Sound-waves Sentence Examples
One of the electrodes was attached to a sounding board capable of being vibrated by sound-waves and the other was held either by springs or weights in delicate contact with it.
When the sounding board was spoken to or subjected to sound-waves, the mechanical resistance of the loose electrode, due to its weight, or the spring, or both, served to vary the pressure at the contact, and this gave to the current a form corresponding to the sound-waves, and it was therefore capable of being used as a speaking-telephone transmitter.'
The pipes composing it were stopped at one end, so that the sound waves had to travel twice the length of the pipe, giving out a note nearly an octave lower than that produced by an open pipe of equal length.
The breath directed horizontally across the open end, impinged against the sharp inner edge of the pipes, creating the regular series of pulses which generate the sound waves within the tubes.
As sound arises in general from vibrating bodies, as it takes time to travel, and as the medium which carries it does not on the whole travel forward, but subsides into its original position when the sound has passed, we are forced to conclude that the disturbance is of the wave kind, We can at once gather some idea of the nature of sound waves in air by considering how they are produced by a bell.Advertisement
We may obtain an excellent representation of the motion of the layers of air in a train of sound waves by means of a device due to Crova and known as " Crova's disk."
In liquids sound waves are longitudinal as they are in air.
In ordinary sound waves the displacement is very minute, perhaps of the order 105 cm., so that we multiply it perhaps by ioo,000 in forming the displacement curve.
Then do= I do dx The Characteristics of Sound Waves Corresponding to Loudness, Pitch and Quality.
Methods of measuring the amplitude in sound waves in air have been devised and will be described later.Advertisement
In ordinary sound-waves the effect of the particle velocity in affecting the velocity of transmission must be very small.
The amount radiated out in the form of sound waves is deduced, and hence the energy of the stream at any distance is known.
When two trains of sound waves travel through the same medium, each particle of the air, being simultaneously affected by the disturbances due to the different waves, moves in a different manner than it would if only acted on by each wave singly.
If sound waves originate at the seat of auroral displays they seem hardly likely to be audible on the earth, unless the aurora comes very low and great stillness prevails.
The pitch of a steam-whistle quite obviously rises and falls as the engine to which it is attached approaches and recedes from a stationary auditor; and light pulses are modified like sound-waves by velocity in the line of sight.Advertisement
She uses a sonar system that emits sound waves.
Ultrasound Ultrasound scans are a way of producing pictures of inside the body using sound waves.
The reflected sound waves are used to create an image on a screen, showing exactly what 's going on inside the body.
Blocking out these sound waves is the purpose of a soundproof room.
Ultrasound An ultrasound scanner uses sound waves to produce images of soft tissue on a screen.Advertisement
Since the body is comprised mostly of water, it conducts these sound waves easily.
The sound waves can encourage relaxation, healing, and balance within the body.
Well, here are some basics on the overall room design without getting too caught up in the technical jargon of acoustics and how sound waves travel.
The sensor is a passive sensor because it does not detect radio or sound waves.
Ultrasonic jewelry cleaners use sound waves that vibrate through the water to remove particles and dirt from jewelry pieces.Advertisement
During the echo, an ultrasound transducer (hand-held wand placed on the skin of the chest) emits high-frequency sound waves to produce pictures of the heart's valves and chambers.
In a transcranial Doppler ultrasound, sound waves are used to measure blood flow in the vessels of the brain.
In a neurosonogram, ultra high frequency sound waves are used to analyze blood flow and possible blockages in the blood vessels in or leading to the brain.
The sound waves are converted into an image that can be displayed on a monitor.
Ultrasonography-A medical test in which sound waves are directed against internal structures in the body.
As sound waves bounce off the internal structure, they create an image on a video screen.
A Doppler echo uses sound waves to measure blood flow.
The transducer generates high-frequency sound waves through the tissues.
These sound waves reflect off blood cells moving within the blood vessels, allowing the radiologist to calculate their speed.
The sound waves are measured, recorded, and displayed on a computer screen.
The eardrum vibrates when sound waves travel into the ear canal and strike it.
The ultrasound produces sound waves that are reflected back from the body structures of the fetus, producing a picture that can be seen on a video screen.
External monitoring of the fetus is accomplished by means of a transducer that emits continuous sound waves (ultrasound).
When the transducer is placed correctly on the maternal abdomen, the sound waves bounce off the fetal heart and are picked up by the electronic monitor.
Another cause of conductive hearing impairment is an excessive build-up of earwax that prevents sound waves from reaching the eardrum.
Outer ear-Outer visible portion of the ear that collects and directs sound waves toward the tympanic membrane by way of a canal which extends inward through the temporal bone.
There is no evidence that sound waves cause any harm to the mother or the baby.
Ultrasound is a device that records sound waves as they bounce off the developing fetus and create an image that is projected onto a large computer screen.
The technician may rub some gel on the woman's fundus (lower abdomen), which helps the hand-held device pick up sound waves.
One of these panels is actually an ultrasound device that sends and receives sound waves to detect fetal heart rate.
They converted sound waves in the room into a physical form that could later be used to reproduce those same sound waves.
Later, the world of electronics allowed the conversion of sound waves from a microphone into "electromagnetic fluctuation" that gets imprinted into magnetic tape or, in the case of today's digital recorders, a digital memory chip.
These facts suggest that the phenomenon is somehow related to electronic systems or recording media and not actual sound waves.