The researchers wanted to determine if the fish could sense
sound pressure waves underwater, so they filled a long metal tube with water and placed a loudspeaker at one end.
Not exact matches
On the other hand, the fact that water is slightly compressible is what allows
pressure waves, such as
sound, to travel through, though this property has almost no effect on surface
waves.
Waves of light or
sound fired at an object tend to bounce off its surface like raindrops on an umbrella, collectively exerting a subtle nudge called radiation
pressure that pushes the object away.
In the middle ear,
pressure oscillations in the air are transferred via the tympanic membrane (eardrum) and one or three small bones (ossicles) to fluid movements in the inner ear, where the conversion of
sound waves to nerve signals takes place.
There are four types of blast trauma injury: 1) primary injury caused directly by the
pressure wave, which can travel through tissue at velocities close to that of
sound in water, 2) secondary injury caused by objects put in motion by the blast, 3) tertiary injury caused by an individual thrown into motion by the blast and hitting surrounding objects, and 4) quaternary injury caused by burns, explosion - related injuries, illnesses and diseases not attributed to the other three blast trauma types.
This resulted in an ultrasonic
pressure wave that can be detected as
sound to give information about the cell's size and shape.
A
sound wave is a
pressure wave, so produces a force that can potentially counteract gravity.
Many of these technologies, including the marine vibrator — which conducts surveys using a steady pulse of low -
pressure sound waves over a longer period — are «not that far away from industrial scale use,» Nowacek said.
When these laser pulses hit a blood vessel, for example, they cause a small increase in
pressure that moves through the body like a
sound wave and can be measured on the skin.
I built a work that exploits the phenomenon of sonoluminescence, in which extremely high
pressure sound waves in liquids create tiny sources of electromagnetic energy.
Pressure from
sound waves flexes and rotates the beam to create an electric signal that's processed to determine
sound direction — the same way O. ochracea does.
That disturbance produces
waves of high and low
pressure traveling at about 760 miles per hour, which we experience as
sound.
The NOAA team has set up several arrays of sensors, spaced hundreds of miles apart, that register slight variations in air
pressure — a sign of a lengthy
sound wave passing by.
If the
sound is loud enough and at the right frequency, the
pressure at the trough of the
wave will be so low that the fluid will boil, producing microscopic bubbles.
When the high
pressure front at the crest of the
sound wave slams into these bubbles, they implode, and shock
waves focus the energy of the implosion to a central region of atomic dimensions.
The change in
pressure as the object outruns all the
pressure and
sound waves in front of it is heard on the ground as an explosion, or sonic boom.
Because
sound waves have
pressure, they can push very small objects, so a cell or nanoparticle will move with the
sound wave until it reaches the location where there is no longer movement.
When opposing devices send out surface acoustic
waves, they set up a grid of nodes where the
sound pressure cancels out.
The pulses heated the nanoparticles, which disturbed the water around them, generating
pressure, or
sound,
waves.
Sound waves and sonic booms are examples of
pressure waves.
This is only briefly before the air expands due to latent heating to equalize the
pressure (Pielke commented on these fast adjustment processes due to
sound waves).
«Even the disturbances in the form of
sound waves such as
pressure waves in gases, liquids and solids may be harvested for powering nano - and micro devices of the future if these materials are processed and manufactured appropriately for this purpose,» Cagin said.