Sentences with phrase «of the acoustic wave»

The limiting factor is the maximum diameter of the object, which must correspond to half the wavelength of the acoustic wave being used.

The force of the acoustic wave pushes against the object and thus prevents it from falling due to gravity.

That matches the main rhythm of acoustic waves that echo through the sun's interior, forcing the gaseous surface to throb up and down.

The Biomedical Acoustics TC is concerned with the study of the interactions of acoustic waves with biological materials, including cells, tissues, organ systems and entire organisms.

They say: «It is shown that the rain formation leads to a change of the surface pressure after a short period of acoustic wave activity.

Not exact matches

The observatory will also measure patterns in the distribution of galaxies left by acoustic waves in the early universe.

Researchers have been pushing the capabilities of materials by carefully designing precise structures that exhibit abnormal properties that can control acoustic or optical waves.

Therefore, when an acoustic or mechanical wave contacts the material, it perturbs it, generating the unique properties that block sound waves and mechanical vibrations of certain frequencies from passing through.

The concentration of atoms in an intergalactic nebula is fantastically low even compared with the thin air of Mars, but sound can exist there too, provided something can spark a big enough acoustic wave.

Dr Usama Kadri, from Cardiff University's School of Mathematics, believes that lives could ultimately be saved by using acoustic - gravity waves (AGWs) against tsunamis that are triggered by earthquakes, landslides and other violent geological events.

Sound waves carrying a continuous supply of acoustic energy would neatly explain the bubbles» long - term existence — exactly what the new X-ray images seem to show.

Jostle a bunch of atoms so that they in turn jostle others, and you have created an acoustic wave — just a fancy name for sound.

However, this study has provided proof - of - concept that devastating tsunamis could be mitigated by using acoustic - gravity waves to redistribute the huge amounts of energy stored within the wave, potentially saving lives and billions of pounds worth of damage.»

Similar effects are used in acoustics: Different sounds are created by combining waves of different frequencies.

The physicists used acoustic waves that had the effect of altering time for the photons — the equivalent of putting Alice and Bob in those opposite - moving space shuttles.

Japanese engineers have developed a new system of acoustic levitation, using sound waves from four audio speakers to suspend solid objects in three dimensional space.

«Up until now, little attention has been paid to trying to mitigate tsunamis and the potential of acoustic - gravity waves remains largely unexplored.»

Researchers at MIT have now identified a less dramatic though far more pervasive source of acoustic - gravity waves: surface ocean waves, such as those that can be seen from a beach or the deck of a boat.

Acoustic - gravity waves are very long sound waves that cut through the deep ocean at the speed of sound.

The newly derived wave equation allowed Kadri to study the behavior of both acoustic and gravity waves.

Usama Kadri, a visiting assistant professor and a research affiliate in MIT's Department of Mathematics, says the team's results establish a concrete and detailed relationship between surface - gravity waves and acoustic - gravity waves, which, until now, scientists had suspected did not exist.

Situated at a relatively safe distance 30 meters away from the smokers, an acoustic device called COVIS (Cabled Observatory Vent Imaging Sonar) emits sound waves that bounce off of the particles belching from the vents.

The size of the acoustic scale at 13.7996 billion years ago has been exquisitely determined from observations of the cosmic microwave background from the light emitted when the pressure waves became frozen.

By experimenting with different forms of acoustic signals, he found that a large pulse followed by a small one could reflect sound waves in such a way as to allow fish and bubbles to be easily distinguished.

They employed a broad spectrum of methods and other measurement data, including Baryonic Acoustic Oscillations, which are density waves from the early universe, local measurements of the Hubble constant, which specifies the universe's rate of expansion at the present day, as well as a certain group of supernovae or exploding stars.

The new system, described in the March 5 edition of the journal Nature Communications, combines photons and phonons — electromagnetic energy and sound energy — to conduct sophisticated signal processing tasks by harnessing the properties of lower - velocity acoustic waves.

The pair are corresponding authors on a paper appearing online on Feb 2 in the journal Small titled «Precise Manipulation and Patterning of Protein Crystals for Macromolecular Crystallography Using Surface Acoustic Waves.»

Our new device, which enables the precise manipulation and patterning of protein crystals using surface acoustic waves, is a transformative technology for structural biologists,» said Jarrod French, an assistant professor of biochemistry and cell biology at Stony Brook University.

But the actual trick used by Daniele Foresti, former doctoral student now a postdoctoral researcher at the Laboratory of Thermodynamics in Emerging Technologies, is based on acoustic waves.

Alessandro Spadoni and Chiara Daraio of the California Institute of Technology have now developed a new type of acoustic lens to make sound waves even more powerful.

Until now, however, no one had been successful in controlling the motion of objects riding on acoustic waves in mid-air.

He varied the acoustic waves from module to module in order to transfer particles or droplets of liquid from one module to the next.

In acoustics interference of two waves with slightly different frequencies creates a beat, or a periodic variation in volume.

It overcomes a significant barrier in the field by enabling the manipulation and patterning of micro - or nanometer sized protein crystals using low power, biocompatible acoustic waves.»

A device for precisely positioning small objects using acoustic waves has now been used to position fragile protein crystals a few micrometers or less in size in the path of a crystallography X-ray beam.

The older idea that acoustic waves flowing out of lower levels heats the corona was abandoned in the 1970s, when the Orbiting Solar Observatory 8 spacecraft did not see such waves in the chromosphere, the layer just above the photosphere (the apparent «surface» of the sun in visible light).

Acoustic waves rippling at microwave frequencies have wavelengths similar to those of optical photons.

In a pair of recently published papers, a team led by Berkeley Lab researcher Jonathan Ajo - Franklin announced they had successfully combined a technology called «distributed acoustic sensing,» which measures seismic waves using fiber - optic cables, with novel processing techniques to allow reliable seismic monitoring, achieving results comparable to what conventional seismometers can measure.

Last year Asier Marzo, then a doctoral student at the Public University of Navarre, helped develop the first single - sided acoustic tractor beam — that is, the first realization of trapping and pulling an object using sound waves from only one direction.

In today's «internet of things,» devices connect primarily over short ranges at high speeds, an environment in which surface acoustic wave (SAW) devices have shown promise for years, resulting in the shrinking size of your smartphone.

Acoustic waves are the jiggling of matter, and they travel at the much slower speed of sound — in a solid, typically a few thousand meters per second.

The trick is, of course, to quickly turn the incoming EM waves into acoustic waves.

«This study shows how we can expand the use of seismic data by looking at the acoustic waves from volcanic explosions that are recorded on seismometers,» explained Fee.

«These excitations manifest themselves in different ways in different systems, but the type of responses we observed for pure metallic materials are primarily standing surface acoustic waves.»

The sound used in the experiment has the form of surface acoustic waves (SAWs) which appear as ripples on the surface of a solid.

«Methods of controlling and manipulating subwavelength acoustic and elastic waves have proven elusive and difficult; however, the potential applications — once the methods are refined — are tremendous,» said Guoliang Huang, associate professor of mechanical and aerospace engineering in the College of Engineering at MU.

The model also generated acoustic data; an interesting revelation of the simulation was that tsunamigenic surface - breaking ruptures, like the 2011 earthquake, produce higher amplitude ocean acoustic waves than those that do not.

The sound, known as a surface acoustic wave (SAW) is picked up on the left by a «microphone» composed of interlaced metal fingers.

The second phase was the actual experiment in which data pulses were stored (as acoustic waves in an optical fiber) and retrieved after a certain period of time.

Mirkin's team used the technique, reported online this month in Nature Communications, to make working electrical devices including inductors, capacitors, and surface acoustic wave transducers, and even drew a 9 - millimeter - square map of the world.