Stephen Caesar's Articles Known as sonoluminescence, this conversion of sound into light occurs during the rapid and violent contraction of the bubble as it oscillates in step with http://www.creationism.org/caesar/sonoluminescence.htm
Extractions: (This article may be copied for educational purposes only.) "Light before Stars?" Genesis 1:3 states, "And God said, Let there be light: and there was light." Critics have made the claim that, since stars were not created until verse 16, verse 3 must be in error. After all, how could light come into existence if stars - the very things that create light - had not yet been created? A closer examination of verse 3, combined with very recent scientific discoveries, may well provide the answer. According to a careful reading of verse 3, light was created as the result of God's voice: "And God said, Let there be light." Modern science has demonstrated that light can be produced purely from sound, and not exclusively from light-giving sources such as stars. Physicists Keith Weninger, Seth J. Putterman, and Bradley P. Barber of the University of California at Los Angeles performed a remarkable experiment that has confirmed the existence of sonoluminescence - light that is created from sound.
IngentaConnect Content Not Found sonoluminescence (SL) is the name given to the light emitted when a liquid is cavitated in a particular (rather violent) manner. http://www.ingentaconnect.com/content/tandf/tadp/1984/00000033/00000006/art00002
Extractions: For Researchers For Librarians Unfortunately we are unable to locate the content you are looking for. It is possible that the publisher, journal or issue is no longer hosted at Ingenta, or that the link that brought you to this page is incorrect. We have located the journal: Advances In Physics . To view content for this journal, click here Please use the browse or search features to find the content you are looking for. Browse Search
Chemical Communications Articles sonoluminescence quenching by organic acids in aqueous solution pH and frequency effects. Gareth J Price, Muthupandian Ashokkumar, Timothy D Cowan, http://xlink.rsc.org/?DOI=b201795d
6.4 What Is Sonoluminescence ? Generally sonoluminescence is light emission from small cavitating bubbles of air or other gas in water or other fluids, produced when the fluid is acted http://stason.org/TULARC/physics/acoustics-faq/6-4-What-is-sonoluminescence.html
Extractions: Hosted by This article is from the Acoustics FAQ , by Andrew Silverman with numerous contributions by others. In the early 1930s Frenzel and Schultes discovered that photographic plates became "fogged" when submerged in water exposed to high frequency sound. More recent experiments have succeeded in suspending a single luminous pulsating bubble in a standing wave acoustic field, visible in an undarkened room. Generally sonoluminescence is light emission from small cavitating bubbles of air or other gas in water or other fluids, produced when the fluid is acted upon by intense high frequency sound waves. The mechanism is not completely understood, but very high pressures and temperatures are thought to be produced at the centre of the collapsing bubbles. See "Science" 14 October 1994 page 233, "Scientific American" (International Edition) February 1995 Page 32 or "Physics Today" September 1994 Page 22, all quite readable articles.
The Particle: Sonoluminescence sonoluminescence sonoluminescence (SL) was first observed in an ultrasonic water bath in 1934 by H. Frenzel and H. Schultes at the University of Cologne, http://www.blazelabs.com/f-p-sono.asp
Welcome To IEEE Xplore 2.0 Discussions On Sonoluminescence 5, V.Q. Vuong and A.J. Szeri, sonoluminescence and Diffusive Transport, 8, P.H. Roberts and C.C. Wu, The ShockWave Theory of sonoluminescence, http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1463129
Dislocation Nonlinear Dynamics And Crystal Sonoluminescence Introduction The problems of dislocation dynamics, especially nonlinear one, and defects in crystals are still of high interest Among them there is a http://citeseer.ist.psu.edu/362567.html
Research Uncovers Possible New Explanation For Sonoluminescence An Ohio State University physicist may have uncovered the atomic process behind sonoluminescence, an effect in which ultrasonic waves break against the http://www.sciencedaily.com/releases/1998/06/980622061213.htm
Extractions: Share Blog Cite Print Email Bookmark ScienceDaily (Jun. 22, 1998) See also: This new explanation may assist the emerging field of sonochemistry, where scientists use ultrasound to accelerate and enhance chemical reactions for instance, in the creation of new materials. It may also hold applications in the field of optics. Sanjay Khare, a postdoctoral researcher in physics at Ohio State, said that even though scientists know a great deal about the motions of bubbles and ultrasonic waves, nobody knows exactly how sonoluminescence works on an atomic level. Khare and Pritiraj Mohanty, a graduate student of physics at the University of Maryland, College Park, found a possible clue to the atomic source of sonoluminescence when they considered that the ultrasound-stimulated bubbles emit light in very short pulses, as short as 10 parts in a trillionth of a second. Khare and Mohanty hit upon the idea that if the many atoms inside the bubble decayed at the same time, then the light waves would emerge in step with each other and at the same frequency. That would account for the short pulses. In a paper that appeared in a recent issue of the journal Physical Review Letters, the researchers proposed that stimulated, or excited, atoms decaying in unison could emit the kind of light seen in sonoluminescence.
A Magnetic Field Diagnostic For Sonoluminescence This study is motivated by the extraordinary process of single bubble sonoluminescence (SBSL), where an acoustically driven spherical shock is thought to http://flux.aps.org/meetings/YR9596/BAPSMAR96/abs/S2750013.html
Extractions: Room 242, America's Center Tom Chou (LASSP, Cornell University), Eric G. Blackman (Instutute of Astronomy, Cambridge, ENGLAND) This study is motivated by the extraordinary process of single bubble sonoluminescence (SBSL), where an acoustically driven spherical shock is thought to power the emitted radiation. Our theory proposes new experiments using an external magnetic field which can induce anisotropies in both the shock propagation and radiation pattern. The effects will depend on the temperature, conductivity, and size of the radiating region. Our predictions suggest that such a laboratory experiment could serve as an important diagnostic in placing bounds on these parameters and understanding the physics of sonoluminescence. Part M of program listing
SONOLUMINESCENCE AT THE ULL sonoluminescence is the emission of light produced from small air bubbles, when the latter are exposed to an intense acoustic field. http://webpages.ull.es/users/mmateo/SONO/SONOEN.htm
Extractions: SONOLUMINESCENCE. Sonoluminescence is the emission of light produced from small air bubbles, when the latter are exposed to an intense acoustic field. Although sonoluminescence is a rather old phenomenon, a renewed interest on this subject has been triggered by recent papers suggesting that light are produced by the exceedingly high temperature achieved within the gas during the collapsing of the bubble. The relevance of these findings did not pass unnoticed, as it showed that the acoustic energy can be effectively transferred to the gas within the bubble causing the temperatures to rise, as much as that in the sun or the stars. SONOLUMINESCENCE EXPERIMENT AT ULL Motivated by these findings, we decided to build a similar experiment in our Laboratory of Electrónica Básica in the Facultad de Física of ULL. To this end, we contacted Mr. Andrew Steer, at Imperial College, University of London, who, so generously, provided with all required information to set up our own experiment. The experiment is based on an acoustic resonator, made out a 100 ml round flask. The sound is delivered to the flask by means of a couple of piezos, which are glued at opposite positions on the equator of the flask. A little piezo, glued down in the bottom, is used as a microphone to sense the acoustic level in the resonator. See figure at the right.
CAT.INIST The phenomenon of sonoluminescence still presents some unsolved aspects. RecentlyY. T. Didenko, K. Suslick, Molecular Emission during Single Bubble http://cat.inist.fr/?aModele=afficheN&cpsidt=17542929
Extractions: Login or Create Free Account Search Go to Advanced Search Home Search Patents Data Services ... Help Title: Method for generating photons by sonoluminescence Document Type and Number: United States Patent 7002169 Link to this page: http://www.freepatentsonline.com/7002169.html Abstract: A method of generating photons by sonoluminescence, from a gas bubble trapped in a liquid reservoir ( ) by a standing ultrasound wave. An ultrasound impulse emitted by high-frequency transducers (T âT ) is superposed on the standing wave, the high-frequency transducers being pre-focused onto the gas bubble and pre-synchronized with the light emissions from the gas bubble during an initial training stage in which said focusing and said synchronization are optimized. Representative Image: Inventors: Thomas, Jean-louis (Villejuif, FR)
Extractions: Dept. of Med. Phys., Addenbrooke's Hospital, Cambridge, UK Abstract. For pt.1 see ibid., vol.33, no.11, p.1239-48 (1988). Sonoluminescence, produced when a therapeutic ultrasound generator operating at 1 MHz was used to insonate a tank of water, was detected using a photomultiplier tube and analysed using pulse height analysis. Spectra of the number of counter per second were obtained for the complete range of observed pulse heights, under exposure conditions similar to those used in clinical practice. Water containing different concentrations of dissolved gases and an agar solution were investigated during the course of the experiments. Measurements were made to establish a threshold for sonoluminescence and the total sonoluminescent light output from tap water insonated with continuous wave ultrasound at 1 W cm was estimated. The density of free radicals produced under these conditions was also estimated. The effects of temperature and duty cycle were investigated over the range 22-45 degrees C and pulsed regimens produced more sonoluminescence than continuous wave ultrasound over a significant part of the pulse height spectrum.
Extractions: login or sign up now Sign Up Learn More Login ... clipped by pokkets 11-11-2007 12:16 AM 397 views U.S. Gives Nuclear Power A Second ... Orion Nebula - another fantastic p... M i l k y S e a s f r o m S ... Ah, Love! ... 6 cities that shortened yellow lig... Human-cow hybrid embryos made in l... UN climate panel 'downplayed' tech... Resistant staph kills healthy popl... Embed This Clip In Your Site... tags: sonoluminescence light frequency noble ... pokkets says: It's amazing what can be done using the right frequency Add a Comment Login to Comment. Not a member yet? Sign up visit the Top Clips page View the Top Clips from November 11, 2007
Synchronous Picosecond Sonoluminescence If acoustic cavitation is produced in a liquid, the implosion of cavities can heat the internal contents of the bubble to incandescent temperatures. http://stinet.dtic.mil/oai/oai?verb=getRecord&metadataPrefix=html&identifier=ADA
Extractions: PDF - Requires Adobe Acrobat Reader or other PDF viewer. ( 180Kb ) Sonoluminescence (SL), the phenomenon of light emission from nonlinear motion of a gas bubble, involves an extreme degree of energy focusing. The conditions within the bubble during the last stages of the nearly catastrophic implosion are thought to parallel the efforts aimed at developing inertial confinement fusion. A limited review on the topic of SL and its possible connection to bubble nuclear fusion is presented here. The emphasis is on looking for a link between the various forms of SL observed and the severity of bubble collapse or implosion. A simple energy analysis is also presented to enable the search for an appropriate parameter space and an experimental technique for achieving energy densities required for triggering fusion reactions within the bubble. Item Type: Journal Article Department/Centre: Division of Mechanical Sciences Mechanical Engineering ID Code: Deposited By: Vaidya, Nagaraj