properties Rayleigh–Plesset equation Mechanism of phenomenon ... edit History The effect was first discovered at the University of Cologne in 1934 as a result of work on sonar H. Frenzel and H. Schultes put an ultrasound transducer in a tank of photographic developer fluid . They hoped to speed up the development process. Instead, they noticed tiny dots on the film after developing and realized that the bubbles in the fluid were emitting light with the ultrasound turned on. It was too difficult to analyze the effect in early experiments because of the complex environment of a large number of short-lived bubbles. (This experiment is also ascribed to N. Marinesco and J.J. Trillat in 1933, which also credits them with independent discovery). This phenomenon is now referred to as multi-bubble sonoluminescence (MBSL). In 1989 a major experimental advance was introduced by

2. Sonoluminescence Experiment: Sound Into Light Detailed explanation of how I configured apparatus for the observation of sonoluminescence http://www.techmind.org/sl/

by W.A. Steer PhD Back to contents About... Contents Introduction Detailed Method Preparation of flask Electrical circuit ... Appendix Introduction Sonoluminescence was first observed in an ultrasonic water bath in 1934 by H. Frenzel and H. Schultes at the University of Cologne, an indirect result of wartime research in marine acoustic radar. This early work involved very strong ultrasonic fields and yielded clouds of unpredictable and non-synchronous flashing bubbles, now termed "multi-bubble sonoluminescence". Such a chaotic phenomenon did not lend itself to detailed scientific investigation. Study of sonoluminescence then made little progress until 1988, when D. Felipe Gaitan succeeded in trapping a stable sonoluminescing bubble at the centre of a flask energised at its acoustic resonance - single-bubble sonoluminescence (SBSL). However their interest soon waned, and the research was subsequently taken up by Dr S. Putterman et. al., at UCLA, California. Putterman pursued SBSL, published numerous papers, and established many of the characteristics which are now taken for granted. Once per acoustic cycle, coincident with a sharp decrease in bubble size, bluey-white light is emitted in a brief flash shorter than 100picoseconds in duration, with incredible regularity. Despite the results that have been obtained, the actual mechanism by which sound is converted to light remains elusive, not least because of the difficulty in measuring the conditions inside a pulsating bubble whose diameter is measured in micro-meters. It is generally agreed that the adiabatic compression of the bubble leads to very high interior temperatures, but beyond that, shocks, plasmas, ionisation and photo-recombination, Bremsstrahlung radiation, and even fusion are all hotly-debated possible explanations.

3. Sonoluminescence sonoluminescence. sonoluminescence is the initiation of bright flashes of light caused by imposing a loud, high frequency sound on a gas bubble contained within a liquid. http://www.halexandria.org/dward166.htm

Sonoluminescence Sonoluminescence is the initiation of bright flashes of light caused by imposing a loud, high frequency sound on a gas bubble contained within a liquid. According to one report [1] sound (typically 110 decibels at 25,000 Hertz) can cause a single air bubble in water to oscillate. As the pressure of the sound wave decreases (in the normal course of a single cycle of increasing and decreasing pressure), the bubble’s internal pressure causes it to increase in size to a maximum radius of about 70 micrometers. As the external pressure of the sound wave increases, the bubble begins to collapse. This collapse occurs partway through the rise in external pressure (and lasts about 15 x 10 seconds). The collapsing bubble walls shrink the bubble to less than a hundredth of its maximum size in about 15 microseconds. Then, as the bubble nears its minimum size, it emits a bright flash of light. The maximum duration of the flash of light is about 50 picoseconds (50 x 10 seconds). The bubble then oscillates about its minimum radius for a short time, before the cycle repeats itself. The temperature rise inside the bubble is estimated to rise to between 100,000 and a million degrees Kelvin, and the internal pressures to as much as 100 million times atmospheric pressure.

4. Kojima Group At Department Of Physics, Rutgers University In Single Bubble sonoluminescence(SBSL) a bubble of gas is trapped in water by an externally applied ultrasonic (f 15 kHz) field. http://www.physics.rutgers.edu/people/pdps/Kojima.html/SL website files/SLhome.h

Sonoluminescence star in a jar In Single Bubble Sonoluminescence(SBSL) a bubble of gas is trapped in water by an externally applied ultrasonic (f The acoustic field acts to expand and contract the bubble during each cycle. When the acoustic field is forced to be large enough, the collapse can become so violent that light (see the photograph below) is emitted! The main focus of our experiment concerns the nature of the light emitting mechanism which is not yet understood. We study the effects of mixing in different noble gases in the trapped bubble. In this photograph, the bubble is illuminated by a laser beam for Mie scattering measurement. A photograph of SBSL set up in a laboratory flask. Note the small blue sonoluminescing bubble near the center of the flask (which is illuminated slightly to show its contour). The dot is not a speck of dust on the flask nor on your monitor! Wires attached to the PZT transducers are also visible. The water is prepared by degassing the water for 30 minutes. The top surface of the water is visible. The resonant frequency is about 28 kHz. p hoto by Tamer Elkholy, Rutgers Undergraduate Research Fellow.

5. Sonoluminescence Homepage Maker of sonoluminescence kits. Provides instructions and suggested experiments. http://www.sonoluminescence.com/

Sonoluminescence apparatus ready to run. Email: sl100@sonoluminescence.com johnkord@yahoo.com

6. Sonoluminescence Homepage Maker of sonoluminescence kits. Provides instructions and suggested experiments. http://sonoluminescence.com/

Sonoluminescence apparatus ready to run. Email: sl100@sonoluminescence.com johnkord@yahoo.com

7. Sonoluminescence: When Sound Makes Light Under certain circumstances, sound waves can generate light. Find out which circumstances, explore the debate about how the phenomenon works, and learn how to make your own http://io9.com/5553121/sonoluminescence-when-sound-makes-light

8. Physics News Graphics: The Sonoluminescence Process Provides a four step theory on sonoluminescence. http://www.aip.org/png/html/sono1.htm

SEARCH AIP Search Physics News Graphics: The Sonoluminescence Process The Soluminescence Process. Sonoluminescence is the conversion of sound into light. Ultrasonic waves are aimed at an air bubble in a small water cylinder. The sound waves cause the bubble to oscillate furiously: (a) the bubble starts out at a size around 5 microns (millionths of a meter); (b) then it expands to a maximum size (not to scale) of about 50 microns. At this large size there is a near-vacuum inside the bubble because of the relatively few air molecules present. This low-pressure near-vacuum region is surrounded outside the bubble by a much higher-pressure region, which causes (c) a catastrophic collapse of the bubble to between 0.1 and 1 microns. During this compression phase a flash of light (d) emerges from the bubble. (By Malcolm Tarlton, American Institute of Physics). Link to Physics News Preview on the movie "Chain Reaction" Back to Physics News Graphics Main Page

9. Sonoluminescence sonoluminescence Science Environment A little tip Hello! You don't seem to be logged in so your ability to participate in this thread is limited. http://forums.canadiancontent.net/science-environment/85174-sonoluminescence.htm

Login vbmenu_register("login", 1); Canadian Content Entertainment Hot Topics News ... Themes sonoluminescence A little tip: Hello! You don't seem to be logged in so your ability to participate in this thread is limited. Please register for a free account to post replies and enjoy other forum features! We look forward to welcoming you into our community :) Free your mind Electoral Member Jul 5th, 2009 Quote: Taleyarkhan’s fusion breakthrough was based on a little-understood process called sonoluminescence. It’s a process that magically transforms sound waves into flashes of light, focusing the sound energy into a tiny flickering hot spot inside a bubble. It’s been called the star in a jar. The star in a jar effortlessly reaches temperatures of tens of thousands of degrees, hotter than the surface of the sun. Many scientists had wondered if the core of... Quote has been trimmed Could sonoluminescence be the Answer too mankind's Energy problem Fusion has been the goal of science for decade's ,When we see some UFO videos we see them hovering over water maybe they use 'Cold fusion" to power there craft.? "Cold fusion" has not been recreated here on earth,but when it does we will then be in an era of unprecedented free energy.

10. SONOLUMINESCENCE | Home Sound, light, dance improvisation by Todd Barton, Terry Longshore, Michael Maag, Suzee Grilley and Bruce Bayard. http://www.sonoluminescence.us/

11. Physics Physics Professor Seth J. Putterman 's remarkable demonstration of the obscure phenomenon known as sonoluminescence, or sound into light, came on a dare. http://www.research.ucla.edu/chal/html/physics.htm

document.write(""); document.write(""); hen it comes to scientific discoveries, researchers ascribe their inspirations to all kinds of things—"lifelong curiosity," "a happy accident," even "fate." Physics Professor Seth J. Putterman 's remarkable demonstration of the obscure phenomenon known as "sonoluminescence," or sound into light, came on a dare. Two German physicists first discovered that sound could actually be transformed into light more than 50 years ago, although they achieved sonoluminescence only erratically. Putterman, who specializes in continuum mechanics, especially acoustics, low-temperature physics and fluids, had never given the notion a thought until a colleague challenged him to explain how sound could be transformed into light. Putterman and one of his students took this as a dare and set about putting together their own makeshift sound-to-light system, using an oscilloscope, a sound generator and a home stereo amplifier. The result can be seen in Putterman's lab. sitting in the dark and staring at a water-filled flask, you will see a tiny, faint blue speck of light, a remarkable, almost magical sight. In some ways, it is reminiscent of the light shows of the '60s, in which strobe lights were coordinated to the pulsating music. But those sound waves, of course, were not being converted into light waves, which is what is happening inside Putterman's flask. As one of Putterman's students put it: "It's a star in a jar."

12. Physics News Graphics: Sonoluminescence And Medical Ultrasound Provides diagrams of what sonoluminescence may look like close up. http://www.aip.org/png/html/sonomed.htm

SEARCH AIP Search Physics News Graphics: Sonoluminescence and Medical Ultrasound Scientists have found evidence that medical ultrasound devices can produce sonoluminescence. This figure shows the calculated acoustic field of a device used in medicine to induce therapeutic lesions in tissue. This acoustic field generates intense sonoluminescence, although not so much at the focus, where one would expect it to be the most intense. (Figures courtesy of Lawrence Crum, University of Washington) Link to Physics News Preview, movie "Chain Reaction" Back to Physics News Graphics Main Page

13. Reprobus: Sonoluminescence reprobus sonoluminescence (SelfReleased - 1999) The (beautifully rendered) skeletal cover art may be more appropriate for the Hallowe'en season than it is for the bright and http://www.spiderbytes.com/ambientrance/rep-s.htm

reprobus: sonoluminescence reprobus: sonoluminescence Self-Released The (beautifully rendered) skeletal cover art may be more appropriate for the Hallowe'en season than it is for the bright and sprightly electrobeat sounds found in sonoluminescence . Self-confessed "electronic adrenaline junkie" reprobus has obviously poured his heart into these straightforward dance structures which are both retro and active. When you're finished at the AmbiEntrance, click on over to the Reprobus website to learn more. The bouncy beats and ratatat cymbals of love, to be the slave meet with assorted entities, from shimmering synth curtains, to e-piano notes, to tribal percussion to a load of house-y dance effects. Documenting the sounds that influenced Reprobus, very definite old school influences abound in electronic adrenaline junkie which also incorporates a certain amount of sweeping majesty into the track. mantra grooves more slowly, awash in light burbles, bassy rhythmic patterns and spaciously thudding beats. The dreamy oscillations and skyward synth veils of awakening are firmly pinned down by "classic" beat elements (the old robotic handclaps even). The cymbal-heavy, rapid-fire percussion of

14. Symposium On Sonoluminescence Provides abstracts for a symposium held at the University of Chicago in 1997. http://mrsec.uchicago.edu/meetings/sonoluminescence/

Symposium on Sonoluminescence September 12-13, 1997 University of Chicago Chicago, Illinois Time Schedule Abstracts Scope of the symposium: The Symposium on Sonoluminescence is planned as a forum for open and intensive discussion on the current experimental and theoretical state of sonoluminescence: Bubble dynamics and interface motion Mechanism of Light Emission Electronic and optical properties Sonochemistry Plasma and issues related to inertial confinement Possible Applications Directions for the Future Inquiry At the campus of the University of Chicago , the world's leading experts will have the opportunity to discuss, and share with young scientists, the new trends and results on this important interdisciplinary field of sonoluminescence. The meeting is sponsored by the NSF Materials Center at the University of Chicago. Scientific Programme The scientific programme will present an overview of the state of art on all aspects of sonoluminescence. The symposium, which is supposed to stimulate interactions between the participants, will consist of a number of invited lectures and shorter contributed presentations. In order to promote intense but relaxed, exchange of ideas, ample time for discussion will be provided for each talk.

15. Bubble Fusion - Wikipedia, The Free Encyclopedia Bubble fusion, also known as sonofusion, is the nontechnical name for a nuclear fusion reaction hypothesized to occur during a high-pressure version of sonoluminescence, an extreme http://en.wikipedia.org/wiki/Bubble_fusion

Bubble fusion From Wikipedia, the free encyclopedia Jump to: navigation search The neutrality of this article is disputed . Please see the discussion on the talk page . Please do not remove this message until the dispute is resolved. (May 2010) This article may require cleanup to meet Wikipedia's quality standards Please improve this article if you can. The talk page may contain suggestions. (May 2010) Bubble fusion , also known as sonofusion , is the non-technical name for a nuclear fusion reaction hypothesized to occur during a high-pressure version of sonoluminescence , an extreme form of acoustic cavitation . Officially, this reaction is termed acoustic inertial confinement fusion AICF ) (see ICF ) since the inertia of the collapsing bubble wall confines the energy, causing an extreme rise in temperature. The high temperatures that sonoluminescence can produce raise the possibility that it might be a means to achieve thermonuclear fusion. Left to right: apparition of bubble; slow expansion; quick and sudden contraction; possible fusion event.

16. Sonoluminescence: A Galaxy Of Nanostars Created In A Beaker NASA Glenn 2004 R T report article Skip navigation links. sonoluminescence A Galaxy of Nanostars Created in a Beaker http://www.grc.nasa.gov/WWW/RT/2004/RI/RIS-Jwrbanek2.html

Skip navigation links Sonoluminescence: A Galaxy of Nanostars Created in a Beaker As part of basic and applied research on advanced instrumentation technologies, the NASA Glenn Research Center is examining applications for sonoluminescence: ultrasonically produced glowing bubbles that are hotter than the Sun. In the last decade, those outside of the ultrasonic community have become interested in understanding sonoluminescence and in using some of its more interesting properties. First discovered in the 1930s as a byproduct of early work on sonar, the phenomenon is defined as the generation of light energy from sound waves. This glow, which was originally thought to be a form of static electricity, was found to be generated in flashes of much less than a billionth of a second that result when microscopic bubbles of air collapse. The temperature generated in the collapsing bubbles is at least 4 times that of the surface of the Sun. Theories for the cause of the glow from a collapsing bubble range from black-body radiation, plasma ionization, quantum vacuum fluctuations, or coherent optical lasing. Even as these theories are being explored, applications for the effect are taking shape, from fusion containment to thin-film deposition systems. Glenn has begun an in-house examination of sonoluminescence to develop instrumentation and measurement techniques that could ultimately use the phenomenon to enable safer, lighter, quieter, and more fuel efficient vehicles for aeronautics and space transportation and exploration.

17. Sonoluminescence In Space At Boston University Proposes to study sonoluminescence in space and in microgravity. http://www.bu.edu/paclab/sono/sono.html

Project overview: We have proposed a benchmark experiment that will probe the effects of gravity on Single Bubble Sonoluminescence (SBSL). SBSL has been the topic of many exciting research efforts in the past decade, yet there still remain several critical characteristics of the phenomenon to "decipher": (1) the light emission mechanism; (2) the disappearance of the bubble at some critical acoustic pressure; and (3) the appearance of quasiperiodic and chaotic oscillations in flash timing. Gravity, in the context of time-varying buoyancy , is implicated in these unexplained phenomena which have all been observed in 1g experiments. The project will include both numerical analysis' and KC-135 Parabolic Flight Experiments Further information: Preliminary analysis: "The effects of ambient acceleration on Bubble dynamics and single bubble sonoluminescence", by Sean C. Wyatt, R. Glynn Holt, and Ronald A. Roy. Results presented at the 136th Meeting of the Acoustical Society of America, Norfolk, VA, October 13, 1998. Project personnel: Glynn Holt Ronald Roy Charles Thomas Sean Wyatt Funding agency: NASA Acoustics in Bubbly Media Acoustic Time Reversal Lithotripsy Nonlinear Wave Propagation ... Sonoluminescence in Space

18. Sonoluminescence One of the key unsolved problems of physics relates to the motion of continuous media and can be formulated as follows Why is there a general tendency of http://www.physics.ucla.edu/Sonoluminescence/

One of the key unsolved problems of physics relates to the motion of continuous media and can be formulated as follows: Why is there a general tendency of the off-equilibrium motion of continuous media to be characterized by the formation of structures and the focusing of energy? Introduction Seth Putterman, PhD. UCLA Physics Department, Los Angeles CA 90025. Fax 310- 206- 5668 for assistance please contact Administrative Services Group asg@physics.ucla.edu

19. Access : Sonoluminescence: Cavitation Hots Up : Nature Nature is the international weekly journal of science a magazine style journal that publishes fulllength research papers in all disciplines of science, as well as News and Views http://nature.com/nature/journal/v434/n7029/full/434033a.html

Jump to main content Jump to navigation nature.com homepage ... Login Search this journal all of nature.com Advanced search Access To read this story in full you will need to login or make a payment (see right). nature.com Journal home Table of Contents News and Views Nature doi ; Published online 2 March 2005 Article Links Figures and tables See Also Editor's Summary Article Tools Send to a friend Export citation Export references Rights and permissions ... Bookmark in Connotea Search Pubmed for Detlef Lohse Open Innovation Challenges Improving Therapeutic Targeting of Bevacizumab Deadline: Dec 04 2010 Reward: $50,000 USD Derivatives of Racemic 2-Hydroxy-4-(methylthio)butanoic Acid and 2-Hydroxy-4-(methylthio)butanenitri Deadline: Nov 15 2010 Reward: $25,000 USD This Challenge seeks commercial applications for chemical derivatives More Challenges Powered by: nature jobs Research Coordinator I King Abdullah International Medical Research Center Riyadh , Saudi Arabia Gastroenterologist Johnston Memorial Hospital Abingdon, VA More science jobs Post a job for free Sonoluminescence: Cavitation hots up Detlef Lohse Top of page Abstract In 1917, Britain's Royal Navy had problems with bubble cavitation. This is a process in which tiny bubbles grow in size and then collapse as a result of pressure variations in the turbulent water around ships' propellers.

20. Welcome To Impulse Devices, Inc. | Impulse Devices, Inc. . Specializing In Physi Developing a Sonofusion power generator which harnesses the energy in sonoluminescence to provide the necessary temperatures for fusion reactions. http://www.impulsedevices.com/

About Company History and Timeline Executive Biographies Employment ... Home Welcome to Impulse Devices, Inc. Impulse Devices, Inc. is an applied physics research and development company specializing in physical acoustics, particularly acoustic cavitation of liquid media under high pressure. Contact Us Site by Spiral Studios

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